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Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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1

Cement Additives from Fly Ash Opportunity  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Device and Method for Separating Minerals, Carbon and Device and Method for Separating Minerals, Carbon and Cement Additives from Fly Ash Opportunity Research is currently active on the patented technology "Device and Method for Separating Minerals, Carbon, and Cement Additives from Fly Ash." The technology is available for licensing and/or further collaborative research from the U.S. Depart- ment of Energy's National Energy Technology Laboratory (NETL). Overview This invention includes a device, along with a method, to recover and use fly ash as a source of high purity carbon, ash, and minerals. The device and associated method can isolate components of the fly ash based on size and electrical charge. By improving beneficiation and usage methods, fly ash can be transformed from a waste material to a valuable by-product. Recent shifts to low nitrogen

2

E-Print Network 3.0 - ash blended cement Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CLSM mixture utilized... . CHARACTERIZATION AND APPLICATION OF CLASS F FLY ASH AND CLEAN-COAL ASH FOR CEMENT-BASED MATERIALS 2 The major... investigation. Two additional ash ......

3

Transcending Portland Cement with 100 percent fly ash concrete  

SciTech Connect (OSTI)

The use of concrete, made with 100% fly ash and no Portland cement, in buildings at the Transportation Institute in Bozeman, MT, USA, is described. 3 refs., 7 figs.

Cross, D.; Akin, M.; Stephens, J.; Cuelh, E. [Montana State University, MT (United States)

2009-07-01T23:59:59.000Z

4

Soil stabilization and pavement recycling with self-cementing coal fly ash  

SciTech Connect (OSTI)

This manual provides design information for self-cementing coal fly ash as the sole stabilizing agent for a wide range of engineering applications. As in any process, the application of sound engineering practices, appropriate testing, and evaluation of fly ash quality and characteristics will lend themselves to successful projects using the guidelines in this manual. Topics discussed include: self-cementing coal fly ash characteristics; laboratory mix design; stabilization of clay soils; stabilisation of granular materials; construction considerations; high sulfate ash; environmental considerations for fly ash stabilization; design considerations; state specification/guidelines/standards; and a sample of a typical stabilization specification.

NONE

2008-01-15T23:59:59.000Z

5

Cement distribution in a carbonate reservoir: recognition of a palaeo oil–water contact and its relationship to reservoir quality in the Humbly Grove field, onshore, UK  

Science Journals Connector (OSTI)

The distribution of mineral cements, total porosity, microporosity and permeability have been determined for the Humbly Grove oolitic carbonate reservoir (Middle Jurassic Great Oolite Formation, Weald Basin, onshore UK) using a combination of optical petrography, electron microscopy, fluid inclusion analysis, quantitative XRD, wireline data analysis and core analysis data. Grainstone reservoir facies have porosities ranging between 5 and 24%, but are mostly between 11 and 24%. Permeabilities vary from Jurassic reservoirs of the Weald Basin.

Emma C Heasley; Richard H Worden; James P Hendry

2000-01-01T23:59:59.000Z

6

Influence of curing temperature on cement hydration and mechanical strength development of fly ash mortars  

SciTech Connect (OSTI)

The influence of fly ash and curing temperature on cement hydration and compressive strength development of mortars was investigated. Test parameters included type of fly ash (two different Class F fly ashes were tested), the level of cement replacement (10, 20 and 30% by mass), and curing temperature (20 C and 40 C). The mortar physical and microstructural properties were determined by means of thermal analyses, compressive strength measurements and SEM observations. Test results confirm that fly ash tends to increase significantly the rate of cement hydration at early age. Data also demonstrate that an elevation of the curing temperature reduces the long-term compressive strength of the reference mortar mixture. In contrast, an increase of the curing temperature seems to have no detrimental effect on the long-term compressive strength of the fly ash mixtures.

Maltais, Y.; Marchand, J. [Univ. Laval, Quebec (Canada). Centre de Recherche Interuniversitaire sur le Beton] [Univ. Laval, Quebec (Canada). Centre de Recherche Interuniversitaire sur le Beton

1997-07-01T23:59:59.000Z

7

Production of cements from Illinois coal ash. Technical report, September 1, 1995--November 30, 1995  

SciTech Connect (OSTI)

The objective of this program is to convert Illinois coal combustion residues, such as fly ash, bottom ash, and boiler slag, into novel cementitious materials for use in the construction industry. Currently only about 30% of the 5 million tons of these coal combustion residues generated in Illinois each year are utilized, mainly as aggregate. These residues are composed largely Of SiO{sub 2}, Al{sub 2}O{sub 3}, Fe{sub 2}O{sub 3}, MgO, and CaO, which are also the major components of cement. The process being developed in this program will use the residues directly in the manufacture of cement products. Therefore, a much larger amount of residues can be utilized. To achieve the above objective, in the first phase (current year) samples of coal combustion residues will be blended and mixed, as needed, with a lime or cement kiln dust (CKD) to adjust the CaO composition. Six mixtures will be melted in a laboratory-scale furnace at CTL. The resulting products will then be tested for cementitious properties. Two preliminary blends have been tested. One blend used fly ash with limestone, while the other used fly ash with CKD. Each blend was melted and then quenched, and the resulting product samples were ground to a specific surface area similar to portland cement. Cementitious properties of these product samples were evaluated by compression testing of 1-inch cube specimens. The specimens were formed out of cement paste where a certain percentage of the cement paste is displaced by one of the sample products. The specimens were cured for 24 hours at 55{degrees}C and 100% relative humidity. The specimens made with the product samples obtained 84 and 89% of the strength of a pure portland cement control cube. For comparison, similar (pozzolanic) materials in standard concrete practice are required to have a compressive strength of at least 75% of that of the control.

Wagner, J.C. [Institute of Gas Technology, Chicago, IL (United States); Bhatty, J.I.; Mishulovich, A. [Construction Technology Labs., Inc., Washington, DC (United States)

1995-12-31T23:59:59.000Z

8

Engineering properties of miniature cement - fly ash compacts prepared by high pressure compaction  

E-Print Network [OSTI]

ENGINEERING PROPERTIES OF MINIATURE CEMENT - FLY ASH COMPACTS PREPARED BY HIGH PRESSURE COMPACTION E NGIRPR OT SFMMAFU AEU C-ALEYY HDOBPvvIi va vGI ge(iD(vI oannItI au NId(R E)L xrP1IeRPvT 9(evP(n uDnuPnnBIrv au vGI eI0DPeIBIrvR uae vGI i...IteII au LEHNFA -M Ho2FYoF EDtDRv 3456 L(7ae HDO7I8v? oP1Pn FrtPrIIePrt ENGINEERING PROPERTIES OF MINIATURE CEMENT - FLY ASH COMPACTS PREPARED BY HIGH PRESSURE COMPACTION E NGIRPR OT SFMMAFU AEU C-ALEYY E99ea1Ii (R va RvTnI (ri 8arvIrv OT? LP...

Bormann, Jeffrey Ray

1985-01-01T23:59:59.000Z

9

Production of cements from Illinois coal ash. Final technical report, September 1, 1995--August 31, 1996  

SciTech Connect (OSTI)

The objective of this program is to convert Illinois coal combustion residues, such as fly ash, bottom ash, and boiler slag, into novel cementitious materials for use in the construction industry. These residues are composed largely of SiO{sub 2}, Al{sub 2}O{sub 3}, Fe{sub 2}O{sub 3}, MgO, and CaO, which are also the major components of cement. Since the residues are used as an integral component of the cement and not just as additives to concrete, larger amounts of the residues can be utilized. The process uses submerged combustion to melt blends of coal combustion residues with lime, clay, and/or sand. The submerged combustion melter utilizes natural gas-oxidant firing directly into a molten bath to provide efficient melting of mineral-like materials. Use of this melter for cement production has many advantages over rotary kilns including very little, if any, grinding of the feed material, very low emissions, and compact size. During the first year of the program, samples of coal combustion residues were blended and mixed, as needed; with lime, clay, and/or sand to adjust the composition. Six mixtures, three with fly ash and three with bottom ash, were melted in a laboratory-scale furnace. The resultant products were used in mortar cubes and bars which were subjected to ASTM standard tests of cementitious properties. In the hydraulic activity test, mortar cubes were found to have a strength comparable to standard mortar cements. In the compressive strength test, mortar cubes were found to have strengths that exceeded ASTM blended cement performance specifications. In the ASR expansion test, mortar bars were subjected to alkali-silica reaction-induced expansion, which is a problem for siliceous aggregate-based concretes that are exposed to moisture. The mortar bars made with the products inhibited 85 to 97% of this expansion. These results show that residue-based products have an excellent potential as ASR-preventing additions in concretes.

Wagner, J.C.; Bhatty, J.L.; Mishulovich, A.

1997-05-01T23:59:59.000Z

10

Durability and microstructure characteristics of alkali activated coal bottom ash geopolymer cement  

Science Journals Connector (OSTI)

Abstract Many studies have focused on the production of mortar and concrete without cement. This is referred to as geopolymer mortar or concrete. This paper discusses the effect of alkali oxides (Na2O = 8, 12, 16 wt.% and SiO2 = 0, 4, 8, 12 wt.%) on compressive strength, microstructure and durability of circulating fluidized bed combustion coal bottom ash (CBA) geopolymer cements (GC). Durability and morphology tests were carried out through heating and freezing tests. The highest compressive strength (25.83 MPa) was achieved at Na2O wt.% = 12, SiO2 wt.% = 8. The optimum atomic ratios for a compact microstructure were obtained for Si/Al between 3.5 and 4 and Si/Na close to 0.5. Following the sintering, the main reaction products (N-A-S-H gel) became more amorphous at 800 °C, attaining Si/Al and Si/Na atomic ratios of 4.54 and 0.98. Sodium carbonate formation was observed at 800 °C. Also, the strength loss of GC was only 6.77% after 30 freeze-thaw cycles. The results show that durable geopolymer concrete without cement can be produced by using waste bottom coal ash. Therefore, the production of geopolymer concrete has a high environmental impact, decreasing waste material in addition to global warming.

?lker Bekir Topçu; Mehmet U?ur Toprak; Tayfun Uyguno?lu

2014-01-01T23:59:59.000Z

11

Immittance spectra for Portland cement/fly ash-based binders during early hydration  

SciTech Connect (OSTI)

A range of immittance formalisms is exploited to understand the nature of conduction and polarization within Portland cement-based binders over the frequency range 1 Hz to 1 MHz. Data are presented for binders with and without aggregate additions; of particular interest was the electrical response of a binary combination of ordinary Portland cement and fly ash. Regarding the latter, when presented on a Nyquist diagram, a characteristic plateau region emerged between the electrode spur and the bulk arc. When presented in the form of dielectric constant and conductivity as a function of frequency, a region of dispersion was evident for all systems. Furthermore, it was shown that by undertaking a dielectric frequency-domain analysis of the data, the experimental results could be synthesized across the frequency range 1 kHz to 1 MHz. Rather than ascribing separate processes to each impedance zone, the observed response could be attributed to a single bulk polarization process. When transformed into the complex impedance plane, there was also good agreement between synthesized and measured response. It is postulated that polarization is as a result of double-layer effects on the grain with a relaxation frequency in the low kilohertz region.

McCarter, W.J.; Starrs, G.; Chrisp, T.M. [Heriot-Watt Univ., Edinburgh (United Kingdom). Dept. of Civil and Offshore Engineering] [Heriot-Watt Univ., Edinburgh (United Kingdom). Dept. of Civil and Offshore Engineering

1999-03-01T23:59:59.000Z

12

The variability of fly ash and its effects on selected properties of fresh Portland cement/fly ash mortars  

E-Print Network [OSTI]

fly ash production. Researchers have subsequently had the opportunity to develop a full body of knowledge concerning bitum1nous ash and its applications. The first s1gn1ficant use of b1tuminous fly ash probably occurred 20 in the 1940's when...THE VARIABILITY OF FLY ASH AND ITS EFFECTS ON SELECTED PROPERTIES OF FRESH PORTLAND CEi'1ENT/FLY ASH MORTARS A Thesis by WILLIAM CARLTON MCKERALL Submitted to the Graduate Co11ege of Texas A&M Uni ver s i ty in partia1 fu1fi11ment...

McKerall, William Carlton

1980-01-01T23:59:59.000Z

13

Use of High-Calcium Fly Ash in Cement-Based Construction Materials  

E-Print Network [OSTI]

, total coal ash production in the world was estimated to be 600 million tons, of which 100 million tons with ASTM 618, coal fly ash is classified into two main categories, Class F fly ash (low-calcium) and Class coal, and Class C fly ash is generated from burning of lignite and subbituminous coals. Class F fly ash

Wisconsin-Milwaukee, University of

14

Unprocessed rice husk ash as a partial replacement of cement for low-cost concrete  

E-Print Network [OSTI]

Cement is a very valuable commodity as it can be used to construct structurally sound buildings and infrastructure. However, in many developing countries cement is expensive due to the unavailability of local resources to ...

Brown, Dorothy Kamilah

2012-01-01T23:59:59.000Z

15

E-Print Network 3.0 - ash cement matrixes Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Engineering ; Materials Science 13 Use of fly ash as an admixture for electromagnetic interference shielding Jingyao Cao, D.D.L. Chung* Summary: to a construc- tion material...

16

Use of Heavy Oil Fly Ash as a Color Ingredient in Cement Mortar  

Science Journals Connector (OSTI)

Heavy oil fly ash (HOFA) is a byproduct generated by the burning of heavy fuel oil. Chemical analysis showed that HOFA is mainly composed of unburned carbon with a significant amount of heavy metals. Due to to...

Abdullah Mofarrah; Tahir Husain

2013-06-01T23:59:59.000Z

17

E-Print Network 3.0 - ash belite cement Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

(WTERT) Collection: Renewable Energy 77 Use of fly ash as an admixture for electromagnetic interference shielding Jingyao Cao, D.D.L. Chung* Summary: to a construc- tion material...

18

A Directory of Dedicated Commemorative Groves, Trees and Display Plantings (sorted by common name)  

E-Print Network [OSTI]

) University of Idaho Arboretum Botanical Garden Paul Warnick Common Name Scientific Name Commemorating Ash North America Fraxinus pennsylvanica, americana etc. Idaho Public Utilities Executives' Course Aspen Groves, Trees and Display Plantings (sorted by common name) University of Idaho Arboretum Botanical

Waits, Lisette

19

Effect of freeze–thaw cycles on the strength and physical properties of cement-stabilised soil containing recycled bassanite and coal ash  

Science Journals Connector (OSTI)

Abstract Earth materials deteriorate physically under freeze–thaw cycling. It is thus important to determine how freeze–thaw cycling affects their properties of new man-made materials in areas experiencing seasonal frost. The effect of variable freeze–thaw cycling on the durability of cement-stabilised soils containing bassanite and coal ash was quantified to promote the use of bassanite in earthwork project in seasonal frost areas. For this purpose, very soft clay was stabilised with 5% cement content by weight of dry soil, and bassanite and coal ash were mixed with it in differing proportions. These stabilised soil samples were subjected to differing numbers of freeze–thaw cycles (up to five cycles), after curing for 28 days. Unconfined compressive strength and several physical properties were investigated after freeze–thaw cycling. The results show that the addition of both bassanite and coal ash improves the strength and durability of stabilised soils significantly, whereas the addition of coal ash alone has a negative effect on strength improvement. Unconfined compressive strength increases with increased bassanite and coal ash contents. With respect to freezing and thawing durability, the first or second cycles of freeze–thaw action markedly decrease the unconfined compressive strength of both treated and untreated cement-stabilised soils, but further cycles have little additional influence. The use of both additives improves durability, and retains 65–85% strength compared to corresponding non-frozen stabilised soils; if either additive is used, the strength is 55–65%; and if no additives are used, about 50%. The effects of freeze–thaw cycling on water content and dry density are negligible compared to those of additive contents. Volume after freezing increased slightly with increase in the number of freeze–thaw cycles, although volume after thawing fell slightly and reached minimum at the first thawing process.

Toshihide Shibi; Takeshi Kamei

2014-01-01T23:59:59.000Z

20

Pioneer Grove | Open Energy Information  

Open Energy Info (EERE)

Grove Grove Jump to: navigation, search Name Pioneer Grove Facility Pioneer Grove Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Acciona Windpower Developer Acciona Energy Energy Purchaser Central Iowa Power Cooperative Location Mechanicsville IA Coordinates 41.85086289°, -91.23407364° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.85086289,"lon":-91.23407364,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Thermal Shock-resistant Cement  

SciTech Connect (OSTI)

We studied the effectiveness of sodium silicate-activated Class F fly ash in improving the thermal shock resistance and in extending the onset of hydration of Secar #80 refractory cement. When the dry mix cement, consisting of Secar #80, Class F fly ash, and sodium silicate, came in contact with water, NaOH derived from the dissolution of sodium silicate preferentially reacted with Class F fly ash, rather than the #80, to dissociate silicate anions from Class F fly ash. Then, these dissociated silicate ions delayed significantly the hydration of #80 possessing a rapid setting behavior. We undertook a multiple heating -water cooling quenching-cycle test to evaluate the cement’s resistance to thermal shock. In one cycle, we heated the 200 and #61616;C-autoclaved cement at 500 and #61616;C for 24 hours, and then the heated cement was rapidly immersed in water at 25 and #61616;C. This cycle was repeated five times. The phase composition of the autoclaved #80/Class F fly ash blend cements comprised four crystalline hydration products, boehmite, katoite, hydrogrossular, and hydroxysodalite, responsible for strengthening cement. After a test of 5-cycle heat-water quenching, we observed three crystalline phase-transformations in this autoclaved cement: boehmite and #61614; and #61543;-Al2O3, katoite and #61614; calcite, and hydroxysodalite and #61614; carbonated sodalite. Among those, the hydroxysodalite and #61614; carbonated sodalite transformation not only played a pivotal role in densifying the cementitious structure and in sustaining the original compressive strength developed after autoclaving, but also offered an improved resistance of the #80 cement to thermal shock. In contrast, autoclaved Class G well cement with and without Class F fly ash and quartz flour failed this cycle test, generating multiple cracks in the cement. The major reason for such impairment was the hydration of lime derived from the dehydroxylation of portlandite formed in the autoclaved cement, causing its volume to expand.

Sugama T.; Pyatina, T.; Gill, S.

2012-02-01T23:59:59.000Z

22

E-Print Network 3.0 - ash based gepolymer Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Utilization Summary: . CHARACTERIZATION AND APPLICATION OF CLASS F FLY ASH AND CLEAN-COAL ASH FOR CEMENT-BASED MATERIALS 2 The major... large amounts of conventional or...

23

Spring Grove Biomass Facility | Open Energy Information  

Open Energy Info (EERE)

Grove Biomass Facility Grove Biomass Facility Jump to: navigation, search Name Spring Grove Biomass Facility Facility Spring Grove Sector Biomass Owner P.H. Glatfelder Location Spring Grove, Pennsylvania Coordinates 39.8745436°, -76.8658078° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.8745436,"lon":-76.8658078,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

24

E-Print Network 3.0 - aluminate cements hydration Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

INTRODUCTION Many entities currently use fly ash in portland cement concrete (PCC) pavements... Transportation & Development and Louisiana State University incorporating...

25

Fly ash carbon passivation  

DOE Patents [OSTI]

A thermal method to passivate the carbon and/or other components in fly ash significantly decreases adsorption. The passivated carbon remains in the fly ash. Heating the fly ash to about 500 and 800 degrees C. under inert gas conditions sharply decreases the amount of surfactant adsorbed by the fly ash recovered after thermal treatment despite the fact that the carbon content remains in the fly ash. Using oxygen and inert gas mixtures, the present invention shows that a thermal treatment to about 500 degrees C. also sharply decreases the surfactant adsorption of the recovered fly ash even though most of the carbon remains intact. Also, thermal treatment to about 800 degrees C. under these same oxidative conditions shows a sharp decrease in surfactant adsorption of the recovered fly ash due to the fact that the carbon has been removed. This experiment simulates the various "carbon burnout" methods and is not a claim in this method. The present invention provides a thermal method of deactivating high carbon fly ash toward adsorption of AEAs while retaining the fly ash carbon. The fly ash can be used, for example, as a partial Portland cement replacement in air-entrained concrete, in conductive and other concretes, and for other applications.

La Count, Robert B; Baltrus, John P; Kern, Douglas G

2013-05-14T23:59:59.000Z

26

Measurements of natural radioactivity and radon exhalation rates from different brands of cement used in Pakistan  

Science Journals Connector (OSTI)

......these radionuclides in large amounts of waste products used in the cement manufacturing, like phosphogypsum, coal fly ash, shale ash, some rare minerals and so on. Fly ash is obtained from coal-fired power plants and certainly contains......

S. A. Mujahid; A. Rahim; S. Hussain; M. Farooq

2008-06-01T23:59:59.000Z

27

Camp Grove Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Grove Wind Farm Grove Wind Farm Jump to: navigation, search Name Camp Grove Wind Farm Facility Camp Grove Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner OEG (Orion Energy Group) Developer OEG (Orion Energy Group) Energy Purchaser AEP-Appalachian Power Location Marshall & Stark Counties IL Coordinates 41.088871°, -89.656684° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.088871,"lon":-89.656684,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

28

Special Cements  

Science Journals Connector (OSTI)

In the production of expansive cements ettringite formation is used and the most popular ... ’s complex is added to Portland cement. Ettringite structure is discussed.

Wieslaw Kurdowski

2014-01-01T23:59:59.000Z

29

Reduction of NO{sub x} emissions from cement kiln/calciner through the use of the NO{sub x}OUT process  

SciTech Connect (OSTI)

The post combustion reduction of NO{sub x} using urea has proven to be an effective method in controlling NO{sub x} from various combustion sources. This process, a selective non-catalytic reduction process known as NO{sub x}OUT, has been successfully demonstrated in a cement kiln/calciner operated by Ash Grove Cement. Testing was done under ten different kiln/calciner operating conditions. Using three to four injectors, NO{sub x} was efficiently reduced from 350--600 pounds per hour (3.5--6.0 lb/ton of clinker) to less than 100 pounds per hour (1.0 lb/ton of clinker). This calculates to a NO{sub x} reduction of > 80% for most cases. Chemical utilization was greater than 50%. A high degree of mixing and a long residence time at an appropriate temperature present in the preheater tower contributed to these excellent results. An average ammonia slip was four ppm above a baseline level at normalized stoichiometric ratio of 1. Based on this demonstration, cement kiln/calciners have been identified as an ideal application for the NO{sub x}OUT Process. NO{sub x} was efficiently and effectively reduced with minimal byproduct emissions and virtually no effect on plant operations.

Sun, W.H. [Nalco Fuel Tech., Naperville, IL (United States); Bisnett, M.J.; Kirk, D.W. [Nalco Fuel Tech, Santa Fe Springs, CA (United States); Steuch, H.E. [Ash Grove Cement Co., Portland, OR (United States); Hille, J. [Ash Grove Cement Co., Seattle, WA (United States)

1994-12-31T23:59:59.000Z

30

Fly ash and concrete: a study determines whether biomass, or coal co-firing fly ash, can be used in concrete  

SciTech Connect (OSTI)

Current US national standards for using fly ash in concrete (ASTM C618) state that fly ash must come from coal combustion, thus precluding biomass-coal co-firing fly ash. The co-fired ash comes from a large and increasing fraction of US power plants due to rapid increases in co-firing opportunity fuels with coal. The fly ashes include coal fly ash, wood fly ash from pure wood combustion, biomass and coal co-fired fly ash SW1 and SW2. Also wood fly ash is blended with Class C or Class F to produce Wood C and Wood E. Concrete samples were prepared with fly ash replacing cement by 25%. All fly ash mixes except wood have a lower water demand than the pure cement mix. Fly ashes, either from coal or non coal combustion, increase the required air entraining agent (AEA) to meet the design specification of the mixes. If AEA is added arbitrarily without considering the amount or existence of fly ash results could lead to air content in concrete that is either too low or too high. Biomass fly ash does not impact concrete setting behaviour disproportionately. Switch grass-coal co-fired fly ash and blended wood fly ash generally lie within the range of pure coal fly ash strength. The 56 day flexure strength of all the fly ash mixes is comparable to that of the pure cement mix. The flexure strength from the coal-biomass co-fired fly ash does not differ much from pure coal fly ash. All fly ash concrete mixes exhibit lower chloride permeability than the pure cement mixes. In conclusion biomass coal co-fired fly ash perform similarly to coal fly ash in fresh and hardened concrete. As a result, there is no reason to exclude biomass-coal co-fired fly ash in concrete.

Wang, Shuangzhen; Baxter, Larry

2006-08-01T23:59:59.000Z

31

Manhattan Project: Groves and the MED, 1942  

Office of Scientific and Technical Information (OSTI)

Colonel James Marshall, 1946 GROVES AND THE MED Colonel James Marshall, 1946 GROVES AND THE MED (1942) Events > Difficult Choices, 1942 More Uranium Research, 1942 More Piles and Plutonium, 1942 Enter the Army, 1942 Groves and the MED, 1942 Picking Horses, November 1942 Final Approval to Build the Bomb, December 1942 The summer of 1942 proved to be a troublesome one for the fledgling bomb project. Colonel James C. Marshall (right) received the assignment of directing the Laboratory for the Development of Substitute Metals, or DSM, the military's initial cover name for the project. Marshall immediately moved from Syracuse, where he served in the Corps's Syracuse Engineer District, to New York City. Concerned that the name DSM would attract too much attention, the military set up the Manhattan Engineer District (MED), established by general order on August 13. Marshall, like most other Army officers, knew nothing of nuclear physics. Furthermore, Marshall and his Army superiors were disposed to move cautiously. In one case, for instance, Marshall delayed purchase of an excellent production site in Tennessee pending further study, while the scientists who had been involved in the project from the start were pressing for immediate purchase. Although Vannevar Bush had carefully managed the transition to Army control, there was not yet a mechanism to arbitrate disagreements between the S-1 Committee and the military. The resulting lack of coordination complicated attempts to gain a higher priority for scarce materials and boded ill for the future of the entire bomb project.

32

Wilders Grove Solid Waste Services Center | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Grove Solid Waste Services Center Project objective: Provide demonstration of Geothermal Heat Pumps viability on energy usage for future Service Centers planned by the City of...

33

ACAA fly ash basics: quick reference card  

SciTech Connect (OSTI)

Fly ash is a fine powdery material created when coal is burned to generate electricity. Before escaping into the environment via the utility stacks, the ash is collected and may be stored for beneficial uses or disposed of, if necessary. The use of fly ash provides environmental benefits, such as the conservation of natural resources, the reduction of greenhouse gas emissions and eliminating the needed for ash disposal in landfills. It is also a valuable mineral resource that is used in construction and manufacturing. Fly ash is used in the production of Portland cement, concrete, mortars and stuccos, manufactured aggregates along with various agricultural applications. As mineral filler, fly ash can be used for paints, shingles, carpet backing, plastics, metal castings and other purposes. This quick reference card is intended to provide the reader basic source, identification and composition, information specifically related to fly ash.

NONE

2006-07-01T23:59:59.000Z

34

Microsoft Word - Forest Grove Expansion I CX.doc  

Broader source: Energy.gov (indexed) [DOE]

, 2011 , 2011 REPLY TO ATTN OF: KEC-4 SUBJECT: Environmental Clearance Memorandum Amit Sinha - TEP-CSB-2 Proposed Action: Forest Grove Substation Expansion Budget Information: Work Order # 255319 Task 03 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021: B4.6 "Additions or modifications to electric power transmission facilities..." Location: Washington County, OR - Section 32, Township 1 North, Range 3 West of the Forest Grove Quadrangle Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA is proposing to expand Forest Grove Substation located in Washington County, OR. The purpose of this project is to improve load service and reliability within the Portland vicinity as per the NERC reliability standards. Within the existing Forest Grove Substation, the

35

EcoGrove Wind Farm | Open Energy Information  

Open Energy Info (EERE)

EcoGrove Wind Farm EcoGrove Wind Farm Jump to: navigation, search Name EcoGrove Wind Farm Facility EcoGrove Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Acciona Developer Acciona Location Stephenson County IL Coordinates 42.452903°, -89.840816° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.452903,"lon":-89.840816,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

36

Cementation Patterns  

Science Journals Connector (OSTI)

...contributions vary in quality, but any...solid bed-rock by cementation...sedimentary rocks covered include...strata ofthe rock record...petroleum reservoir in which...microenvironmental permeability alone. Large...cements in sandstones, kinds ofsilicifica-tion...fabrics, porosity development...

GERALD M. FRIEDMAN

1988-12-02T23:59:59.000Z

37

Investigation of benefit of using coal wastes in cement production  

Science Journals Connector (OSTI)

Waste disposal in coal preparation plants leads to serious environmental problems. These wastes usually contain about 20% carbon, and the composition of the remaining ash is similar to clay. Addition of these wastes to cement clinker raw material utilises carbon as a source of energy. In this investigation, the effect of addition of these waste materials to the raw materials used in cement manufacture is studied. Ordinary type II cement and sulphoaluminate cement may be produced from the wastes. Mechanical strength, chemical and phase analysis, setting time and particle size distribution of the cement were studied. The results of the experiments show that an addition of about 3% of the coal wastes to the raw materials used in cement manufacture produces cements with good quality. Further, energy consumption may be reduced by up to 15%.

A. Sarrafi; M.R. Izadpanah; A. Ebrahimi; A.I. Mansouri

2011-01-01T23:59:59.000Z

38

City of Spring Grove, Minnesota (Utility Company) | Open Energy Information  

Open Energy Info (EERE)

City of Spring Grove, Minnesota (Utility Company) City of Spring Grove, Minnesota (Utility Company) Jump to: navigation, search Name City of Spring Grove Place Minnesota Utility Id 17823 Utility Location Yes Ownership M NERC Location MRO NERC MRO Yes Activity Retail Marketing Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Commercial Demand Commercial Commercial- Single-Phase Commercial Commercial- Three-Phase Commercial Large Commercial Commercial Peak Alert Commercial Peak Alert- Northern Engraving Commercial Peak Alert- Tweeten Lutheran Commercial Residential- Duel Fuel Energy Residential Residential- Single-Phase Residential

39

Twin Groves I Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Groves I Wind Farm Groves I Wind Farm Facility Twin Groves I Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Developer Horizon Wind Energy Location McLean County IL Coordinates 40.463317°, -88.64753° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.463317,"lon":-88.64753,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

40

Forest Grove Light and Power - Energy Efficiency Rebate Programs |  

Broader source: Energy.gov (indexed) [DOE]

Forest Grove Light and Power - Energy Efficiency Rebate Programs Forest Grove Light and Power - Energy Efficiency Rebate Programs Forest Grove Light and Power - Energy Efficiency Rebate Programs < Back Eligibility Commercial Industrial Residential Savings Category Home Weatherization Commercial Weatherization Appliances & Electronics Sealing Your Home Ventilation Heating & Cooling Commercial Heating & Cooling Heat Pumps Water Heating Windows, Doors, & Skylights Maximum Rebate Air Sealing: $400 Duct Sealing: $500 Program Info State Oregon Program Type Utility Rebate Program Rebate Amount Heat Pump with Central Ducts (Replacement): $300 - $1,000 Heat Pump with Central Ducts (Furnace Conversion): $1,400 - $1,900 Heat Pump with Ductless System: $1,500 Clothes Washer: $20 - $70 Refrigerator: $25 Freezer: $25 Electric Water Heater: $25

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Twin Groves II (07) Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Twin Groves II (07) Wind Farm Twin Groves II (07) Wind Farm Facility Twin Groves II (07) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Horizon Wind Energy Developer Horizon Wind Energy Energy Purchaser Constellation Energy Location McLean County IL Coordinates 40.463317°, -88.64753° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.463317,"lon":-88.64753,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

42

Twin Groves II (08) Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Groves II (08) Wind Farm Groves II (08) Wind Farm Jump to: navigation, search Name Twin Groves II (08) Wind Farm Facility Twin Groves II (08) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Horizon Wind Energy Developer Horizon Wind Energy Energy Purchaser Constellation Energy Location McLean County IL Coordinates 40.463317°, -88.64753° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.463317,"lon":-88.64753,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

43

CITY OF MAPLE GROVE Park and Recreation Department  

E-Print Network [OSTI]

CITY OF MAPLE GROVE Park and Recreation Department Job Opportunity POSITION: Recreation Student Intern DEPARTMENT: Parks & Recreation HOURS: 40 hrs/wk, Summer 2014 CONTACT: Website: www hands-on experience in the Parks and Recreation field, working with a very active and growing community

Minnesota, University of

44

Utilization of CFB fly ash for construction applications  

SciTech Connect (OSTI)

Disposal in landfills has been the most common means of handling ash in circulating fluidized bed (CFB) boiler power plants. Recently, larger CFB boilers with generating capacities up to 300 MWe are currently being planned, resulting in increased volumes and disposal cost of ash by-product. Studies have shown that CFB ashes do not pose environmental concerns that should significantly limit their potential utilization. Many uses of CFB ash are being investigated by Foster Wheeler, which can provide more cost-effective ash management. Construction applications have been identified as one of the major uses for CFB ashes. Typically, CFB ash cannot be used as a cement replacement in concrete due to its unacceptably high sulfur content. However, CFB ashes can be used for other construction applications that require less stringent specifications including soil stabilization, road base, structural fill, and synthetic aggregate. In this study, potential construction applications were identified for fly ashes from several CFB boilers firing diverse fuels such as petroleum coke, refuse derived fuel (RDF) and coal. The compressive strength of hydrated fly ashes was measured in order to screen their potential for use in various construction applications. Based on the results of this work, the effects of both ash chemistry and carbon content on utilization potential were ascertained. Actual beneficial uses of ashes evaluated in this study are also discussed.

Conn, R.E.; Sellakumar, K.; Bland, A.E.

1999-07-01T23:59:59.000Z

45

Cement, Ceramics, and Composites  

Science Journals Connector (OSTI)

Cement and its applications as concrete (a composite of cement and aggregate) are known throughout the world. The most common cement used today is Portland, named after the gray rock of Portland, Eng...

O. V. Roussak; H. D. Gesser

2013-01-01T23:59:59.000Z

46

Cement, Ceramics, and Composites  

Science Journals Connector (OSTI)

Cement and its applications as concrete (a composite of cement and aggregate) is known throughout the world. The most common cement used today is Portland, named after the grey rock of Portland, Engl...

H. D. Gesser

2002-01-01T23:59:59.000Z

47

Vine Grove, Kentucky: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Vine Grove, Kentucky: Energy Resources Vine Grove, Kentucky: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 37.8100674°, -85.9813524° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.8100674,"lon":-85.9813524,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

48

Loxahatchee Groves, Florida: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Loxahatchee Groves, Florida: Energy Resources Loxahatchee Groves, Florida: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 26.6836768°, -80.27977° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":26.6836768,"lon":-80.27977,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

49

Garden Grove, California: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Grove, California: Energy Resources Grove, California: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 33.7739053°, -117.9414477° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":33.7739053,"lon":-117.9414477,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

50

Downers Grove, Illinois: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Downers Grove, Illinois: Energy Resources Downers Grove, Illinois: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 41.8089191°, -88.0111746° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.8089191,"lon":-88.0111746,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

51

Beech Grove, Indiana: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Grove, Indiana: Energy Resources Grove, Indiana: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 39.7219884°, -86.0899847° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.7219884,"lon":-86.0899847,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

52

City of Grove City, Minnesota (Utility Company) | Open Energy Information  

Open Energy Info (EERE)

City, Minnesota (Utility Company) City, Minnesota (Utility Company) Jump to: navigation, search Name City of Grove City Place Minnesota Utility Id 7732 Utility Location Yes Ownership M NERC Location MRO Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Demand-Large Three Phase. Commercial Three Phase Commercial Yard Light Lighting small single phase Residential Average Rates Residential: $0.1130/kWh Commercial: $0.1030/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a" Retrieved from "http://en.openei.org/w/index.php?title=City_of_Grove_City,_Minnesota_(Utility_Company)&oldid=409689"

53

Pleasant Grove, Utah: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Grove, Utah: Energy Resources Grove, Utah: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 40.3641184°, -111.73854° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.3641184,"lon":-111.73854,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

54

Elk Grove, California: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Grove, California: Energy Resources Grove, California: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 38.4087993°, -121.3716178° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.4087993,"lon":-121.3716178,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

55

Elm Grove, Wisconsin: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Grove, Wisconsin: Energy Resources Grove, Wisconsin: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 43.0430678°, -88.078978° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.0430678,"lon":-88.078978,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

56

Morton Grove, Illinois: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Morton Grove, Illinois: Energy Resources Morton Grove, Illinois: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 42.0405852°, -87.7825621° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.0405852,"lon":-87.7825621,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

57

Willow Grove, Pennsylvania: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Grove, Pennsylvania: Energy Resources Grove, Pennsylvania: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 40.1439985°, -75.1157286° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.1439985,"lon":-75.1157286,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

58

Sugar Grove, Illinois: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Sugar Grove, Illinois: Energy Resources Sugar Grove, Illinois: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 41.7614181°, -88.443686° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.7614181,"lon":-88.443686,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

59

Franklin Grove, Illinois: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Grove, Illinois: Energy Resources Grove, Illinois: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 41.8416982°, -89.3003765° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.8416982,"lon":-89.3003765,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

60

Leland Grove, Illinois: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Leland Grove, Illinois: Energy Resources Leland Grove, Illinois: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 39.7769953°, -89.6792671° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.7769953,"lon":-89.6792671,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Walnut Grove, California: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Grove, California: Energy Resources Grove, California: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 38.2421371°, -121.5116197° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.2421371,"lon":-121.5116197,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

62

Pingree Grove, Illinois: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Pingree Grove, Illinois: Energy Resources Pingree Grove, Illinois: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 42.0686367°, -88.4134159° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.0686367,"lon":-88.4134159,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

63

Lemon Grove, California: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Lemon Grove, California: Energy Resources Lemon Grove, California: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 32.7425516°, -117.0314172° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.7425516,"lon":-117.0314172,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

64

High-performance, high-volume fly ash concrete  

SciTech Connect (OSTI)

This booklet offers the construction professional an in-depth description of the use of high-volume fly ash in concrete. Emphasis is placed on the need for increased utilization of coal-fired power plant byproducts in lieu of Portland cement materials to eliminate increased CO{sub 2} emissions during the production of cement. Also addressed is the dramatic increase in concrete performance with the use of 50+ percent fly ash volume. The booklet contains numerous color and black and white photos, charts of test results, mixtures and comparisons, and several HVFA case studies.

NONE

2008-01-15T23:59:59.000Z

65

Maple Grove Hot Springs Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Maple Grove Hot Springs Geothermal Area Maple Grove Hot Springs Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Maple Grove Hot Springs Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (0) 10 References Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"300px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.3083,"lon":-111.7068,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

66

Coal fly ash: the most powerful tool for sustainability of the concrete industry  

SciTech Connect (OSTI)

In the last 15 years the global cement industry has almost doubled its annual rate of direct emissions of carbon dioxide. These can be cut back by reducing global concrete consumption, reducing the volume of cement paste in mixtures and reducing the proportion of portland clinker in cement. It has recently been proved that use of high volumes of coal fly ash can produce low cost, durable, sustainable cement and concrete mixtures that would reduce the carbon footprint of both the cement and the power generation industries. 2 photos.

Mehta, P.K. [University of California, Berkeley, CA (United States)

2008-07-01T23:59:59.000Z

67

Comparison of modified sulfur cement and hydraulic cement for encapsulation of radioactive and mixed wastes  

SciTech Connect (OSTI)

The majority of solidification/stabilization systems for low-level radioactive waste (LLW) and mixed waste, both in the commercial sector and at Department of Energy (DOE) facilities, utilize hydraulic cement (such as portland cement) to encapsulate waste materials and yield a monolithic solid waste form for disposal. A new and innovative process utilizing modified sulfur cement developed by the US Bureau of Mines has been applied at Brookhaven National Laboratory (BNL) for the encapsulation of many of these problem'' wastes. Modified sulfur cement is a thermoplastic material, and as such, it can be heated above it's melting point (120{degree}C), combined with dry waste products to form a homogeneous mixture, and cooled to form a monolithic solid product. Under sponsorship of the DOE, research and development efforts at BNL have successfully applied the modified sulfur cement process for treatment of a range of LLWs including sodium sulfate salts, boric acid salts, and incinerator bottom ash and for mixed waste contaminated incinerator fly ash. Process development studies were conducted to determine optimal waste loadings for each waste type. Property evaluation studies were conducted to test waste form behavior under disposal conditions by applying relevant performance testing criteria established by the Nuclear Regulatory Commission (for LLW) and the Environmental Protection Agency (for hazardous wastes). Based on both processing and performance considerations, significantly greater waste loadings were achieved using modified sulfur cement when compared with hydraulic cement. Technology demonstration of the modified sulfur cement encapsulation system using production-scale equipment is scheduled for FY 1991. 12 refs., 8 figs., 3 tabs.

Kalb, P.D.; Heiser, J.H. III; Colombo, P.

1990-01-01T23:59:59.000Z

68

A renewable energy plan for the Oak Grove Sanitary Landfill In Winder, Georgia.  

E-Print Network [OSTI]

??Oak Grove Sanitary Landfill in Winder, Georgia is already refining its landfill gas (LFG) and sending it through the natural gas pipeline. This is more… (more)

Hambrick, Tracy L.

2011-01-01T23:59:59.000Z

69

E-Print Network 3.0 - artificial fly ash-clay Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

fly ash-clay Page: << < 1 2 3 4 5 > >> 1 Study of composite cement containing burned oil shale Summary: studied. Context SiO2 CaO Al2O3 OPC BFS Class C fly ash Clays Metakaolin...

70

Properties of concrete incorporating high volumes of ASTM Class F fly ash  

E-Print Network [OSTI]

This thesis presents the results of research performed in developing high-volume fly ash (HVFA) concrete incorporating ASTM Type I cement and ASTM Class F fly ash from Big Brown Power Plant of TU Electric, Texas. In HVFA concrete, the proportion...

Li, Wei Tung

1995-01-01T23:59:59.000Z

71

Utilizing New Binder Materials for Green Building has Zero Waste by Recycling Slag and Sewage Sludge Ash  

E-Print Network [OSTI]

binding material to save energy and to produce new innovative zero materials waste . The current research aims to investigate new binder materials as alternative of Portland cement. Alkali activated slag (AAS) blended with sewage sludge ash (SSA...

Zeedan, S. R.

2010-01-01T23:59:59.000Z

72

Alternative Fuel for Portland Cement Processing  

SciTech Connect (OSTI)

The production of cement involves a combination of numerous raw materials, strictly monitored system processes, and temperatures on the order of 1500 °C. Immense quantities of fuel are required for the production of cement. Traditionally, energy from fossil fuels was solely relied upon for the production of cement. The overarching project objective is to evaluate the use of alternative fuels to lessen the dependence on non-renewable resources to produce portland cement. The key objective of using alternative fuels is to continue to produce high-quality cement while decreasing the use of non-renewable fuels and minimizing the impact on the environment. Burn characteristics and thermodynamic parameters were evaluated with a laboratory burn simulator under conditions that mimic those in the preheater where the fuels are brought into a cement plant. A drop-tube furnace and visualization method were developed that show potential for evaluating time- and space-resolved temperature distributions for fuel solid particles and liquid droplets undergoing combustion in various combustion atmospheres. Downdraft gasification has been explored as a means to extract chemical energy from poultry litter while limiting the throughput of potentially deleterious components with regards to use in firing a cement kiln. Results have shown that the clinkering is temperature independent, at least within the controllable temperature range. Limestone also had only a slight effect on the fusion when used to coat the pellets. However, limestone addition did display some promise in regards to chlorine capture, as ash analyses showed chlorine concentrations of more than four times greater in the limestone infused ash as compared to raw poultry litter. A reliable and convenient sampling procedure was developed to estimate the combustion quality of broiler litter that is the best compromise between convenience and reliability by means of statistical analysis. Multi-day trial burns were conducted at a full-scale cement plant with alternative fuels to examine their compatibility with the cement production process. Construction and demolition waste, woodchips, and soybean seeds were used as alternative fuels at a full-scale cement production facility. These fuels were co-fired with coal and waste plastics. The alternative fuels used in this trial accounted for 5 to 16 % of the total energy consumed during these burns. The overall performance of the portland cement produced during the various trial burns performed for practical purposes very similar to the cement produced during the control burn. The cement plant was successful in implementing alternative fuels to produce a consistent, high-quality product that increased cement performance while reducing the environmental footprint of the plant. The utilization of construction and demolition waste, woodchips and soybean seeds proved to be viable replacements for traditional fuels. The future use of these fuels depends on local availability, associated costs, and compatibility with a facilityâ??s production process.

Anton K. Schindler; Steve R. Duke; Thomas E. Burch; Edward W. Davis; Ralph H. Zee; David I. Bransby; Carla Hopkins; Rutherford L. Thompson; Jingran Duan; Vignesh Venkatasubramanian; Stephen Giles.

2012-06-30T23:59:59.000Z

73

City of Forest Grove, Oregon (Utility Company) | Open Energy Information  

Open Energy Info (EERE)

(Utility Company) (Utility Company) Jump to: navigation, search Name City of Forest Grove Place Oregon Utility Id 6582 Utility Location Yes Ownership M NERC Location WECC NERC WECC Yes Activity Buying Transmission Yes Activity Distribution Yes Alt Fuel Vehicle2 Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png GENERAL SERVICE SINGLE PHASE Commercial GENERAL SERVICE SINGLE PHASE TOU Commercial GENERAL SERVICE THREE PHASE Commercial GENERAL SERVICE THREE PHASE TOU Commercial INDUSTRIAL SERVICE Industrial LARGE COMMERCIAL SERVICE Commercial PURE POWER RENEWABLE ENERGY RATE Residential

74

Borough of Grove City, Pennsylvania (Utility Company) | Open Energy  

Open Energy Info (EERE)

Pennsylvania (Utility Company) Pennsylvania (Utility Company) Jump to: navigation, search Name Borough of Grove City Place Pennsylvania Utility Id 7719 Utility Location Yes Ownership M NERC Location RFC NERC RFC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Commercial Service Commercial General Service Commercial Primary Power Service Commercial Primary Power Service - 2 Industrial Residential Electric Heating Residential Residential Service Residential Average Rates Residential: $0.1090/kWh Commercial: $0.0962/kWh Industrial: $0.0770/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a"

75

Feasible experimental study on the utilization of a 300 MW CFB boiler desulfurizating bottom ash for construction applications  

SciTech Connect (OSTI)

CFB boiler ash cannot be used as a cement replacement in concrete due to its unacceptably high sulfur content. The disposal in landfills has been the most common means of handling ash in circulating fluidized bed boiler power plants. However for a 300 MW CFB boiler power plant, there will be 600,000 tons of ash discharged per year and will result in great volumes and disposal cost of ash byproduct. It was very necessary to solve the utilization of CFB ash and to decrease the disposal cost of CFB ash. The feasible experimental study results on the utilization of the bottom ashes of a 300 MW CFB boiler in Baima power plant in China were reported in this paper. The bottom ashes used for test came from the discharged bottom ashes in a 100 MW CFB boiler in which the anthracite and limestone designed for the 300 MW CFB project was burned. The results of this study showed that the bottom ash could be used for cementitious material, road concrete, and road base material. The masonry cements, road concrete with 30 MPa compressive strength and 4.0 MPa flexural strength, and the road base material used for base courses of the expressway, the main road and the minor lane were all prepared with milled CFB bottom ashes in the lab. The better methods of utilization of the bottom ashes were discussed in this paper.

Lu, X.F.; Amano, R.S. [University of Wisconsin, Milwaukee, WI (United States). Dept. of Mechanical Engineering

2006-12-15T23:59:59.000Z

76

Problems in squeeze cementing  

SciTech Connect (OSTI)

For the past half century, work has been carried out to improve squeeze cementing. During the course of time, new techniques, equipment, cement and cement additives were introduced. Work is still underway to improve squeeze cementing. Basic concept of squeeze cementing, understanding the problems, planning for a squeeze job and then later testing of the job help in achieving the goal. Solutions were offered to some common problems, whereas many regional problems need time to time study and effort. Squeezing long perforations in highly permeable sand has always been a problem, for which some techniques were presented.

Toor, I.A.

1983-03-01T23:59:59.000Z

77

The influence of high quantity of fly ash on reducing the expansion due to ASR in the presence of alkalis  

E-Print Network [OSTI]

A testing program was devised to study the role of high volume fly ash (HVFA) in reducing the expansion caused by alkali-silica reaction (ASR). A series of modified ASTM C 1260 tests were performed, where the replacement of cement by Class F fly ash...

Mohidekar, Saleel D.

2000-01-01T23:59:59.000Z

78

MARKET ASSESSMENT AND TECHNICAL FEASIBILITY STUDY OF PRESSURIZED FLUIDIZED BED COMBUSTION ASH USE  

SciTech Connect (OSTI)

Western Research Institute, in conjunction with the Electric Power Research Institute, Foster Wheeler International, Inc. and the US Department of Energy, has undertaken a research and demonstration program designed to examine the market potential and the technical feasibility of ash use options for PFBC ashes. Ashes from the Foster Wheeler Energia Oy pilot-scale circulating PFBC tests in Karhula, Finland, combusting (1) low-sulfur subbituminous and (2) high-sulfur bituminous coal, and ash from the AEP's high-sulfur bituminous coal-fired bubbling PFBC in Brilliant, Ohio, were evaluated in laboratory and pilot-scale ash use testing at WR1. The technical feasibility study examined the use of PFBC ash in construction-related applications, including its use as a cementing material in concrete and use in cement manufacturing, fill and embankment materials, soil stabilization agent, and use in synthetic aggregate production. Testing was also conducted to determine the technical feasibility of PFBC ash as a soil amendment for acidic and sodic problem soils and spoils encountered in agricultural and reclamation applications. The results of the technical feasibility testing indicated the following conclusions. PFBC ash does not meet the chemical requirements as a pozzolan for cement replacement. However, it does appear that potential may exist for its use in cement production as a pozzolan and/or as a set retardant. PFBC ash shows relatively high strength development, low expansion, and low permeability properties that make its use in fills and embankments promising. Testing has also indicated that PFBC ash, when mixed with low amounts of lime, develops high strengths, suitable for soil stabilization applications and synthetic aggregate production. Synthetic aggregate produced from PFBC ash is capable of meeting ASTM/AASHTO specifications for many construction applications. The residual calcium carbonate and calcium sulfate in the PFE3C ash has been shown to be of value in making PFBC ash a suitable soil amendment for acidic and sodic problem soils and mine spoils. In conclusion, PFBC ash represents a viable material for use in currently established applications for conventional coal combustion ashes. As such, PFBC ash should be viewed as a valuable resource, and commercial opportunities for these materials should be explored for planned PFBC installations.

A.E. Bland; T.H. Brown

1997-04-01T23:59:59.000Z

79

Disposal of boiler ash  

SciTech Connect (OSTI)

As more boilers are converted from oil to solid fuels such as coal, the quantity of ash requiring disposal will increase dramatically. The factors associated with the development of land disposal systems for ash landfills are presented, including ash characterization, site selection procedures, design parameters, and costs.

Atwell, J.S.

1981-08-01T23:59:59.000Z

80

Cement (2010 MECS)  

Broader source: Energy.gov [DOE]

Manufacturing Energy and Carbon Footprint for Cement Sector (NAICS 327310) Energy use data source: 2010 EIA MECS (with adjustments) Footprint Last Revised: February 2014

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Market Assessment and Technical Feasibility Study of Pressurized Fluidized Bed Combustion Ash Use  

SciTech Connect (OSTI)

Western Research Institute in conjunction with the Electric Power Research Institute, Foster Wheeler Energy International, Inc. and the U.S. Department of Energy Technology Center (METC), has undertaken a research and demonstration program designed to examine the market potential and the technical feasibility of ash use options for pressurized fluidized bed combustion (PFBC) ashes. The assessment is designed to address six applications, including: (1) structural fill, (2) road base construction, (3) supplementary cementing materials in portland cement, (4) synthetic aggregate, and (5) agricultural/soil amendment applications. Ash from low-sulfur subbituminous coal-fired Foster Wheeler Energia Oy pilot circulating PFBC tests in Karhula, Finland, and ash from the high-sulfur bituminous coal-fired American Electric Power (AEP) bubbling PFBC in Brilliant, Ohio, were evaluated in laboratory and pilot-scale ash use testing. This paper addresses the technical feasibility of ash use options for PFBC unit using low- sulfur coal and limestone sorbent (karhula ash) and high-sulfur coal and dolomite sorbents (AEP Tidd ash).

Bland, A.E.; Brown, T.H. [Western Research Inst., Laramie, WY (United States)

1996-12-31T23:59:59.000Z

82

Alex Benson Cement Plants  

E-Print Network [OSTI]

with steel balls which grind mix into a fine powder -> Final Cement Product Associated Air Pollution: o From health effects Relative News; o "EPA Clamps down on Cement Plant Pollution" http.4 million dollars for violating the Clean Air Act and 2 million dollars for pollution controls #12

Toohey, Darin W.

83

Hard x-ray nanotomography of amorphous aluminosilicate cements.  

SciTech Connect (OSTI)

Nanotomographic reconstruction of a sample of low-CO{sub 2} 'geopolymer' cement provides the first three-dimensional view of the pore structure of the aluminosilicate geopolymer gel, as well as evidence for direct binding of geopolymer gel onto unreacted fly ash precursor particles. This is central to understanding and optimizing the durability of concretes made using this new class of binder, and demonstrates the value of nanotomography in providing a three-dimensional view of nanoporous inorganic materials.

Provis, J. L.; Rose, V.; Winarski, R. P.; van Deventer, J. S. J. (Advanced Photon Source); ( CNM)

2011-08-01T23:59:59.000Z

84

History and some potentials of oil shale cement  

SciTech Connect (OSTI)

The utilization of oil shale as a cement component is discussed. It was investigated in America and Europe during World War I. Additional development occurred in Western Europe, Russia, and China during the 1920s and 1930s. World War II provided further development incentives and a relatively mature technology was in place in Germany, Russia, and China prior to 1980. The utilization of oil shale in cement has taken a number of different paths. One approach has been to utilize the energy in the oil shale as the principal source for the cement plant and to use the combusted shale as a minor constituent of the plant's cement product. A second approach has been to use the combusted shale as a class C or cementitious fly-ash component in portland cement concrete. Other approaches utilizing eastern oil shale have been to use the combusted oil shale with additives as a specialty cement, or to cocombust the oil shale with coal and utilize the sulfur-rich combustion product.

Knutson, C.F.; Smith, R.P.; Russell, B.F. (Idaho National Engineering Lab., Idaho Falls, ID (USA))

1989-01-01T23:59:59.000Z

85

Lead contents of coal, coal ash and fly ash  

Science Journals Connector (OSTI)

Flameless atomic absorption spectrometry is applied for the determination of Pb in coal, coal ash and fly ash. Lead concentrations in coal and coal ash ranging from respectively 7 to 110 µg...?1 and 120 to 450 µg...

C. Block; R. Dams

1975-12-01T23:59:59.000Z

86

A Review of Emerging Energy-efficiency and CO2 Emission-reduction Technologies for Cement and Concrete Production  

E-Print Network [OSTI]

- Environmental Advantages. Available at http://www.ceratechinc.com/environmental- advantages.asp Cross, D., J. Stephens, J. Vollmer. 2005. Structural Applications of 100 Percent Fly Ash Concrete. 2005 World of Coal Ash (WOCA), Lexington, Kentucky, USAApril...://recocement.com/ Roskos, C., D. Cross, M. Berry, J. Stephens. 2011. Identification and Verification of Self-Cementing Fly Ash Binders for ?Green? Concrete. 2011 World of Coal Ash (WOCA) Conference ? May 9-12, 2011 in Denver CO, USA. Available at www.flyash.info/2011...

Hasanbeigi, A.; Price, L.; Lin, E.

2012-01-01T23:59:59.000Z

87

OAK GROVE C OAL D EGAS CEDAR COVE COAL D EGAS BLU E CREEK COAL...  

Gasoline and Diesel Fuel Update (EIA)

OAK GROVE C OAL D EGAS CEDAR COVE COAL D EGAS BLU E CREEK COAL DEGAS BR OOKWOOD C OAL D EGAS ST AR ROBIN SONS BEND COAL D EGAS BLU FF COR INNE MOU NDVILLE COAL D EGAS BLU EGU T CR...

88

DOE Zero Energy Ready Home Case Study, Weiss Building & Development, LLC., Custom Home, Downer Grove, IL  

Broader source: Energy.gov [DOE]

Case study of a DOE Zero Energy Ready Home in Downers Grove, IL that scored HERS 35 without PV. This 3,600 ft2 custom home has advanced framed walls with R-23 dense-packed fiberglass plus R-13 rigid polyiso, a sealed attic with open-cell spray foam, a pier foundation, and 95% efficient gas furnace.

89

Integrating Design Tools for Building Design ROBERT W. AMOR, LINDSAY J. GROVES and MIKE R. DONN  

E-Print Network [OSTI]

Integrating Design Tools for Building Design ROBERT W. AMOR, LINDSAY J. GROVES and MIKE R. DONN for architectural design. Currently a large amount of information is duplicated in describing a building to different design tools. To enable designers to use different design tools to evaluate a building design

Amor, Robert

90

Assessment of gas-side fouling in cement plants  

SciTech Connect (OSTI)

The purpose of this study is to provide an assessment of gas-side fouling in cement plants with special emphasis on heat recovery applications. Exhaust gases in the cement industry which are suitable for heat recovery range in temperature from about 400 to 1300 K, are generally dusty, may be highly abrasive, and are often heavily laden with alkalies, sulfates, and chlorides. Particulates in the exhaust streams range in size from molecular to about 100 ..mu..m in diameter and come from both the raw feed as well as the ash in the coal which is the primary fuel used in the cement industry. The major types of heat-transfer equipment used in the cement industry include preheaters, gas-to-air heat exchangers, waste heat boilers, and clinker coolers. The most important gas-side fouling mechanisms in the cement industry are those due to particulate, chemical reaction, and corrosion fouling. Particulate transport mechanisms which appear to be of greatest importance include laminar and turbulent mass transfer, thermophoresis, electrophoresis, and inertial impaction. Chemical reaction mechanisms of particular importance include the deposition of alkali sulfates, alkali chlorides, spurrite, calcium carbonate, and calcium sulfate. At sufficiently low temperatures, sulfuric acid and water can condense on heat exchanger surfaces which can cause corrosion and also attract particulates in the flow. The deleterious effects of gas-side fouling in cement plants are due to: (1) increased capital costs; (2) increased maintenance costs; (3) loss of production; and (4) energy losses. A conservative order-of-magnitude analysis shows that the cost of gas-side fouling in US cement plants is $0.24 billion annually.

Marner, W.J.

1982-09-01T23:59:59.000Z

91

Full-scale tests of sulfur polymer cement and non-radioactive waste in heated and unheated prototypical containers  

SciTech Connect (OSTI)

Sulfur polymer cement has been demonstrated to be superior to portland cement in the stabilization of numerous troublesome low- level radioactive wastes, notably mixed waste fly ash, which contains heavy metals. EG G Idaho, Inc. conducted full-scale, waste-stabilization tests with a mixture of sulfur polymer cement and nonradioactive incinerator ash poured over simulated steel and ash wastes. The container used to contain the simulated waste for the pour was a thin-walled, rectangular, steel container with no appendages. The variable in the tests was that one container and its contents were at 65{degree}F (18{degree}C) at the beginning of the pour, while the other was preheated to 275{degree}F (135{degree}C) and was insulated before the pour. The primary goal was to determine the procedures and equipment deemed operationally acceptable and capable of providing the best probability of passing the only remaining governmental test for sulfur polymer cement, the Nuclear Regulatory Commission's full-scale test. The secondary goal was to analyze the ability of the molten cement and ash mixture to fill different size pipes and thus eliminate voids in the resultant 24 ft{sup 3} monolith.

Darnell, G.R.; Aldrich, W.C.; Logan, J.A.

1992-02-01T23:59:59.000Z

92

Full-scale tests of sulfur polymer cement and non-radioactive waste in heated and unheated prototypical containers  

SciTech Connect (OSTI)

Sulfur polymer cement has been demonstrated to be superior to portland cement in the stabilization of numerous troublesome low- level radioactive wastes, notably mixed waste fly ash, which contains heavy metals. EG&G Idaho, Inc. conducted full-scale, waste-stabilization tests with a mixture of sulfur polymer cement and nonradioactive incinerator ash poured over simulated steel and ash wastes. The container used to contain the simulated waste for the pour was a thin-walled, rectangular, steel container with no appendages. The variable in the tests was that one container and its contents were at 65{degree}F (18{degree}C) at the beginning of the pour, while the other was preheated to 275{degree}F (135{degree}C) and was insulated before the pour. The primary goal was to determine the procedures and equipment deemed operationally acceptable and capable of providing the best probability of passing the only remaining governmental test for sulfur polymer cement, the Nuclear Regulatory Commission`s full-scale test. The secondary goal was to analyze the ability of the molten cement and ash mixture to fill different size pipes and thus eliminate voids in the resultant 24 ft{sup 3} monolith.

Darnell, G.R.; Aldrich, W.C.; Logan, J.A.

1992-02-01T23:59:59.000Z

93

ULTRA-LIGHTWEIGHT CEMENT  

SciTech Connect (OSTI)

The objective of this project is to develop an improved ultra-lightweight cement using ultra-lightweight hollow glass spheres (ULHS). Work reported herein addresses tasks performed in the fourth quarter as well as the other three quarters of the past year. The subjects that were covered in previous reports and that are also discussed in this report include: Analysis of field laboratory data of active cement applications from three oil-well service companies; Preliminary findings from a literature review focusing on problems associated with ultra-lightweight cements; Summary of pertinent information from Russian ultra-lightweight cement literature review; and Comparison of compressive strengths of ULHS systems using ultrasonic and crush methods Results reported from the fourth quarter include laboratory testing of ULHS systems along with other lightweight cement systems--foamed and sodium silicate slurries. These comparison studies were completed for two different densities (10.0 and 11.5 lb/gal) and three different field application scenarios. Additional testing included the mechanical properties of ULHS systems and other lightweight systems. Studies were also performed to examine the effect that circulation by centrifugal pump during mixing has on breakage of ULHS.

Fred Sabins

2001-10-23T23:59:59.000Z

94

High temperature lightweight foamed cements  

DOE Patents [OSTI]

Cement slurries are disclosed which are suitable for use in geothermal wells since they can withstand high temperatures and high pressures. The formulation consists of cement, silica flour, water, a retarder, a foaming agent, a foam stabilizer, and a reinforcing agent. A process for producing these cements is also disclosed. 3 figs.

Sugama, Toshifumi.

1989-10-03T23:59:59.000Z

95

Guidebook for Using the Tool BEST Cement: Benchmarking and Energy Savings Tool for the Cement Industry  

SciTech Connect (OSTI)

The Benchmarking and Energy Savings Tool (BEST) Cement is a process-based tool based on commercially available efficiency technologies used anywhere in the world applicable to the cement industry. This version has been designed for use in China. No actual cement facility with every single efficiency measure included in the benchmark will likely exist; however, the benchmark sets a reasonable standard by which to compare for plants striving to be the best. The energy consumption of the benchmark facility differs due to differences in processing at a given cement facility. The tool accounts for most of these variables and allows the user to adapt the model to operational variables specific for his/her cement facility. Figure 1 shows the boundaries included in a plant modeled by BEST Cement. In order to model the benchmark, i.e., the most energy efficient cement facility, so that it represents a facility similar to the user's cement facility, the user is first required to input production variables in the input sheet (see Section 6 for more information on how to input variables). These variables allow the tool to estimate a benchmark facility that is similar to the user's cement plant, giving a better picture of the potential for that particular facility, rather than benchmarking against a generic one. The input variables required include the following: (1) the amount of raw materials used in tonnes per year (limestone, gypsum, clay minerals, iron ore, blast furnace slag, fly ash, slag from other industries, natural pozzolans, limestone powder (used post-clinker stage), municipal wastes and others); the amount of raw materials that are preblended (prehomogenized and proportioned) and crushed (in tonnes per year); (2) the amount of additives that are dried and ground (in tonnes per year); (3) the production of clinker (in tonnes per year) from each kiln by kiln type; (4) the amount of raw materials, coal and clinker that is ground by mill type (in tonnes per year); (5) the amount of production of cement by type and grade (in tonnes per year); (6) the electricity generated onsite; and, (7) the energy used by fuel type; and, the amount (in RMB per year) spent on energy. The tool offers the user the opportunity to do a quick assessment or a more detailed assessment--this choice will determine the level of detail of the energy input. The detailed assessment will require energy data for each stage of production while the quick assessment will require only total energy used at the entire facility (see Section 6 for more details on quick versus detailed assessments). The benchmarking tool provides two benchmarks--one for Chinese best practices and one for international best practices. Section 2 describes the differences between these two and how each benchmark was calculated. The tool also asks for a target input by the user for the user to set goals for the facility.

Galitsky, Christina; Price, Lynn; Zhou, Nan; Fuqiu , Zhou; Huawen, Xiong; Xuemin, Zeng; Lan, Wang

2008-07-30T23:59:59.000Z

96

The Fusibility of Blended Coal Ash  

Science Journals Connector (OSTI)

Ash fusibility temperatures (AFT) of coal ash are found at temperatures below the predicted liquidus temperature and, for ashes from blended coals, are generally nonlinear with respect to the blend proportion. ... ashing. ...

G. W. Bryant; G. J. Browning; H. Emanuel; S. K. Gupta; R. P. Gupta; J. A. Lucas; T. F. Wall

2000-02-25T23:59:59.000Z

97

California bearing ratio behavior of soil-stabilized class F fly ash systems  

SciTech Connect (OSTI)

Fly ash is a finely divided mineral residue resulting from the combustion of coal in power plants that occupies large extents of land and also causes environmental problems. Hence, concerted attempts are being made to effectively use fly ash in an environmentally friendly way instead of dumping. Several studies have been carried out for its bulk utilization, such as its addition to improve the California bearing ratio (CBR) of soil in roads and embankments. But a thorough mixing of fly ash with soil may not be possible in the field. Hence a study has been carried out on the CBR behavior of black cotton soil and Raichur fly ash (which is class F) in layers and compared with the same in mixes. The results show that the CBR values of soil-fly ash mixes are better than layers, as expected. To improve the strength of layers, cement is used as an additive to fly ash. The results show that black cotton soil can be improved with stabilized fly ash, solving its strength problem as well as the disposal problem of fly ash.

Leelavathamma, B.; Mini, K.M.; Pandian, N.S. [Indian Institute for Science, Bangalore (India). Dept. for Civil Engineering

2005-11-01T23:59:59.000Z

98

Utilization FLY ASH INFORMATION FROM  

E-Print Network [OSTI]

, quarries, and pits (34%), 6% for temporary stockpile, and 7% landfilled. Fly Ash In Europe, the utilization

Wisconsin-Milwaukee, University of

99

Entrained-flow dry-bottom gasification of high-ash coals in coal-water slurries  

SciTech Connect (OSTI)

It was shown that the effective use of dry ash removal during entrained-flow gasification of coal-water slurries consists in simplification of the ash storage system and utilization of coal ash, a decrease in the coal demand, a reduction in the atmospheric emissions of noxious substances and particulate matter, and abandonment of the discharge of water used for ash slurry. According to the results of gasification of coal-water slurries (5-10 {mu}m) in a pilot oxygen-blow unit at a carbon conversion of >91%, synthesis gas containing 28.5% CO, 32.5% H{sub 2}, 8.2% CO{sub 2}, 1.5% CH{sub 4}, the rest being nitrogen, was obtained. The fly ash in its chemical composition, particle size, and density meets the requirements of the European standard EN 450 as a cement additive for concrete manufacture.

E.G. Gorlov; V.G. Andrienko; K.B. Nefedov; S.V. Lutsenko; B.K. Nefedov [Institute for Fossil Fuels, Moscow (Russian Federation)

2009-04-15T23:59:59.000Z

100

Characterization of fly ashes from circulating fluidized bed combustion (CFBC) boilers cofiring coal and petroleum coke  

SciTech Connect (OSTI)

The chemistry, mineralogy, morphology, and particle size distribution were investigated in fly ashes from the burning of Datong (ShanXi, China) bituminous coal and the cofiring of Mideast high-sulfur petroleum coke (PC) with 30:70 (cal %) and 50:50 (cal %) blends of Datong bituminous coal in two commercial CFBC boilers. With the exception of CaO, the amounts of major oxides in the fly ashes from cofiring PC and coal were close to those of the common coal fly ashes. The PC-coal fly ashes were enriched in Ni, V, and Mo, implying these trace elements were mainly derived from PC. Ni and V, along with several other elements, such as Cr, Cu, Se, Pb, U, Th, and possibly As and Cd, increased in content with a decrease in temperature of the electrostatic precipitator (ESP). The results of chemistry, mineralogy, and morphology studies suggested that the desulfurization rate of the CFBC boilers at current conditions was low, and the PC tends to coarsen the fly ash particles and increase the loss on ignition (LOI) values, making these fly ashes unsuitable for use as a cement additive or a mineral admixture in concrete. Further studies on the combustion status of the CFBC boilers are needed if we want to be able to increase the desulfurization rate and produce high-quality fly ashes for broader and full utilization. 22 refs., 4 figs., 4 tabs.

Feihu Li; Jianping Zhai; Xiaoru Fu; Guanghong Sheng [Nanjing University, Nanjing (China). State Key Laboratory of Pollution Control & Resource Reuse, School of the Environment

2006-08-15T23:59:59.000Z

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Evaluation of cement production using a pressurized fluidized-bed combustor  

SciTech Connect (OSTI)

There are several primary conclusions which can be reached and used to define research required in establishing the feasibility of using PFBC-derived materials as cement feedstock. 1. With appropriate blending almost any material containing the required cement-making materials can be utilized to manufacture cement. However, extensive blending with multiple materials or the use of ash in relatively small quantities would compromise the worth of this concept. 2. The composition of a potential feedstock must be considered not only with respect to the presence of required materials, but just as significantly, with respect to the presence and concentration of known deleterious materials. 3. The processing costs for rendering the feedstock into an acceptable composition and the energy costs associated with both processing and burning must be considered. It should be noted that the cost of energy to produce cement, expressed as a percentage of the price of the product is higher than for any other major industrial product. Energy consumption is, therefore, a major issue. 4. The need for conformance to environmental regulations has a profound effect on the cement industry since waste materials can neither be discharged to the atmosphere or be shipped to a landfill. 5. Fifth, the need for achieving uniformity in the composition of the cement is critical to controlling its quality. Unfortunately, certain materials in very small concentrations have the capability to affect the rate and extent to which the cementitious compound in portland cement are able to form. Particularly critical are variations in the ash, the sulfur content of the coal or the amount and composition of the stack dust returned to the kiln.

DeLallo, M.; Eshbach, R.

1994-01-01T23:59:59.000Z

102

ASH EMISSIVITY CHARACTERIZATION AND PREDICTION  

SciTech Connect (OSTI)

The increased use of western subbituminous coals has generated concerns regarding highly reflective ash disrupting heat transfer in the radiant zone of pulverized-fuel boilers. Ash emissivity and reflectivity is primarily a function of ash particle size, with reflective deposits expected to consist of very small refractory ash materials such as CaO, MgO, or sulfate materials such as Na{sub 2}SO{sub 4}. For biomass fuels and biomass-coal blends, similar reflectivity issues may arise as a result of the presence of abundant organically associated calcium and potassium, which can transform during combustion to fine calcium, and potassium oxides and sulfates, which may act as reflective ash. The relationship of reflectivity to ash chemistry is a second-order effect, with the ash particle size distribution and melting point being determined by the size and chemistry of the minerals present in the starting fuel. Measurement of the emission properties of ash and deposits have been performed by several research groups (1-6) using both laboratory methods and measurements in pilot- and full-scale combustion systems. A review of the properties and thermal properties of ash stresses the important effect of ash deposits on heat transfer in the radiant boiler zone (1).

Christopher J. Zygarlicke; Donald P. McCollor; Charlene R. Crocker

1999-12-01T23:59:59.000Z

103

MECS 2006 - Cement | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

and supporting documents Manufacturing Energy and Carbon Footprint Cement More Documents & Publications Cement (2010 MECS) MECS 2006 - Glass Glass and Glass Products (2010 MECS)...

104

Modeling volcanic ash dispersal  

ScienceCinema (OSTI)

Explosive volcanic eruptions inject into the atmosphere large amounts of volcanic material (ash, blocks and lapilli). Blocks and larger lapilli follow ballistic and non-ballistic trajectories and fall rapidly close to the volcano. In contrast, very fine ashes can remain entrapped in the atmosphere for months to years, and may affect the global climate in the case of large eruptions. Particles having sizes between these two end-members remain airborne from hours to days and can cover wide areas downwind. Such volcanic fallout entails a serious threat to aircraft safety and can create many undesirable effects to the communities located around the volcano. The assessment of volcanic fallout hazard is an important scientific, economic, and political issue, especially in densely populated areas. From a scientific point of view, considerable progress has been made during the last two decades through the use of increasingly powerful computational models and capabilities. Nowadays, models are used to quantify hazard scenarios and/or to give short-term forecasts during emergency situations. This talk will be focused on the main aspects related to modeling volcanic ash dispersal and fallout with application to the well known problem created by the Eyjafjöll volcano in Iceland. Moreover, a short description of the main volcanic monitoring techniques is presented.

None

2011-10-06T23:59:59.000Z

105

E-Print Network 3.0 - ash bottom ash Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: of bottom ash, 3 million tons of boiler slag, and 28 million tons of clean-coal ash materials) were produced... CONTAINING CLEAN-COAL ASH AND CLASS F FLY ASH By...

106

Comparing properties of coal ash and alternative-fuel ash  

Science Journals Connector (OSTI)

The results of investigating ash produced in burning alternative kinds of fuel are discussed. Its impact on the environment is evaluated, and possibilities of recovering it are studied.

E. P. Dick; G. A. Ryabov; A. N. Tugov; A. N. Soboleva

2007-03-01T23:59:59.000Z

107

The lime-soda sinter process for resource recovery from fly ash: A new look  

SciTech Connect (OSTI)

The lime-soda sinter process is one of the earliest and most thoroughly researched and evaluated of the several methods available for resource recovery from fly ash. The principle product, metallurgical grade alumina, is obtained with yields as high as 90% depending upon how much alumina needs to be left in the residue to form acceptable byproduct cement clinker. The process has the advantages of requiring a relatively low sintering temperature (1100-1200{degree}C), using conventional equipment of carbon steel construction, utilizing a variety of calcium and mineralizer raw materials, and producing only a single byproduct consisting of dicalcium silicate that has been shown to be an attractive raw material for the manufacture of portland cement. An economic feasibility study for a combined facility to produce alumina and cement from the fly ash generated by a 1000 MWe coal-fired power station shows a 10.5% return on average investment. This is increased to 14.2% when a disposal charge of $10/ton of fly ash consumed is credited to the process. Research has shown that the soda ash can be replaced by coal cleaning refuse or that the soda ash and one-fourth of the limestone can be replaced by FGD sludge with a savings in raw material cost in both cases. The return on average investment becomes 14.5% when the refuse is used and 15.2% when the sludge is used. The return could be increased further if an inexpensive fluxing agent were substituted for the alumina deliberately left in the residue. 12 refs., 2 figs., 7 tabs.

Burnet, G.

1991-01-01T23:59:59.000Z

108

Development of Artificial Ash Accelerated Accumulation Test ...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Artificial Ash Accelerated Accumulation Test Development of Artificial Ash Accelerated Accumulation Test Poster presented at the 16th Directions in Engine-Efficiency and Emissions...

109

Pontotoc Co. Greene Co. Hale Co. OAK GROVE C OAL D EGAS CEDAR COVE  

U.S. Energy Information Administration (EIA) Indexed Site

COAL D EGAS BLU E CREEK COAL DEGAS BR OOKWOOD C OAL D EGAS ST AR ROBIN SONS BEND COAL D EGAS BLU FF COR INNE MOU NDVILLE COAL D EGAS BLU EGU T CR EEK WH ITE OAK CREEK COAL DEGAS BEAVERT ON BLU FF FAYETTE W SN EAD S CREEK SPLU NGE PAR HAM N MUSGR OVE CR EEK MCCRAC KEN MOU NTAIN DAVIS C HAPEL BAC ON BLOOMING GROVE MT Z ION FAIRVIEW JASPER BLOWHORN CREEK MAPLE BRAN CH KEN NEDY COAL F IRE CR EEK MCGEE LAKE SILOAM MILLPOR T FERNBANK DAVIS C HAPEL NE DETROIT E BEANS F ERRY LEXIN GT ON PET ERSON COAL D EGAS CALEDONIA ABERD EEN HOL T COAL D EGAS MULDON ELD RIDGE MCKINLEY CREEK TREBLOC HEARTLIN E SH ANNON TROY_MS_D BOXES CREEK WISE GAP NOR THSID E TREMONT VAN VLEET HOL LY BET HEL CHU RCH ABERD EEN S ST RONG BAN KST ON MOLLOY WR EN COR INTH WELLS THORN REID REID HOU STON ST AR DEERLICK CREEK COAL D EGAS OAK GROVE COAL D EGAS BIG SANDY CREEK COAL D EGAS MABEN LITT LE SAND Y CREEK COAL D

110

Pontotoc Co. Greene Co. Hale Co. OAK GROVE C OAL D EGAS CEDAR COVE COAL DEGAS  

U.S. Energy Information Administration (EIA) Indexed Site

COAL DEGAS COAL DEGAS BLU E CREEK COAL DEGAS BR OOKWOOD C OAL D EGAS ST AR ROBIN SONS BEND COAL DEGAS BLU FF COR INNE MOU NDVILLE COAL DEGAS BLU EGU T CR EEK WH ITE OAK CREEK COAL DEGAS BEAVERT ON BLU FF FAYETTE W SN EAD S CREEK SPLU NGE PAR HAM N MUSGR OVE CR EEK MCCRAC KEN MOU NTAIN DAVIS C HAPEL BAC ON BLOOMING GROVE MT Z ION FAIRVIEW JASPER BLOWHORN CREEK MAPLE BRAN CH KEN NEDY COAL F IRE CR EEK MCGEE LAKE SILOAM MILLPOR T FERNBANK DAVIS C HAPEL NE DETROIT E BEANS F ERRY LEXIN GT ON PET ERSON COAL DEGAS CALEDONIA ABERD EEN HOL T COAL DEGAS MULDON ELD RIDGE MCKINLEY CREEK TREBLOC HEARTLIN E SH ANNON TROY_MS_D BOXES CREEK WISE GAP NOR THSID E TREMONT VAN VLEET HOL LY BET HEL CHU RCH ABERD EEN S ST RONG BAN KST ON MOLLOY WR EN COR INT H WELLS THORN REID REID HOU STON ST AR DEERLICK CR EEK C OAL DEGAS OAK GROVE C OAL D EGAS BIG SANDY C REEK COAL D EGAS MABEN LITT LE SAND Y CREEK COAL DEGAS

111

Permeability of consolidated incinerator facility wastes stabilized with portland cement  

SciTech Connect (OSTI)

The Consolidated Incinerator Facility (CIF) at the Savannah River Site (SRS) burns low-level radioactive wastes and mixed wastes as a method of treatment and volume reduction. The CIF generates secondary waste, which consists of ash and offgas scrubber solution. Currently the ash is stabilized/solidified in the Ashcrete process. The scrubber solution (blowdown) is sent to the SRS Effluent Treatment Facility (ETF) for treatment as wastewater. In the past, the scrubber solution was also stabilized/solidified in the Ashcrete process as blowcrete, and will continue to be treated this way for listed waste burns and scrubber solutions that do not meet the ETF Waste Acceptance Criteria (WAC). The disposal plan for Ashcrete and special case blowcrete is to bury these containerized waste forms in shallow unlined trenches in E-Area. The WAC for intimately mixed, cement-based wasteforms intended for direct disposal specifies limits on compressive strength and permeability. Simulated waste and actual CIF ash and scrubber solution were mixed in the laboratory and cast into wasteforms for testing. Test results and related waste disposal consequences are given in this report.

Walker, B.W.

2000-04-19T23:59:59.000Z

112

Prickly Ash and Prickly Pear  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Prickly Ash and Prickly Pear Prickly Ash and Prickly Pear Nature Bulletin No. 649-A October 1, 1977 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation PRICKLY ASH AND PRICKLY PEAR In the plant kingdom, as among people, there are so-me that we avoid. They have few virtues, if any, and our experiences with them are painful or have unpleasant after effects. Poison ivy is a notorious example. Prickly Ash, a shrub, is another. Although not poisonous it is thickly armed with wicked thorns and has no ornamental, economic or wildlife value. In 1821 when the first section lines were established in Cook County, the surveyor recorded -- for the benefit of land buyers -- the principal kinds of trees and other vegetation observed along each mile. He frequently encountered prickly ash in thickets near the Little Calumet River and also the north and south branches of the Chicago River.

113

Unique method of ash disposal can benefit marine life  

SciTech Connect (OSTI)

As more communities turn to waste-to-energy facilities to help solve their solid waste disposal problems, the amount of ash created by these facilities increases. Incineration of solid waste produces particulate residues which are often rich in lead, cadmium, copper, and zinc because of the concentration which occurs as a result of reduction. It has been shown that such metals can sometimes be leached from ash residues, giving rise to special concerns that incineration ashes be disposed of in an environmentally acceptable manner. In urban coastal areas where landfills are few and increasingly distant, ocean disposal of stabilized incineration residues (SIR) may provide an acceptable alternative to current landfill practices. In May 1985, a research program was initiated at the Marine Sciences Research Center to examine the feasibility of utilizing SIR for artificial reef construction in the ocean. Results of these studies showed that particulate incineration residues could be combined with cement to form a solid block possessing physical properties necessary for ocean disposal. The stabilized residues were subjected to regulatory extraction protocols, and in no instance did the metal concentrations in the leachates exceed the regulatory limits for toxicity. Bioassays revealed no adverse effects on the phytoplankton communities exposed to elutriate concentrations higher than could be encountered under normal disposal conditions. The success of the laboratory studies resulted in securing the necessary permits for the placement of an artificial habitat constructed using SIR in coastal wasters. Results from this program are described.

Roethel, F.J.; Breslin, V.T. (State Univ. of New York, Stony Brook (USA))

1988-10-01T23:59:59.000Z

114

China's Cement Production:  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Estimation of CO Estimation of CO 2 Emissions from China's Cement Production: Methodologies and Uncertainties Jing Ke, Michael McNeil, Lynn Price, Nina Zheng Khanna, Nan Zhou Environmental Energy Technologies Division Lawrence Berkeley National Laboratory Reprint version of journal article published in "Energy Policy", Volume 57, Pages 172-181, June 2013 January 2013 This work was supported by the China Sustainable Energy Program of the Energy Foundation through the U.S. Department of Energy under Contract No. DE-AC02- 05CH11231. ERNEST ORLANDO LAWRENCE BERKELEY NATIONAL LABORATORY LBNL-6329E Disclaimer This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any

115

Design of High Viscosity Cement Gun for Vertebroplasty:.  

E-Print Network [OSTI]

??Vertebroplasty is a minimally invasive procedure for treating spine. Cement leakage is problem occurring from usage of low viscosity bone cements. High viscosity bone cements… (more)

Gupta, P.

2011-01-01T23:59:59.000Z

116

Guidebook for Using the Tool BEST Cement: Benchmarking and Energy Savings Tool for the Cement Industry  

E-Print Network [OSTI]

the production costs of all waste- burning cement kilns, andthree cement plants are burning waste fuels. Beijing Cementof waste; the plant is burning solid waste from the chemical

Galitsky, Christina

2009-01-01T23:59:59.000Z

117

Gujarat Ambuja Cements Limited | Open Energy Information  

Open Energy Info (EERE)

Ambuja Cements Limited Ambuja Cements Limited Jump to: navigation, search Name Gujarat Ambuja Cements Limited Place Mumbai, India Zip 400 021 Sector Biomass Product Indian cement company. the company installed a 24MW biomass based captive electric generating stations that will provide electricity to Gujarat Ambuja Cements Limitedâ€(tm)s (“GACL”) facility in Ropar, Punjab. References Gujarat Ambuja Cements Limited[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Gujarat Ambuja Cements Limited is a company located in Mumbai, India . References ↑ "Gujarat Ambuja Cements Limited" Retrieved from "http://en.openei.org/w/index.php?title=Gujarat_Ambuja_Cements_Limited&oldid=346290

118

Simulation of Coal Ash Particle Deposition Experiments  

Science Journals Connector (OSTI)

Simulation of Coal Ash Particle Deposition Experiments† ... Ichikawa et al.(7) measured deposition behavior for ash particles from ashing tests for a series of five coals, using a nominally 1 m tall × 60 mm diameter ash-heating tube that was fitted with a cooled, temperature-controlled particle impact probe oriented at a 30° angle to the atmospheric pressure air flow. ...

Weiguo Ai; John M. Kuhlman

2011-01-20T23:59:59.000Z

119

Insurance coverage for coal ash liabilities  

SciTech Connect (OSTI)

The paper discusses how liability insurance can be a valuable tool for limiting coal ash liabilities.

Elkind, D.L. [Dickstein Shapiro LLP (United States)

2009-07-01T23:59:59.000Z

120

Effect of Coal Ash Composition on Ash Fusion Temperatures  

Science Journals Connector (OSTI)

Experiments have been conducted in which mixtures of selected coal ashes and SiO2, Al2O3, CaO, Fe2O3, and MgO were subjected to the standard test for ash fusibility. ... One property that specifically gives detail information on the suitability of a coal source [Alpern, B., Nahuys, J., Martinez, L. Mineral matter in ashy and non-washable coals-its influence on chem. ...

Wen J. Song; Li H. Tang; Xue D. Zhu; Yong Q. Wu; Zi B. Zhu; Shuntarou Koyama

2009-08-11T23:59:59.000Z

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Supplement Analysis for the Transmission System Vegetation Management Program FEIS (DOE/EIS-0285/SA- 129) Ashe-Marion #2 [Mile 150-157]  

Broader source: Energy.gov (indexed) [DOE]

7, 2003 7, 2003 REPLY TO ATTN OF: KEP-4 SUBJECT: Supplement Analysis for the Transmission System Vegetation Management Program FEIS (DOE/EIS-0285/SA- 129 Ashe-Marion #2 [Mile 150-157] Elizabeth Johnson Natural Resource Specialist- TFR/The Dalles Proposed Action: Vegetation Management for the Ashe-Marion #2 500 kV transmission line from structure 150/2 through structure 157/7 (reference line). The Buckley-Marion #1 transmission line is also present within the proposed corridor. Right of way width averages 135 feet. Location: The project location is within Wasco County, Oregon near the city of Pine Grove, and is within the Redmond Region. Proposed by: Bonneville Power Administration (BPA). Description of the Proposal: BPA proposes to remove unwanted vegetation along the right-of-

122

Microsoft Word - CX-ForestGrove-McMinnvilleWoodPolesFY12_WEB.docx  

Broader source: Energy.gov (indexed) [DOE]

5, 2012 5, 2012 REPLY TO ATTN OF: KEP-Alvey SUBJECT: Environmental Clearance Memorandum James Semrau Project Manager - TEP-TPP-1 Proposed Action: Forest Grove-McMinnville #1 Wood Pole Replacement Projects PP&A Project No.: 2326 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B1.3 Routine maintenance Proposed by: Bonneville Power Administration (BPA) Location: The project is located in Washington and Yamhill counties, Oregon, in BPA's Salem District. Structure locations are as follows: Structure Legal Description County, State 2\5 1S, 3W, Sec. 6 Washington, OR 3\3 1S, 3W, Sec. 7 Washington, OR 3\6, 4\3 1S. 4W, Sec. 12 Washington, OR 4\8, 4\9, 5\3 1S, 4W, Sec. 14 Washington, OR 6\2, 6\5 1S, 4W, Sec. 23 Washington, OR

123

DOE Challenge Home Case Study, Weiss Building & Development, LLC., Custom Home, Downer Grove, IL  

Broader source: Energy.gov (indexed) [DOE]

LLC LLC Custom Home Downers Grove, IL BUILDING TECHNOLOGIES OFFICE DOE Challenge Home builders are in the top 1% of builders in the country meeting the extraordinary levels of excellence and quality specifi ed by the U.S. Department of Energy. Every DOE Challenge Home starts with ENERGY STAR for Homes Version 3 for an energy-effi cient home built on a solid foundation of building science research. Then, even more advanced technologies are designed in for a home that goes above and beyond current code to give you the superior quality construction, HVAC, appliances, indoor air quality, safety, durability, comfort, and solar-ready components along with ultra-low or no utility bills. This provides homeowners with a quality home that will last for generations to come.

124

Subsurface models of coal occurrence, Oak Grove field, Black Warrior basin, Alabama  

SciTech Connect (OSTI)

Subsurface investigation of coal occurrence in the Black Creek-Cobb interval of Oak Grove field is based on cross sections and isopach maps made from more than 500 density logs. This study was designed to identify styles of coal occurrence in the Black Warrior basin to aid in coalbed-methane exploration and production. Coal occurrence in parts of the Black Warrior basin may be characterized in terms of end-member fluvial and structural control. Fluvial processes apparently were the major controls on coal occurrence in the Black Creek cycle, where sandstone and coal thickness are inversely related. Additionally, occurrence of thick sandstone sequences above the thickest coal beds suggests that peat compaction provided sites for channel avulsion. In the Mary Lee and Cobb cycles, more coal beds occur in a downthrown fault block than in an upthrown block, and in the Pratt and Cobb cycles, the thickest coal beds occur on the downthrown side of a fault. Only in the Mary Lee cycle, where thick peat accumulated in an abandoned tributary system, is coal thickest on the upthrown block. Most coal beds in Oak Grove field are thickest on the downthrown block because differential subsidence apparently promoted peat accumulation. Clastic influx favors beds splits in the downthrown block, but joining of beds in the Pratt cycle may reflect sheltering by the fault. In the Mary Lee cycle, in contrast, channel incision evidently provided local relief sufficient for thick peat to accumulate in lows on the upthrown block. Although fluvial and structural processes result in varied styles of coal occurrence, models of coal occurrence have resulted in a predictive framework that may aid in strategic well siting and completion.

Pashin, J.C. (Geological Survey of Alabama, Tuscaloosa (United States))

1991-03-01T23:59:59.000Z

125

Moon Dust and Coal Ash  

Science Journals Connector (OSTI)

... struck by the similarity between the preliminary descriptions of moon dust and that of the ash residue collected from pulverized ... residue collected from pulverized coal-fired boilers (that is, pulverized fuel ...

A. B. HART; E. RAASK

1969-08-16T23:59:59.000Z

126

Sustainable Use of Biofuel by Recycling Ash to Forests:? Treatment of Biofuel Ash  

Science Journals Connector (OSTI)

Sustainable Use of Biofuel by Recycling Ash to Forests:? Treatment of Biofuel Ash ... Ash samples from combustion of biofuels in a circulating fluidized bed and grate-firing combustion plants are studied. ...

Maryam Mahmoudkhani; Tobias Richards; Hans Theliander

2007-04-26T23:59:59.000Z

127

Cast-Concrete Products Made with FBC Ash and Wet-Collected Coal-Ash  

E-Print Network [OSTI]

. DOI: 10.1061/ ASCE 0899-1561 2005 17:6 659 CE Database subject headings: Recycling; Ashes; Concrete et al. 1991 . Fluidized bed combustion FBC ash is the ash produced by an FBC boiler in which the coal

Wisconsin-Milwaukee, University of

128

Long duration ash probe  

DOE Patents [OSTI]

A long duration ash probe includes a pressure shell connected to a port in a combustor with a sample coupon mounted on a retractable carriage so as to retract the sample coupon within the pressure shell during sootblowing operation of the combustor. A valve mounted at the forward end of the pressure shell is selectively closeable to seal the sample coupon within the shell, and a heating element in the shell is operable to maintain the desired temperature of the sample coupon while retracted within the shell. The carriage is operably mounted on a pair of rails within the shell for longitudinal movement within the shell. A hollow carrier tube connects the hollow cylindrical sample coupon to the carriage, and extends through the carriage and out the rearward end thereof. Air lines are connected to the rearward end of the carrier tube and are operable to permit coolant to pass through the air lines and thence through the carrier tube to the sample coupon so as to cool the sample coupon.

Hurley, John P. (Grand Forks, ND); McCollor, Don P. (Grand Forks, ND); Selle, Stanley J. (Grand Forks, MN)

1994-01-01T23:59:59.000Z

129

Long duration ash probe  

DOE Patents [OSTI]

A long duration ash probe includes a pressure shell connected to a port in a combustor with a sample coupon mounted on a retractable carriage so as to retract the sample coupon within the pressure shell during soot blowing operation of the combustor. A valve mounted at the forward end of the pressure shell is selectively closeable to seal the sample coupon within the shell, and a heating element in the shell is operable to maintain the desired temperature of the sample coupon while retracted within the shell. The carriage is operably mounted on a pair of rails within the shell for longitudinal movement within the shell. A hollow carrier tube connects the hollow cylindrical sample coupon to the carriage, and extends through the carriage and out the rearward end thereof. Air lines are connected to the rearward end of the carrier tube and are operable to permit coolant to pass through the air lines and thence through the carrier tube to the sample coupon so as to cool the sample coupon. 8 figs.

Hurley, J.P.; McCollor, D.P.; Selle, S.J.

1994-07-26T23:59:59.000Z

130

New Strong Cement Materials: Chemically Bonded Ceramics  

Science Journals Connector (OSTI)

...specimens (58-60). The crystalline cement mineral tobermorite...has developed a cement waste form in which a slurry ofcement...additives is mixed with a waste solution. The "grout...Scintific Basr for Nuclear Waste Mangement VIII, vol...

DELLA M. ROY

1987-02-06T23:59:59.000Z

131

Glass Fibre Reinforced Cement and Gypsum Products  

Science Journals Connector (OSTI)

6 October 1970 research-article Glass Fibre Reinforced Cement and Gypsum Products A. J. Majumdar Glass fibre reinforced cements and gypsum plaster...discontinuous and irregular. The dispersion of glass fibre in the matrix is not easy. When chopped...

1970-01-01T23:59:59.000Z

132

Exergy analysis of cement production  

Science Journals Connector (OSTI)

In the present paper, cement production in Greece has been examined using the exergy analysis methodology. The major goal of the modern cement and concrete production industry is the minimisation of energy costs and environmental effects. The rational management of raw materials and energy requires analytical decision making tools that will provide the necessary information for the identification of possible improvements in the life cycle of a product. The second law of Thermodynamics allows for the evaluation of the irreversibility and the exergetic performance of a process. The analysis involves assessment of energy and exergy input at each stage of the cement production process. The chemical exergy of the reaction is also calculated and taken into consideration. It is found that 50% of the exergy is being lost even though a big amount of waste heat is being recovered.

C. Koroneos; G. Roumbas; N. Moussiopoulos

2005-01-01T23:59:59.000Z

133

Presented at the 2002 ACEEE Summer Study on Energy Efficiency in Buildings, August 18-23, 2002, Asilomar Conference Center, Pacific Grove, California, and published in the proceedings.  

E-Print Network [OSTI]

, August 18-23, 2002, Asilomar Conference Center, Pacific Grove, California, and published in the proceedings. This work was supported by the Assistant Secretary for Energy Efficiency and Renewable Energy

134

Cement advanced furnace and process  

SciTech Connect (OSTI)

This patent describes a suspension shaft furnace for producing discrete cement clinkers from discrete pellets of cement-forming batch materials which are gravity-migrated therethrough. It comprises a vertical furnace housing enclosing a top pellet-feeding and preheating zone comprising an elongate vertical shaft section opening into an intermediate fluidized bed section comprising fuel inlet conduits, an air-permeable clinker-impermeable support; a lower clinker-cooling section beneath the fluidized bed section; clinker-discharge means communicating between the fluidized bed section and the cooling section and air inlet means.

Litka, A.F.; Cohen, S.M.

1992-06-02T23:59:59.000Z

135

Fly ash chemical classification based on lime  

SciTech Connect (OSTI)

Typically, total lime content (CaO) of fly ash is shown in fly ash reports, but its significance is not addressed in US specifications. For certain applications a low lime ash is preferred. When a class C fly ash must be cementitious, lime content above 20% is required. A ternary S-A-C phase diagram pilot is given showing the location of fly ash compositions by coal rank and source in North America. Fly ashes from subbituminous coal from the Powder River Basin usually contain sufficient lime to be cementitious but blending with other coals may result in calcium being present in phases other than tricalcium aluminate. 9 refs., 1 fig.

Fox, J. [BASF Construction Chemicals, LLC (United States)

2007-07-01T23:59:59.000Z

136

Energy Efficiency Improvement Opportunities for the Cement Industry  

E-Print Network [OSTI]

like blast furnace slag, fly ash, coal gangue, limestone,Blast Furnace Slag Fly ash Cinder Coal gangue Lime- stone

Worrell, Ernst

2008-01-01T23:59:59.000Z

137

Cementing temperatures for deep-well production liners  

SciTech Connect (OSTI)

Temperature of cement is an important factor in properly cementing deep well production liners, yet current methods of determining cement temperatures do not account for all variables. In this paper a computer model predicts temperatures of cement while pumping and while waiting on cement, compares computed and measured temperatures, defines the importance of certain cementing variables on temperatures, and provides an explanation of difficulties encountered while cementing liner tops.

Wooley, G.R.; Galate, J.W.; Giussani, A.P.

1984-09-01T23:59:59.000Z

138

An investigation of radon exhalation rate and estimation of radiation doses in coal and fly ash samples  

Science Journals Connector (OSTI)

Coal is a technologically important material used for power generation. Its cinder (fly ash) is used in the manufacturing of bricks, sheets, cement, land filling etc. Coal and its by-products often contain significant amounts of radionuclides, including uranium which is the ultimate source of the radioactive gas radon. Burning of coal and the subsequent atmospheric emission cause the redistribution of toxic radioactive trace elements in the environment. In the present study, radon exhalation rates in coal and fly ash samples from the thermal power plants at Kolaghat (W.B.) and Kasimpur (U.P.) have been measured using sealed Can technique having LR-115 type II detectors. The activity concentrations of 238U, 232Th, and 40K in the samples of Kolaghat power station are also measured. It is observed that the radon exhalation rate from fly ash samples from Kolaghat is higher than from coal samples and activity concentration of radionuclides in fly ash is enhanced after the combustion of coal. Fly ash samples from Kasimpur show no appreciable change in radon exhalation. Radiation doses from the fly ash samples have been estimated from radon exhalation rate and radionuclide concentrations.

A.K. Mahur; Rajesh Kumar; Meena Mishra; D. Sengupta; Rajendra Prasad

2008-01-01T23:59:59.000Z

139

Leaching of boron from coal ash  

Science Journals Connector (OSTI)

Leaching of boron from coal ash ... First High-Resolution 11B Nuclear Magnetic Resonance (NMR) Spectra of Coal Fly Ash by Satellite-Transition Magic Angle Spinning (STMAS) NMR ... First High-Resolution 11B Nuclear Magnetic Resonance (NMR) Spectra of Coal Fly Ash by Satellite-Transition Magic Angle Spinning (STMAS) NMR ...

James A. Cox; Gary L. Lundquist; Andrzej Przyjazny; C. David Schmulbach

1978-06-01T23:59:59.000Z

140

Pollen Influx and Volcanic Ash  

Science Journals Connector (OSTI)

...Artemisia) blooms in the fall and a dis-proportionate percentage...were recorded. The five pollen groups plotted in Fig. 5 were selected...expected to occur during the fall and perhaps winter months...probability of an initial ash-fall in late summer. Certain acid-resist-ant...

Peter J. Mehringer Jr.; Eric Blinman; Kenneth L. Petersen

1977-10-21T23:59:59.000Z

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Coal Ash and Clean Coal  

Science Journals Connector (OSTI)

... IT is the normal view that the incombustible part of coal is not only a useless but even objectionable diluent. At times in the past, ... , familiar with the theory of contact catalysis of gas reactions, have speculated that the ash constituents might well play an active role in the processes of carbonisation and combustion. ...

H. J. HODSMAN

1926-09-04T23:59:59.000Z

142

Petrographic characterization of economizer fly ash  

SciTech Connect (OSTI)

Policies for reducing NOx emissions have led power plants to restrict O{sub 2}, resulting in high-carbon fly ash production. Therefore, some potentially useful fly ash, such as the economizer fly ash, is discarded without a thorough knowledge of its composition. In order to characterize this type of fly ash, samples were collected from the economizer Portuguese power plant burning two low-sulfur bituminous coals. Characterization was also performed on economizer fly ash subsamples after wet sieving, density and magnetic separation. Analysis included atomic absorption spectroscopy, loss-on-ignition, scanning electron microscopy/energy-dispersive X-ray spectroscopy, optical microscopy, and micro-Raman spectroscopy.

Valentim, B.; Hower, J.C.; Soares, S.; Guedes, A.; Garcia, C.; Flores, D.; Oliveira, A. [University of Porto, Oporto (Portugal). Center of Geology

2009-11-15T23:59:59.000Z

143

Definition: Cement Bond Log | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Cement Bond Log Jump to: navigation, search Dictionary.png Cement Bond Log A representation of the integrity of the cement job, especially whether the cement is adhering solidly to the outside of the casing. The log is typically obtained from one of a variety of sonic-type tools. The newer versions, called cement evaluation logs, along with their processing software, can give detailed, 360-degree representations of the integrity of the cement job, whereas older versions may display a single line representing the integrated integrity around the casing.[1] Related Terms Acoustic Logs References ↑ Schlumberger Oilfield Glossary Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like.

144

HYDRAULIC CEMENT PREPARATION FROM LURGI SPENT SHALE  

SciTech Connect (OSTI)

Low cost material is needed for grouting abandoned retorts. Experimental work has shown that a hydraulic cement can be produced from Lurgi spent shale by mixing it in a 1:1 weight ratio with limestone and heating one hour at 1000°C. With 5% added gypsum, strengths up to 25.8 MPa are obtained. This cement could make an economical addition up to about 10% to spent shale grout mixes, or be used in ordinary cement applications.

Mehta, P.K.; Persoff, P.; Fox, J.P.

1980-06-01T23:59:59.000Z

145

Relationship Between Engineering Properties, Mineralogy, and Microstructure in Cement-Based Hydroceramic Materials Cured at  

E-Print Network [OSTI]

. I. Introduction CEMENT is universally used in the construction of oil and geothermal wells. Cement

Bentz, Dale P.

146

INVESTIGATIONS ON HYDRAULIC CEMENTS FROM SPENT OIL SHALE  

E-Print Network [OSTI]

CEMENTS FROM SPENT OIL SHALE P.K. Mehta and P. Persoff AprilCement Manufacture from Oil Shale, U.S. Patent 2,904,445,CEMENTS FROM SPENT OIL SHALE P, K, Mehta Civil Engineering

Mehta, P.K.

2012-01-01T23:59:59.000Z

147

Ultrasonic ash/pyrite liberation  

SciTech Connect (OSTI)

The objective of this project was to develop a coal preparation concept which employed ultrasonics to precondition coal prior to conventional or advanced physical beneficiation processes such that ash and pyrite separation were enhanced with improved combustible recovery. Research activities involved a series of experiments that subjected three different test coals, Illinois No. 6, Pittsburgh No. 8, and Upper Freeport, ground to three different size fractions (28 mesh [times] 0, 200 mesh [times] 0, and 325 mesh [times] 0), to a fixed (20 kHz) frequency ultrasonic signal prior to processing by conventional and microbubble flotation. The samples were also processed by conventional and microbubble flotation without ultrasonic pretreatment to establish baseline conditions. Product ash, sulfur and combustible recovery data were determined for both beneficiation processes.

Yungman, B.A.; Buban, K.S.; Stotts, W.F.

1990-06-01T23:59:59.000Z

148

The fluidized bed combustion ash management puzzle  

SciTech Connect (OSTI)

As the electric and industrial power generation industry upgrades and expands, the amount of coal and other solid fuels also expands. With increased environmental controls, the introduction of a competitive market for power, and the increased interest in opportunity fuels will increase the usage of Fluidized Bed Combustion (FBC) boilers in the power industry. The combustion of these solid fuels will generate combustion ashes. Power generators, including FBC boilers owners, have traditionally looked to landfills for the disposal of their ash. With the tighter environmental controls being placed on landfills at the federal and state level, power generators are beginning to see constantly escalating tipping fees which now make the landfill option less attractive. In some instances, landfills are beginning to refuse to accept ash regardless of the tipping fee. In view of this, the power generators are now struggling to find a place to store or dispose of the ash that is produced by their power boiler. Other disposal alternatives such as backhaul to the mine and beneficial reuse are now being considered. Either alternative presents its own set of technical and environmental variables to be considered in developing an effective ash management plan. To be effective, these plans need to incorporate an aggressive, yet realistic, role to support beneficial reuse of the ash. Many applications exist for reuse of the various types of ash. The applications for conventional ashes such as those from pulverized coal boilers and stoker fired boilers are mature and more commonplace. The uses for FBC ash are not as well researched and demonstrated and therefore the marketing opportunities for FBC ash continue to require development. FBC boiler owners and operators must be willing to accept the challenges posed in developing these reuse applications for FBC ash for the market to accept the applications for FBC ash and allow the full value of the FBC ash to be realized.

Fitzgerald, H.B. [ReUse Technology, Inc., Kennesaw, GA (United States)

1996-12-31T23:59:59.000Z

149

Characterization and modeling of the cemented sediment surrounding...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

modeling of the cemented sediment surrounding the Iulia Felix glass. Characterization and modeling of the cemented sediment surrounding the Iulia Felix glass. Abstract: About 1800...

150

Energy Efficiency Improvement Opportunities for the Cement Industry  

E-Print Network [OSTI]

flash distillation waste heat power generation demonstrationAdvanced Concepts of Waste Heat Recovery in Cement PlantsCement Ltd. also installed waste heat recovery equipment on

Worrell, Ernst

2008-01-01T23:59:59.000Z

151

Volcanic ash impacts on critical infrastructure  

Science Journals Connector (OSTI)

Volcanic eruptions can produce a wide range of hazards. Although phenomena such as pyroclastic flows and surges, sector collapses, lahars and ballistic blocks are the most destructive and dangerous, volcanic ash is by far the most widely distributed eruption product. Although ash falls rarely endanger human life directly, threats to public health and disruption to critical infrastructure services, aviation and primary production can lead to significant societal impacts. Even relatively small eruptions can cause widespread disruption, damage and economic loss. Volcanic eruptions are, in general, infrequent and somewhat exotic occurrences, and consequently in many parts of the world, the management of critical infrastructure during volcanic crises can be improved with greater knowledge of the likely impacts. This article presents an overview of volcanic ash impacts on critical infrastructure, other than aviation and fuel supply, illustrated by findings from impact assessment reconnaissance trips carried out to a wide range of locations worldwide by our international research group and local collaborators. ‘Critical infrastructure’ includes those assets, frequently taken for granted, which are essential for the functioning of a society and economy. Electricity networks are very vulnerable to disruption from volcanic ash falls. This is particularly the case when fine ash is erupted because it has a greater tendency to adhere to line and substation insulators, where it can cause flashover (unintended electrical discharge) which can in turn cause widespread and disruptive outages. Weather conditions are a major determinant of flashover risk. Dry ash is not conductive, and heavy rain will wash ash from insulators, but light rain/mist will mobilise readily-soluble salts on the surface of the ash grains and lower the ash layer’s resistivity. Wet ash is also heavier than dry ash, increasing the risk of line breakage or tower/pole collapse. Particular issues for water supply managers include: monitoring turbidity levels in raw water intakes, and if necessary increasing chlorination to compensate for higher turbidity; managing water demand; and communicating monitoring results with the public to allay fears of contamination. Ash can cause major damage to wastewater disposal systems. Ash deposited onto impervious surfaces such as roads and car parks is very easily washed into storm drains, where it can form intractable masses and lead to long-term flooding problems. It can also enter wastewater treatment plants (WWTPs), both through sewer lines and by direct fallout. Damage to modern \\{WWTPs\\} can run into millions of dollars. Ash falls reduce visibility creating hazards for ground transportation. Dry ash is also readily remobilised by vehicle traffic and wind, and dry and wet ash deposits will reduce traction on paved surfaces, including airport runways. Ash cleanup from road and airports is commonly necessary, but the large volumes make it logistically challenging. Vehicles are vulnerable to ash; it will clog filters and brake systems and abrade moving parts within engines. Lastly, modern telecommunications networks appear to be relatively resilient to volcanic ash fall. Signal attenuation and interference during ash falls has not been reported in eruptions over the past 20 years, with the exception of interference from ash plume-generated lightning. However, some telecommunications equipment is vulnerable to airborne ash, in particular heating, ventilation and air-conditioning (HVAC) systems which may become blocked from ash ingestion leading to overheating. This summary of volcanic ash impacts on critical infrastructure provides insight into the relative vulnerability of infrastructure under a range of different ashfall scenarios. Identifying and quantifying these impacts is an essential step in building resilience within these critical systems. We have attempted to consider interdependencies between sectors in a holistic way using systems thinking. As modern society becomes increasingly complex and interdependent this

Thomas M. Wilson; Carol Stewart; Victoria Sword-Daniels; Graham S. Leonard; David M. Johnston; Jim W. Cole; Johnny Wardman; Grant Wilson; Scott T. Barnard

2012-01-01T23:59:59.000Z

152

COAL ASH RESOURCES RESEARCH CONSORTIUM  

SciTech Connect (OSTI)

The Coal Ash Resources Research Consortium (CARRC, pronounced ?cars?) is the core coal combustion by-product (CCB) research group at the Energy & Environmental Research Center (EERC). CARRC focuses on performing fundamental and applied scientific and engineering research emphasizing the environmentally safe, economical use of CCBs. CARRC member organizations, which include utilities and marketers, are key to developing industry-driven research in the area of CCB utilization and ensuring its successful application. CARRC continued the partnership of industry partners, university researchers, and the U.S. Department of Energy (DOE) addressing needs in the CCB industry through technical research and development projects. Technology transfer also continued through distribution and presentation of the results of research activities to appropriate audiences, with emphasis on reaching government agency representatives and end users of CCBs. CARRC partners have evolved technically and have jointly developed an understanding of the layers of social, regulatory, legal, and competition issues that impact the success of CCB utilization as applies to the CCB industry in general and to individual companies. Many CARRC tasks are designed to provide information on CCB performance including environmental performance, engineering performance, favorable economics, and improved life cycle of products and projects. CARRC activities from 1993?1998 included a variety of research tasks, with primary work performed in laboratory tasks developed to answer specific questions or evaluate important fundamental properties of CCBs. The tasks summarized in this report are 1) The Demonstration of CCB Use in Small Construction Projects, 2) Application of CCSEM (computer-controlled scanning electron microscopy) for Coal Combustion By-Product Characterization, 3) Development of a Procedure to Determine Heat of Hydration for Coal Combustion By-Products, 4) Investigation of the Behavior of High-Calcium Coal Combustion By-Products, 5) Development of an Environmentally Appropriate Leaching Procedure for Coal Combustion By-Products, 6) Set Time of Fly Ash Concrete, 7) Coal Ash Properties Database (CAPD), 8) Development of a Method for Determination of Radon Hazard in CCBs, 9) Development of Standards and Specifications, 10) Assessment of Fly Ash Variability, and 11) Development of a CCB Utilization Workshop. The primary goal of CARRC is to work with industry to solve CCB-related problems and promote the environmentally safe, technically sound, and economical utilization and disposal of these highly complex materials. CARRC 1993?1998 accomplishments included: C Updating the CAPD to a user-friendly database management system, and distributing it to CARRC members. C ASTM standard preparation for a guide to using CCBs as waste stabilization agents. C Preliminary identification of specific mineral transformations resulting from fly ash hydration. C Limited determination of the effects of fly ash on the set time of concrete. C Statistical evaluation of a select set of fly ashes from several regional coal-fired power plants. C Development and presentation of a workshop on CCB utilization focused on government agency representatives and interested parties with limited CCB utilization experience. C Participation in a variety of local, national, and international technical meetings, symposia, and conferences by presenting and publishing CCB-related papers.

NONE

1998-12-01T23:59:59.000Z

153

Fracture model for cemented aggregates  

DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

A mechanisms-based fracture model applicable to a broad class of cemented aggregates and, among them, plastic-bonded explosive (PBX) composites, is presented. The model is calibrated for PBX 9502 using the available experimental data under uniaxial compression and tension gathered at various strain rates and temperatures. We show that the model correctly captures inelastic stress-strain responses prior to the load peak and it predicts the post-critical macro-fracture processes, which result from the growth and coalescence of micro-cracks. In our approach, the fracture zone is embedded into elastic matrix and effectively weakens the material's strength along the plane of the dominant fracture.

Zubelewicz, Aleksander; Thompson, Darla G.; Ostoja-Starzewski, Martin; Ionita, Axinte; Shunk, Devin; Lewis, Matthew W.; Lawson, Joe C.; Kale, Sohan; Koric, Seid

2013-01-01T23:59:59.000Z

154

Characterization of ash cenospheres in fly ash from Australian power stations  

SciTech Connect (OSTI)

Ash cenospheres in fly ashes from five Australian power stations have been characterized. The experimental data show that ash cenosphere yield varies across the power stations. Ash partitioning occurred in the process of ash cenosphere formation during combustion. Contradictory to conclusions from the literature, iron does not seem to be essential to ash cenosphere formation in the cases examined in the present work. Further investigation was also undertaken on a series of size-fractioned ash cenosphere samples from Tarong power station. It is found that about 70 wt% of ash cenospheres in the bulk sample have sizes between 45 and 150 {mu}m. There are two different ash cenosphere structures, that is, single-ring structure and network structure. The percentage of ash cenospheres of a network structure increases with increasing ash cenosphere size. Small ash cenospheres (in the size fractions {lt}150 {mu}m) have a high SiO{sub 2}/Al{sub 2}O{sub 3} ratio, and the majority of the ash cenospheres are spherical and of a single-ring structure. Large ash cenosphere particles (in the size fractions of 150-250 {mu}m and {gt}250 {mu}m) have a low SiO{sub 2}/Al{sub 2}O{sub 3} ratio, and a high proportion of the ash cenospheres are nonspherical and of a network structure. A novel quantitative technique has been developed to measure the diameter and wall thickness of ash cenospheres on a particle-to-particle basis. A monolayer of size-fractioned ash cenospheres was dispersed on a pellet, which was then polished carefully before being examined using a scanning electron microscope and image analysis. The ash cenosphere wall thickness broadly increases with increasing ash cenosphere size. The ratios between wall thickness and diameter of ash cenospheres are limited between an upper bound of about 10.5% and a lower bound of about 2.5%, irrespective of the ash cenosphere size. 52 refs., 9 figs., 4 tabs.

Ling-ngee Ngu; Hongwei Wu; Dong-ke Zhang [Curtin University of Technology, Perth, WA (Australia). Centre for Fuels and Energy and Department of Chemical Engineering

2007-12-15T23:59:59.000Z

155

Treatment of fly ash for use in concrete  

DOE Patents [OSTI]

A process for treating fly ash to render it highly usable as a concrete additive. A quantity of fly ash is obtained that contains carbon and which is considered unusable fly ash for concrete based upon foam index testing. The fly ash is mixed with a quantity of spray dryer ash (SDA) and water to initiate a geopolymerization reaction and form a geopolymerized fly ash. The geopolymerized fly ash is granulated. The geopolymerized fly ash is considered usable fly ash for concrete according to foam index testing. The geopolymerized fly ash may have a foam index less than 40%, and in some cases less than 20%, of the foam index of the untreated fly ash. An optional alkaline activator may be mixed with the fly ash and SDA to facilitate the geopolymerization reaction. The alkaline activator may contain an alkali metal hydroxide, carbonate, silicate, aluminate, or mixtures thereof.

Boxley, Chett (Park City, UT)

2012-05-15T23:59:59.000Z

156

Application of Coal Fly Ash in Air Quality Management  

Science Journals Connector (OSTI)

Application of Coal Fly Ash in Air Quality Management ... It has been found from the literature that fly ash possesses potential application in the management of air quality. ... Application of Zeolite Synthesized from Fly Ash in Air Quality Management ...

M. Ahmaruzzaman; V.K Gupta

2012-11-05T23:59:59.000Z

157

Detailed Characterization of Lubricant-Derived Ash-Related Species...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Characterization of Lubricant-Derived Ash-Related Species in Diesel Exhaust and Aftertreatment Systems Detailed Characterization of Lubricant-Derived Ash-Related Species in Diesel...

158

The Development of a Small Engine Based Accelerated Ash Loading...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Accelerated Ash Loading Protocol The Development of a Small Engine Based Accelerated Ash Loading Protocol Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan....

159

Uncovering Fundamental Ash-Formation Mechanisms and Potential...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

illustrate ash particle growth and formation pathways, and influence of lubricant chemistry and exhaust conditions on fundamental ash properties deer12kamp.pdf More Documents...

160

Reducing Lubricant Ash Impact on Exhaust Aftertreatment with...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Lubricant Ash Impact on Exhaust Aftertreatment with a Oil Conditioning Filter Reducing Lubricant Ash Impact on Exhaust Aftertreatment with a Oil Conditioning Filter Under the test...

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Minimizing Lubricant-Ash Requirement and Impact on Emission Aftertreat...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Lubricant-Ash Requirement and Impact on Emission Aftertreatment Systems via an Oil Conditioning Filter Minimizing Lubricant-Ash Requirement and Impact on Emission...

162

Climate VISION: Private Sector Initiatives: Cement: Resources and Links -  

Office of Scientific and Technical Information (OSTI)

Industry Associations Industry Associations Portland Cement Association Since its founding in 1916, the Portland Cement Association has had the same mission: "Improve and expand the uses of portland cement and concrete." The Cement Sustainability Initiative Coordinated by the World Business Council for Sustainable Development, the Cement Sustainability Initiative (CSI) helps the cement industry address the challenges of sustainable development. The business leaders of a group of major cement companies lead the initiative. The GHG Protocol Initiative Coordinated in 1998 by the World Business Council for Sustainable Development and the World Resources Institute, the Greenhouse Gas Protocol Initiative (GHG Protocol) develops internationally-accepted accounting and reporting standards for greenhouse gas emissions from companies

163

Mechanical and Thermal Properties of Fly Ash-based Geopolymer Cement.  

E-Print Network [OSTI]

??The geopolymer concrete is a more durable and green material with less CO2 emission and less energy consuming as compared with the widely used Portland… (more)

Fan, Fenghong

2015-01-01T23:59:59.000Z

164

Ash-Based Building Panels Production and Demonstration of Aerock Decking Building Product  

SciTech Connect (OSTI)

Western Research Institute (WRI) of Laramie, Wyoming and AeRock, LLC of Eagar, Arizona (formerly of Bellevue, Washington) partnered, under sponsorship of the U.S. Department of Energy National Energy Technology Laboratory (U.S. DOE-NETL), to support the development of rapid-setting, ash-based, fiber-incorporated ''green'' building products. Green building materials are a rapidly growing trend in the building and construction industry in the US. A two phase project was implemented wherein Phase I assessed, through chemical and physical testing, ash, ash-based cement and fiber composites exhibiting superior structural performance when applied to the AeRock mixing and extrusion process and involved the conduct of pilot-scale production trials of AeRock products, and wherein Phase II involved the design, construction, and operation of a commercial-scale plant to confirm production issues and to produce panels for performance evaluations. Phase I optimized the composite ingredients including ash-based cement, Class F and Class C DFGD ash, and various fiber reinforcements. Additives, such as retardants and accelerators, were also evaluated as related to extruder performance. The optimized composite from the Phase I effort was characterized by a modulus of rupture (MOR) measured between 1,931 and 2,221 psi flexural strength, comparable to other wood and non-wood building materials. Continuous extrusion of the optimum composite in the AeRock pilot-scale facility produced an excellent product that was assembled into a demonstration for exhibit and durability purposes. Finishes, from plain to marbled, from bright reds to muted earth tones and with various textures, could easily be applied during the mixing and extrusion process. The successful pilot-scale demonstration was in turn used to design the production parameters and extruder dies for a commercial scale demonstration at Ultrapanel Pty, Ltd of Ballarat, Australia under Phase II. The initial commercial-scale production trials showed green product sagging, as a result of the die design. After the third die was acquired and fitted to the extruder, satisfactory decking and structural panels were produced. Cured decking was shipped to the US but experienced significant breakage and damage during transport. Subsequent evaluations concluded that an alternative die design was needed that would produce a more robust product resistant to damage. In summary, AeRock Decking can be a commercially-viable non-wood alternative decking product. This project has provided WRI and AeRock the knowledge and understanding to make AeRock Decking a commercial success. However, a commercial demonstration that produces quality product and the subsequent evaluation of its performance is needed before commercial acceptance of the AeRock product.

Alan E. Bland; Jesse Newcomer

2007-06-30T23:59:59.000Z

165

Assessment of halite-cemented reservoir zones  

SciTech Connect (OSTI)

This paper describes the techniques used to identify the presence and distribution of halite-cemented layers in a sandstone oil reservoir. The distribution of these layers in the wells was found by matching the core data with two independent halite identifiers from the well logs. Numerical well models were used to assess the dimensions and spatial distribution of the halite-cemented layers. Multiple simulation runs in which the spatial distribution, the dimensions, and the vertical permeability were varied resulted in a stochastic model that best matched the production history. Gas and water coning are retarded by the halite-cemented layers if the perforations are properly located.

Huurdeman, A.J.M.; Floris, F.J.T.; Lutgert, J.E. (TNO Inst. of Applied Geoscience (NL)); Breunese, J.N. (Geological Survey of the Netherlands (NL)); Al-Asbahl, A.M.S. (Ministry of Oil and Mineral Resources (YE))

1991-05-01T23:59:59.000Z

166

Utilization of Coal Ash As Recycling Material Options in View Point of Geoenvironment  

Science Journals Connector (OSTI)

Disposed coal ash is result from the residual of coal refinery processes and become environmentalimportant issues. Coal ash consists of bottom ash and fly ash. The number of coal ash production is abundant, and c...

Ahmad Rifa’I; Noriyuki Yasufuku; Kiyoshi Omine…

2010-01-01T23:59:59.000Z

167

Settlement of footing on compacted ash bed  

SciTech Connect (OSTI)

Compacted coal ash fills exhibit capillary stress due to contact moisture and preconsolidation stress due to the compaction process. As such, the conventional methods of estimating settlement of footing on cohesionless soils based on penetration tests become inapplicable in the case of footings on coal ash fills, although coal ash is also a cohesionless material. Therefore, a method of estimating load-settlement behavior of footings resting on coal ash fills accounting for the effect of capillary and preconsolidation stresses is presented here. The proposed method has been validated by conducting plate load tests on laboratory prepared compacted ash beds and comparing the observed and predicted load-settlement behavior. Overestimation of settlement greater than 100% occurs when capillary and preconsolidation stresses are not accounted for, as is the case in conventional methods.

Ramasamy, G.; Pusadkar, S.S. [IIT Roorkee, Roorkee (India). Dept. of Civil Engineering

2007-11-15T23:59:59.000Z

168

Fly ash utilization in McLean County, North Dakota. Topical report, Task 7.25  

SciTech Connect (OSTI)

In 1989, the McLean County Commissioners requested assistance from personnel at the University of North Dakota Energy and Environmental Research Center (EERC) with the construction of a section of road and a boat ramp in their county. Assistance was sought from the EERC because the county`s construction plans called for partial replacement of the lime and portland cement normally used for soil stabilization with fly ash. Since the EERC had recently conducted several research projects dealing with the use of coal combustion by-products for road construction, the commissioners requested that EERC personnel help to determine appropriate formulas for the stabilized soil mixtures to be used for both the road and boat ramp applications. An additional incentive was provided when the management of the Coal Creek Power Plant offered to donate the necessary fly ash at no cost. This project was performed as a joint venture between McLean County and the EERC. The EERC was primarily responsible for conducting a laboratory testing program to develop soil stabilization mixtures for the two construction activities. These mixtures were to contain a relatively high percentage of fly ash and to exhibit sufficient strength and durability so that the road and boat ramp would both have a service life of 20 years or more. McLean County would be primarily responsible for the road and boat ramp construction activities. The funding for the EERC portion of the project was provided by the US Department of Energy through a joint venture support program.

Moretti, C.J.

1993-03-01T23:59:59.000Z

169

Cement report - CEC format 110611  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

9E 9E Opportunities for Energy Efficiency and Demand Response in the California Cement Industry Daniel Olsen, Sasank Goli, David Faulkner, Aimee McKane Environmental Energy Technologies Division December 2010 Disclaimer This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or

170

Treatment of fly ash for use in concrete  

DOE Patents [OSTI]

A process for treating fly ash to render it highly usable as a concrete additive. A quantity of fly ash is obtained that contains carbon and which is considered unusable fly ash for concrete based upon foam index testing. The fly ash is mixed with an activator solution sufficient to initiate a geopolymerization reaction and for a geopolymerized fly ash. The geopolymerized fly ash is granulated. The geopolymerized fly ash is considered usable fly ash for concrete according to foam index testing. The geopolymerized fly ash may have a foam index less than 35% of the foam index of the untreated fly ash, and in some cases less than 10% of the foam index of the untreated fly ash. The activator solution may contain an alkali metal hydroxide, carbonate, silicate, aluminate, or mixtures thereof.

Boxley, Chett (Park City, UT); Akash, Akash (Salt lake City, UT); Zhao, Qiang (Natick, MA)

2012-05-08T23:59:59.000Z

171

Treatment of fly ash for use in concrete  

DOE Patents [OSTI]

A process for treating fly ash to render it highly usable as a concrete additive. A quantity of fly ash is obtained that contains carbon and which is considered unusable fly ash for concrete based upon foam index testing. The fly ash is mixed with an activator solution sufficient to initiate a geopolymerization reaction and for a geopolymerized fly ash. The geopolymerized fly ash is granulated. The geopolymerized fly ash is considered usable fly ash for concrete according to foam index testing. The geopolymerized fly ash may have a foam index less than 35% of the foam index of the untreated fly ash, and in some cases less than 10% of the foam index of the untreated fly ash. The activator solution may contain an alkali metal hydroxide, carbonate, silicate, aluminate, or mixtures thereof.

Boxley, Chett; Akash, Akash; Zhao, Qiang

2013-01-08T23:59:59.000Z

172

Guidebook for Using the Tool BEST Cement: Benchmarking and Energy Savings Tool for the Cement Industry  

E-Print Network [OSTI]

Advanced Concepts of Waste Heat Recovery in Cement Plantsquantities of low grade waste heat from the kilns or clinkerthere is significant effect of waste heat recovery on dioxin

Galitsky, Christina

2009-01-01T23:59:59.000Z

173

A STUDY OF THE EFFECTS OF POST-COMBUSTION AMMONIA INJECTION ON FLY ASH QUALITY: CHARACTERIZATION OF AMMONIA RELEASE FROM CONCRETE AND MORTARS CONTAINING FLY ASH AS A POZZOLANIC ADMIXTURE  

SciTech Connect (OSTI)

Work completed in this reporting period focused primarily on continuing measurements of the rate of ammonia loss from concrete, and the measurement of ammonia gas in the air above concrete and flowable fill immediately after placement. Concrete slabs were prepared to monitor the loss of ammonia during mixing, the concentration in the airspace above the slabs soon after placement, and the total quantity of ammonia evolved over a longer time period. Variables tested include temperature, ventilation rate, water:cementitious (W:C) ratio, and fly ash source. Short-term data indicate that for concrete placed in areas with poor air ventilation the fly ash NH{sub 3} concentration should not exceed about 90 to 145 mg/kg ash, depending on the water:cement ratio and the fly ash replacement rate, if a concentration of 10 ppm NH{sub 3} in the air is assumed to be the maximum acceptable level. Longer-term experiments showed that the ammonia loss rate is dependent on ammonia source (that is ammoniated ash vs. non-ammoniated ash with ammonia added to the water), and is also dependent on W:C ratio and temperature. Experiments were also conducted to study the loss of ammonia from fresh concrete during mixing. It was found that a high water:cementitious mix lost a greater percentage of ammonia than a low W:C mix, with a medium W:C mix losing an amount intermediate between these two. However, a larger batch size resulted in a smaller percentage of ammonia lost. The data suggest that a significant quantity of ammonia could be lost from Ready Mix concrete during transit, depending on the transit time, batch size, and mix proportions.

Robert F. Rathbone; Thomas L. Robl

2002-04-11T23:59:59.000Z

174

Climate VISION: Private Sector Initiatives: Cement  

Office of Scientific and Technical Information (OSTI)

Letters of Intent/Agreements Letters of Intent/Agreements Portland Cement Association Logo The Portland Cement Association has committed to a 10% reduction in carbon dioxide (CO2) emissions per ton of cementitious product produced or sold from a 1990 baseline by 2020. The industry will achieve this goal and foster further reductions by end users of their product through the implementation of a 3-part program that focuses on the production process, the product cement manufacturers produce, and application of the product. Reductions from the first two elements of this plan will contribute to achieving the 10% reduction goal. While reductions from the product application element will not count towards the goal, the CO2-reduction benefits of cement and concrete use could be even more significant than those achieved through manufacturing

175

HYDRAULIC CEMENT PREPARATION FROM LURGI SPENT SHALE  

E-Print Network [OSTI]

hydraulic cement from spent oil shale," Vol. 10, No. 4, p.J. W. , "Colorado's primary oil shale resource for verticalSimulated effects of oil-shale development on the hydrology

Mehta, P.K.

2013-01-01T23:59:59.000Z

176

Ash Deposition Behavior of Upgraded Brown Coal and Bituminous Coal  

Science Journals Connector (OSTI)

Ash Deposition Behavior of Upgraded Brown Coal and Bituminous Coal ... Ash with a low melting point causes slagging and fouling problems in pulverized coal combustion boilers. ... The ash composition in coal and operational conditions in boilers such as heat load greatly affect the ash deposition behavior. ...

Katsuya Akiyama; Haeyang Pak; Toshiya Tada; Yasuaki Ueki; Ryo Yoshiie; Ichiro Naruse

2010-07-22T23:59:59.000Z

177

Fusibility and sintering characteristics of ash  

SciTech Connect (OSTI)

The temperature characteristics of ash fusibility are studied for a wide range of bituminous and brown coals, lignites, and shales with ratios R{sub B/A} of their alkaline and acid components between 0.03 and 4. Acritical value of R{sub B/A} is found at which the fusion temperatures are minimal. The sintering properties of the ashes are determined by measuring the force required to fracture a cylindrical sample. It is found that the strength of the samples increases sharply at certain temperatures. The alkali metal content of the ashes has a strong effect on their sintering characteristics.

Ots, A. A., E-mail: aots@sti.ttu.ee [Tallinn University of Technology (Estonia)

2012-03-15T23:59:59.000Z

178

Rocky Flats ash test procedure (sludge stabilization)  

SciTech Connect (OSTI)

Rocky Flats Ash items have been identified as the next set of materials to be stabilized. This test is being run to determine charge sizes and soak times to completely stabilize the Rocky Flats Ash items. The information gathered will be used to generate the heating rampup cycle for stabilization. This test will also gain information on the effects of the glovebox atmosphere (moisture) on the stabilized material. This document provides instructions for testing Rocky Flats Ash in the HC-21C muffle furnace process.

Winstead, M.L.

1995-09-14T23:59:59.000Z

179

Fluidized bed gasification ash reduction and removal process  

DOE Patents [OSTI]

In a fluidized bed gasification system an ash removal system to reduce the particulate ash to a maximum size or smaller, allow the ash to cool to a temperature lower than the gasifier and remove the ash from the gasifier system. The system consists of a crusher, a container containing level probes and a means for controlling the rotational speed of the crusher based on the level of ash within the container.

Schenone, Carl E. (Madison, PA); Rosinski, Joseph (Vanderbilt, PA)

1984-12-04T23:59:59.000Z

180

Fluidized bed gasification ash reduction and removal system  

DOE Patents [OSTI]

In a fluidized bed gasification system an ash removal system to reduce the particulate ash to a maximum size or smaller, allow the ash to cool to a temperature lower than the gasifier and remove the ash from the gasifier system. The system consists of a crusher, a container containing level probes and a means for controlling the rotational speed of the crusher based on the level of ash within the container.

Schenone, Carl E. (Madison, PA); Rosinski, Joseph (Vanderbilt, PA)

1984-02-28T23:59:59.000Z

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Fly ash system technology improves opacity  

SciTech Connect (OSTI)

Unit 3 of the Dave Johnston Power Plant east of Glenrock, WY, USA had problems staying at or below the opacity limits set by the state. The unit makes use of a Lodge Cottrell precipitator. When the plant changed to burning Power River Basin coal, ash buildup became a significant issue as the fly ash control system was unable to properly evacuate hoppers on the unit. To overcome the problem, the PLC on the unit was replaced with a software optimization package called SmartAsh for the precipitator fly ash control system, at a cost of $500,000. After the upgrade, there have been no plugged hoppers and the opacity has been reduced from around 20% to 3-5%. 2 figs.

NONE

2007-06-15T23:59:59.000Z

182

Aqueous alteration of municipal solid waste ash  

SciTech Connect (OSTI)

Municipal solid waste (MSW) ash is composed largely of amorphous oxides and approximately 20% minerals including halite, magnetite, hematite, quartz, gypsum, calcite, and rutile. It is also enriched in toxic trace metals by up to three orders of magnitude over average soil. The thermodynamic stabilities and rates of dissolution of the minerals and glasses in MSW ash will determine whether the ash is an environmental problem. The authors have used batch reactors at 20, 40, and 60 C over time periods up to 60 days to simulate longer reaction times for ash under cooler landfill conditions. Soluble salts are most quickly dissolved, giving solutions dominated by Ca[sup 2+], Na[sup +], K[sup +], SO[sub 2][sup 2[minus

Kirby, C.S.; Rimstidt, J.D. (Virginia Polytechnic Institute and State Univ., Blacksburg, VA (United States))

1992-01-01T23:59:59.000Z

183

Carbonation of FBC ash by sonochemical treatment  

Science Journals Connector (OSTI)

This work explores the sonochemical-enhanced carbonation of FBC ash for direct disposal in landfills. Tests have been conducted using four ashes originating from three commercial CFBC boilers. Experiments with additives such as NaCl and seawater have also been carried out. Tests were performed at low (20°, 40 °C) and high (60°, 80 °C) temperatures. Sonicated samples were analyzed using TGA, TGA–FTIR and XRD techniques to determine the influence of other calcium compounds (OCC). The particle size reduction brought about by sonication was quantified using wet sieving. The ash reactivity displays a strong temperature dependency with almost complete carbonation achieved in minutes at higher temperatures. Additives were found to increase the level of hydration of the ashes, in line with previous work; however, carbonation levels were unaffected. TGA, TGA–FTIR and XRD analysis of the samples indicated participation of OCC, which were also formed during hydration.

A. Rao; E.J. Anthony; L. Jia; A. Macchi

2007-01-01T23:59:59.000Z

184

Rocky Flats Ash test procedure (sludge stabilization)  

SciTech Connect (OSTI)

Rocky Flats Ash items have been identified as the next set of materials to be stabilized. This test is being run to determine charge sizes and soak times to completely stabilize the Rocky Flats Ash items. The information gathered will be used to generate the heating rampup cycle for stabilization. The test will provide information to determine charge sizes, soak times and mesh screen sizes (if available at time of test) for stabilization of Rocky Flats Ash items to be processed in the HC-21C Muffle Furnace Process. Once the charge size and soak times have been established, a program for the temperature controller of the HC-21C Muffle Furnace process will be generated for processing Rocky Flats Ash.

Funston, G.A.

1995-06-14T23:59:59.000Z

185

Hydrothermal reactions of fly ash. Final report  

SciTech Connect (OSTI)

The emphasis of the work done has been to determine the reactivities of two ashes believed to be representative of those generated. A bituminous ash and a lignitic ash have been investigated. The reactions of these ashes undergo when subjected to mild hydrothermal conditions were explored. The nature of the reactions which the ashes undergo when alkaline activators, calcium hydroxide and calcium sulfate are present was also investigated. It was determined that calcium silicate hydrate, calcium aluminate hydrate, and the calcium sulfoaluminate hydrate ettringite form under these conditions. It appears 3CaO{center_dot}Al{sub 2}O{sub 3}{center_dot}3CaSO{sub 4}{center_dot}32H{sub 2}O (ettringite) formation needs to be considered in ashes which contain significant amounts of sulfate. Therefore the stability region for ettringite was established. It was also determined that calcium silicate hydrate, exhibiting a high internal surface area, will readily form with hydrothermal treatment between 50{degrees} and 100{degrees}C. This phase is likely to have a significant capacity to take up heavy metals and oxyanions and this ability is being explored.

Brown, P.W.

1995-12-31T23:59:59.000Z

186

Flue gas desulfurization gypsum and fly ash  

SciTech Connect (OSTI)

The Cumberland Fossil Plant (CUF) is located in Stewart County, Tennessee, and began commercial operation in 1972. This is the Tennessee Valley Authority`s newest fossil (coal-burning) steam electric generating plant. Under current operating conditions, the plant burns approximately seven million tons of coal annually. By-products from the combustion of coal are fly ash, approximately 428,000 tons annually, and bottom ash, approximately 115,000 tons annually. Based on historical load and projected ash production rates, a study was initially undertaken to identify feasible alternatives for marketing, utilization and disposal of ash by-products. The preferred alternative to ensure that facilities are planned for all by-products which will potentially be generated at CUF is to plan facilities to handle wet FGD gypsum and dry fly ash. A number of different sites were evaluated for their suitability for development as FGD gypsum and ash storage facilities. LAW Engineering was contracted to conduct onsite explorations of sites to develop information on the general mature of subsurface soil, rock and groundwater conditions in the site areas. Surveys were also conducted on each site to assess the presence of endangered and threatened species, wetlands and floodplains, archaeological and cultural resources, prime farmland and other site characteristics which must be considered from an environmental perspective.

Not Available

1992-05-01T23:59:59.000Z

187

E-Print Network 3.0 - ash technical progress Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and economic benefits. (1) Fly ash... of coal in conventional and or advanced clean coal technology combustors. These include fly ash, bottom... ash, boiler slag, and flue...

188

Performance and evaluation of gas-engine-driven rooftop air conditioning equipment at the Willow Grove Naval Air Station. Final report (revised October 21, 1996)  

SciTech Connect (OSTI)

The performance was evaluated of a new US cooling technology that has been installed for the first time at a federal facility. The technology is a 15-ton natural gas-engine-driven rooftop air conditioning unit made by Thermo King. Two units were installed to serve the Navy Exchange at Willow Grove. The savings potential at Willow Grove is described and that in the federal sector estimated. Conditions for implementation are discussed. In summary, the new technology is generally cost-effective at sites where marginal electricity cost (per MBtu at the meter) is more than 4 times the marginal gas cost (per MBtu at the meter) and annual full-load-equivalent cooling hours exceed 2,000.

Armstrong, P.R.; Katipamula, S.

1996-10-01T23:59:59.000Z

189

Energy Efficiency Improvement Opportunities for the Cement Industry  

E-Print Network [OSTI]

the production costs of all waste-burning cement kilns, andthree cement plants are burning waste fuels. Beijing Cementof waste; the plant is burning solid waste from the chemical

Worrell, Ernst

2008-01-01T23:59:59.000Z

190

INVESTIGATIONS ON HYDRAULIC CEMENTS FROM SPENT OIL SHALE  

E-Print Network [OSTI]

20 to 40% of the oil shale, and explosively rubblizing andCEMENTS FROM SPENT OIL SHALE P.K. Mehta and P. Persoff AprilCement Manufacture from Oil Shale, U.S. Patent 2,904,445,

Mehta, P.K.

2012-01-01T23:59:59.000Z

191

Identification of Concrete Incompatibilities Using Cement Paste Rheology  

E-Print Network [OSTI]

as well as heat evolution abnormalities. The objectives of the present study were to examine the applicability of the dynamic shear rheometer (DSR) to measure cement paste rheology, and to identify cement and mineral/chemical admixture incompatibilities...

Jang, Se Hoon

2010-07-14T23:59:59.000Z

192

Energy Efficiency Improvement Opportunities for the Cement Industry  

E-Print Network [OSTI]

and energy savings per tonne of cement produced are estimated and then carbon dioxide emissionsand energy savings per tonne of cement produced are estimated and then carbon dioxide emissions

Worrell, Ernst

2008-01-01T23:59:59.000Z

193

Development of an Improved Cement for Geothermal Wells  

Broader source: Energy.gov [DOE]

DOE Geothermal Peer Review 2010 - Presentation. Project objectives: Develop a novel, zeolite-containing lightweight, high temperature, high pressure geothermal cement, which will provide operators with an easy to use, flexible cementing system that saves time and simplifies logistics.

194

Scale-Up and Demonstration of Fly Ash Ozonation Technology  

SciTech Connect (OSTI)

The disposal of fly ash from the combustion of coal has become increasingly important. When the fly ash does not meet the required specification for the product or market intended, it is necessary to beneficiate it to achieve the desired quality. This project, conducted at PPL's Montour SES, is the first near full-scale ({approx}10 ton/day), demonstration of ash ozonation technology. Bituminous and sub bituminous ashes, including two ash samples that contained activated carbon, were treated during the project. Results from the tests were very promising. The ashes were successfully treated with ozone, yielding concrete-suitable ash quality. Preliminary process cost estimates indicate that capital and operating costs to treat unburned carbon are competitive with other commercial ash beneficiation technologies at a fraction of the cost of lost sales and/or ash disposal costs. This is the final technical report under DOE Cooperative Agreement No.: DE-FC26-03NT41730.

Rui Afonso; R. Hurt; I. Kulaots

2006-03-01T23:59:59.000Z

195

Characteristics and distribution of potential ash tree hosts for emerald ash borer  

Science Journals Connector (OSTI)

The emerald ash borer (EAB) (Agrilus planipennis) is a recently discovered (July 2002) exotic insect pest, which has caused the death of millions of ash trees (Fraxinus spp.) in Detroit, MI, USA and has also spread into other areas of Michigan, isolated locations in Indiana, Ohio, Maryland and Virginia, and nearby Windsor, Ont., in Canada. Ash trees occur in many different forest ecosystems in North America, are one of the more widely planted trees in urban areas, and are a valuable commercial timber species. If emerald ash borer populations are not contained and eventually eradicated, the ash resource in North America could be devastated. The destruction caused by EAB and its rate of spread are likely to be strongly influenced by the spatial distribution and status of the ash tree host, but general information regarding the abundance, health and distribution of ash trees is diffused throughout the literature. Here, we summarize what is currently known regarding the characteristics and potential spatial distribution of various species of Fraxinus in natural and planted ecosystems in North America and evaluate this information with specific regard to assessing the relative risk of ash populations to EAB.

David W. MacFarlane; Shawna Patterson Meyer

2005-01-01T23:59:59.000Z

196

Multifunctional Corrosion-resistant Foamed Well Cement Composites  

Broader source: Energy.gov [DOE]

Multifunctional Corrosion-resistant Foamed Well Cement Composites presentation at the April 2013 peer review meeting held in Denver, Colorado.

197

High Temperature Cements | Open Energy Information  

Open Energy Info (EERE)

High Temperature Cements High Temperature Cements Jump to: navigation, search Geothermal ARRA Funded Projects for High Temperature Cements Loading map... {"format":"googlemaps3","type":"ROADMAP","types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"limit":200,"offset":0,"link":"all","sort":[""],"order":[],"headers":"show","mainlabel":"","intro":"","outro":"","searchlabel":"\u2026 further results","default":"","geoservice":"google","zoom":false,"width":"600px","height":"350px","centre":false,"layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","icon":"","visitedicon":"","forceshow":true,"showtitle":true,"hidenamespace":false,"template":false,"title":"","label":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"locations":[{"text":"

198

A STUDY OF THE EFFECTS OF POST-COMBUSTION AMMONIA INJECTION ON FLY ASH QUALITY: CHARACTERIZATION OF AMMONIA RELEASE FROM CONCRETE AND MORTARS CONTAINING FLY ASH AS A POZZOLANIC ADMIXTURE  

SciTech Connect (OSTI)

Work completed in this reporting period focused on the measurement of the rate of ammonia loss from mortar and concrete, and the measurement of ammonia gas in the air above the materials immediately after placement. The majority of mortar experiments have been completed, and testing has begun on concrete. The mortar experiments indicate that the rate of ammonia loss is greater in mortars prepared using a higher water content and water:cement (W:C) ratio, although the higher rate is primarily observed within the first 2 days, after which the loss rates are nearly the same. The source of low-calcium (Class F) fly ash exerted a negligible influence on the loss rate. However, mortar prepared using a higher-calcium fly ash evolved ammonia at a slightly slower rate than the Class F ash mortars. The data also indicate that an increase in ventilation increases the ammonia loss rate from mortar, and suggest that a well-ventilated space could substantially increase the loss of ammonia from mortar and, by inference, a concrete slab. Analysis of ammonia concentrations in the air above freshly-placed mortars in an enclosed space indicate that the fly ash ammonia concentration should not exceed 100 mg N/kg ash in confined space applications. For most other applications with some ventilation the maximum acceptable concentration would be approximately 200 mg/kg. Early results from experiments on concrete suggest that, under similar conditions, ammonia diffusion from concrete occurs at a higher rate than in mortar. In addition, increasing the slump of concrete through the use of chemical admixtures has only a minor effect on the ammonia loss rate.

Robert F. Rathbone; Thomas L. Robl

2001-10-11T23:59:59.000Z

199

Sisal fiber-reinforced cement composite with Portland cement substitution by a combination of metakaolin and nanoclay  

Science Journals Connector (OSTI)

This paper reports the partial replacement of Portland cement (PC) by combination of metakaolin (MK) and nanoclay (NC) in sisal fiber-reinforced cement composites by studying the microstructure, mechanical behavi...

Jianqiang Wei; Christian Meyer

2014-11-01T23:59:59.000Z

200

Utilization of ash from fluidized bed boilers  

SciTech Connect (OSTI)

Combustion ash from a fluidized bed combustion (FBC) boiler contains not only carbon, but also silica alumina, quicklime as a sorbent, and a calcium sulfate by-product. These substances react chemically during fluidized bed combustion, and with the addition of water, they start an ettringite reaction and solidify. We determined the conditions necessary for producing hard solids through the study of the composition, curing methods, and characteristics of the solidified ash. We then used two types of road base material, crushed stone and solidified ash from an FBC boiler, to construct a test road at a site with a great deal of heavy traffic. Construction began in 1985, and since then, periodic tests have been performed to evaluate the performance of the road base materials. The testing of the manufacturing techniques centered on the amount and manner that water was added to the mixture and the curing methods of the mixture. Additional testing focused on the handling of the ash powder, the mixtures, and the solidified ash. Since 1991, under the sponsorship of MITI, the Center for Coal Utilization, in conjunction with Naruto Salt Mfg., Ltd., Nippon Hodo Co., Ltd., and Kawasaki Heavy Industries, Ltd., has used the referenced results to undertake a joint research and development project aimed at the eventual practical application of the technology. In 1993, a pilot facility to solidify ash with the fluidized bed boiler of 75 t/h capacity was completed. At present, all the discharged ash from the pilot facility is being solidified, and experiments on solidification and road base application techniques are underway. Actual road base tests are also in progress, and we are continuing research to meet the national certification requirements for road base materials.

Takada, Tomoaki [Kawasaki Heavy Industries Co., Ltd., Akashi (Japan)

1994-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Master Thesis: Simulation of plastic deformation in cemented carbide inserts  

E-Print Network [OSTI]

Master Thesis: Simulation of plastic deformation in cemented carbide inserts Background Sandvik in cemented carbide, high-speed steel and other hard materials such as diamond, cubic boron nitride in cemented carbide inserts will be performed using the FEM software Ansys and AdvantEdge. The work

Haviland, David

202

Successful Alternatives to Conventional Cement Designs in the Williston Basin  

SciTech Connect (OSTI)

Since mid-1981, 36 wells have been cemented in the Williston Basin with a cementing system diametrically opposed to conventional cementing designs used for bonding across massive salt members. Since implementation, along with the use of relaxed invert emulsion oil mud, not one casing problem has arisen in the wells where these systems were used.

Bryant, G.A.

1984-05-01T23:59:59.000Z

203

Ash aerosol formation from oxy-coal combustion and its relation to ash deposit chemistry  

Science Journals Connector (OSTI)

Abstract Ash aerosol and ash deposit formation during oxy-coal combustion were explored through experiments in a self-sustained 100 kW rated down-fired oxy-fuel combustor. Inlet oxidant conditions consisted of 50% inlet oxygen with CO2 (hereafter denoted as OXY50 conditions). A Berner low pressure impactor (BLPI), a scanning mobility particle sizer (SMPS), and an aerodynamic particle sizer (APS) were used to obtain size segregated ash aerosol samples and to determine the particle size distributions (PSD). A novel surface temperature controlled ash deposition probe system that allowed inside and outside deposits to be separated was used to collect the ash deposits. The ash aerosol \\{PSDs\\} given by the BLPI and those produced by SMPS/APS were consistent with each other. Data suggested that oxy-coal combustion under these conditions did not change the formation mechanisms controlling the bulk ash aerosol composition, but it did increase the formation of ultra-fine particles initially formed through metal vaporization, due to increased vaporization of silicon at the higher combustion temperature. The smaller particles contained within the deposits had higher Si and lower Na and S concentrations under OXY50 conditions than for air combustion. Moreover, the ash aerosol composition for particle sizes less than 2.4 ?m was related to the composition of the inside deposits. A higher Na in the ash aerosol resulted in higher Na in inside deposits with comparable absolute Na concentrations in both those aerosol particles and those inside deposits particles. The contribution of S and Si to the inside deposits showed that S in the vaporization modes together with Si in the ultrafine vaporization mode, contributed significantly to the composition of the inside deposits. These results provided direct evidence that prediction of the chemistry of the initial deposit layer (but not of the bulk deposits) required knowledge of the size segregated chemistry of the ash aerosol.

Zhonghua Zhan; Andrew Fry; Yanwei Zhang; Jost O.L. Wendt

2014-01-01T23:59:59.000Z

204

Coal ash behavior in reducing environments  

SciTech Connect (OSTI)

This project is a four-year program designed to investigate the transformations and properties of coal ash in reducing environment systems. This project is currently midway through its third year. The work to date has emphasized four areas of research: (1) the development of quantitative techniques to analyze reduced species, (2) the production of gasification-type samples under closely controlled conditions, (3) the systematic gasification of specific coals to produce information about their partitioning during gasification, and (4) the study of the physical properties of ashes and slags under reducing atmospheres. The project is organized into three tasks which provide a strong foundation for the project. Task 1, Analytical Methods Development, has concentrated on the special needs of analyzing samples produced under a reducing atmosphere as opposed to the more often studied combustion systems. Task 2, Inorganic Partitioning and Ash Deposition, has focused on the production of gasification-type samples under closely controlled conditions for the study of inorganic partitioning that may lead to deposition. Task 3, Ash and Slag Physical Properties, has made large gains in the areas of sintering and strength development of coal ashes under reducing atmospheres for the evaluation of deposition problems. Results are presented for all three tasks.

Benson, S.A.; Erickson, T.A.; Brekke, D.W.; Folkedahl, B.C.; Tibbetts, J.E.; Nowok, J.W.

1994-10-01T23:59:59.000Z

205

Leaching of elements from bottom ash, economizer fly ash, and fly ash from two coal-fired power plants  

Science Journals Connector (OSTI)

To assess how elements leach from several types of coal combustion products (CCPs) and to better understand possible risks from CCP use or disposal, coal ashes were sampled from two bituminous-coal-fired power plants. One plant located in Ohio burns high-sulfur (about 3.9%) Upper Pennsylvanian Pittsburgh coal from the Monongahela Group of the Central Appalachian Basin; the other in New Mexico burns low-sulfur (about 0.76%) Upper Cretaceous Fruitland Formation coal from the San Juan Basin, Colorado Plateau. The sampled \\{CCPs\\} from the Ohio plant were bottom ash (BA), economizer fly ash (EFA), and fly ash (FA); the sampled \\{CCPs\\} from the New Mexico plant were BA, mixed FA/EFA, FA, and cyclone-separated coarse and fine fractions of a FA/EFA and FA blend. Subsamples of each ash were leached using the long-term leaching (60-day duration) component of the synthetic groundwater leaching procedure (SGLP) or the toxicity characteristic leaching procedure (TCLP, 18-hour duration). These ashes were all alkaline. Leachate concentrations and leachabilities of the elements from the \\{CCPs\\} were similar between corresponding CCP types (BA, EFA, and FA) from each plant. The leachabilities of most elements were lowest in BA (least leachable) and increased from EFA to FA (most leachable). Ca and Sr were leached more from EFA than from either BA or FA. Leachability of most elements also increased as FA particle size decreased, possibly due in part to increasing specific surface areas. Several oxyanion-forming elements (As, Mo, Se, U, and V) leached more under SGLP than under TCLP; the opposite was true for most other elements analyzed.

Kevin B. Jones; Leslie F. Ruppert; Sharon M. Swanson

2012-01-01T23:59:59.000Z

206

Influence of Particle Morphology on the Hydraulic Behavior of Coal Ash and Sand  

Science Journals Connector (OSTI)

Residues of thermo electrical power plants are generically known as ashes, and can be classifies as slag, bottom ash and fly ash. Slag has a high content of unburned ... %) and coarse grains or clods. Bottom ash ...

Karla Salvagni Heineck; Rosemar Gomes Lemos…

2010-07-01T23:59:59.000Z

207

Thermal stability of certain hydrated phases in systems made using portland cement. Final report  

SciTech Connect (OSTI)

As part of the study of hydraulic-cement system for use in possible underground isolation of nuclear wastes, this study was made to determine the temperature stability of ettringite and chloroaluminate. Either or both of these phases may be expected in a hydraulic cement system depending on the presence of salt (NaCl). The study of ettringite was made using 15 mixtures that contained portland cement, plaster, 2 levels of water, and in some mixtures, 1 of 6 pozzolans (3 fly ashes, 1 slag, a silica fume, a natural pozzolan), plus a 16th mixture with anhydrous sodium sulfate replacing plaster (CaSO4 . 1/2H20). Specimens were made and stored at 23, 50, and 75 C or 23, 75, and 100 C (all four temperatures in one case) for periodic examination by x-ray diffraction for phase compositiion and ettringite stability, and testing for compressive strength and restrained expansion. A more limited study of the stability of chloroaluminate was made along the same lines using fewer mixtures, salt instead of plaster, and higher temperatures plus some pressure. It was found that while some ettringette was decomposed at 75 C, depending on the composition of the mixture, all ettringite was undetectable by x-ray diffraction at 100 C, usually within a few days. The evidence indicates that the ettringite became amorphous and no significant test phases formed in its place. Since there was no corresponding loss in strength or reduction in volume, this loss of ettringite crystallinity was considered to be damaging. Based on much more limited data, chloroaluminate was found to decompose between 130 C at 25 psi and 170 C at 100 psi; no significant phases replaced it.

Buck, A.D.; Burkes, J.P.; Poole, T.S.

1985-08-01T23:59:59.000Z

208

Capture of green-house carbon dioxide in Portland cement  

SciTech Connect (OSTI)

A novel process has been developed to sequester green-house carbon dioxide produced by the cement industry in precast cement products. Typically, 10--24 wt % of CO{sub 2} produced by calcination of calcium carbonate during clinkering of the cement may be captured. The carbonation process also cures the cement paste within minutes into hard bodies. The process maintains high pH conditions during curing, to allow conventional steel reinforcement of concrete. The process will save time and money to the cement industry, and at the same time, help them to comply with the Clean Air Act by sequestering the green-house carbon dioxide.

Wagh, A.S.; Singh, D.; Pullockaran, J.; Knox, L.

1993-12-31T23:59:59.000Z

209

INVESTIGATIONS ON HYDRAULIC CEMENTS FROM SPENT OIL SHALE  

SciTech Connect (OSTI)

A process for making hydraulic cements from spent oil shale is described in this paper. Inexpensive cement is needed to grout abandoned in-situ retorts of spent shale for subsidence control, mitigation of leaching, and strengthening the retorted mass in order to recover oil from adjacent pillars of raw shale. A hydraulic cement was produced by heating a 1:1 mixture of Lurgi spent shale and CaCO{sub 3} at 1000 C for one hour. This cement would be less expensive than ordinary portland cement and is expected to fulfill the above requirements.

Mehta, P.K.; Persoff, P.

1980-04-01T23:59:59.000Z

210

Ash limitation of physical coal beneficiation for medium–high ash coal—A geochemistry perspective  

Science Journals Connector (OSTI)

Abstract Nowadays the industrial coal beneficiation in China could only reduce the ash yield to about 10%, which could not meet the requirement or standard of environment protection. In this work, the possibility of reducing the ash yield was studied from the aspect of geochemistry. The channel samples were collected from two coal seams in Guizhou and Shanxi province, China and then conducted analysis by combining data from coals worldwide. The result reveals that the same coal seam or the coals deposited in the same peat swamp show a significantly positive correlation between ash yield and Al2O3 + SiO2 content, and the intercept of regression equation on the ash axis is always less than 5% (generally 2–5%). Overall, the coal from China is featured with a higher intercept compared with that in the other countries. The intercept of 2–5% on the ash axis indicates an original inorganic component in coal-forming peat. The research result also presents a theoretical limitation of coal ash by coal cleaning, because 2–5% of inorganic components in medium–high quality ash coal could hardly be separated by traditional physical coal beneficiation.

Wenfeng Wang; Weiduo Hao; Simon Xu; Fuchang Qian; Shuxun Sang; Yong Qin

2014-01-01T23:59:59.000Z

211

A realistic molecular model of cement hydrates  

Science Journals Connector (OSTI)

...also probe the texture and extent of anisotropic structures within cement paste at micrometer length...nanocomposites: Concrete, bone, and shale . J Am Ceram Soc 90 : 2677 – 2692 . 19...elasticity of an isotropic aggregate of anisotropic cubic crystals . J Appl Mech 21 : 135...

Roland J.-M. Pellenq; Akihiro Kushima; Rouzbeh Shahsavari; Krystyn J. Van Vliet; Markus J. Buehler; Sidney Yip; Franz-Josef Ulm

2009-01-01T23:59:59.000Z

212

Burning hazardous waste in cement kilns  

SciTech Connect (OSTI)

The cement manufacturing process is one of the oldest in the world, having been in practice for over 2000 years. It is also one of the most energy intensive, with up to 65 percent of the cost of the product attributable to energy consumption. In addition to high energy demand, the process conditions include extremely high temperatures. Cement clinker forms when the correct mixture of raw materials is heated to 2650/sup 0/ F. This requires combustion temperatures exceeding 3000/sup 0/ F. under oxidizing conditions. To accomplish this, gas temperatures above 2000/sup 0/ F. occur for several seconds (typically five seconds), which is much longer than residence times in permitted hazardous waste incinerators. These conditions are extremely favorable to the destruction of organic compounds and have led to extensive investigation into the potential for burning hazardous waste in cement kilns. Cement kilns consuming hazardous wastes have been tested for air emissions under various operating conditions. The substantial body of information on the emissions and handling of hazardous wastes from these studies has demonstrated that effective destruction of wastes can be accomplished with the added benefits of energy conservation and no significant change in air emissions.

Chadbourne, J.F.; Helmsteller, A.J.

1983-06-01T23:59:59.000Z

213

Glass Fibres for Cement Reinforcement [and Discussion  

Science Journals Connector (OSTI)

21 January 1980 research-article Glass Fibres for Cement Reinforcement [and Discussion...Ubbelohde G. Manfre The development of glass fibre compositions having sufficient alkali...resistance were used in an initial evaluation of glass compositions, which were then further...

1980-01-01T23:59:59.000Z

214

Extraction of trace metals from fly ash  

DOE Patents [OSTI]

A process is described for recovering silver, gallium and/or other trace metals from a fine grained industrial fly ash associated with a process for producing phosphorous. The fly ash has a silicate base and contains surface deposits of the trace metals as oxides, chlorides or the like. The process is carried out by contacting the fly ash with AlCl/sub 3/ in an alkali halide melt to react the trace metals with the AlCl/sub 3/ to form compositions soluble in the melt and a residue containing the silicate and aluminum oxide or other aluminum precipitate, and separating the desired trace metal or metals from the melt by electrolysis or other separation techniques.

Blander, M.; Wai, C.M.; Nagy, Z.

1983-08-15T23:59:59.000Z

215

Extraction of trace metals from fly ash  

DOE Patents [OSTI]

A process for recovering silver, gallium and/or other trace metals from a fine grained industrial fly ash associated with a process for producing phosphorous, the fly ash having a silicate base and containing surface deposits of the trace metals as oxides, chlorides or the like, with the process being carried out by contacting the fly ash with AlCl.sub.3 in an alkali halide melt to react the trace metals with the AlCl.sub.3 to form compositions soluble in the melt and a residue containing the silicate and aluminum oxide or other aluminum precipitate, and separating the desired trace metal or metals from the melt by electrolysis or other separation techniques.

Blander, Milton (Palos Park, IL); Wai, Chien M. (Moscow, ID); Nagy, Zoltan (Woodridge, IL)

1984-01-01T23:59:59.000Z

216

Grain characteristics and engineering properties of coal ash  

Science Journals Connector (OSTI)

?Ash produced by the coal fired thermal plants is often used as ... the grain characteristics and the engineering properties of coal ash. The results of x-ray diffraction, ... characteristic that may be used for ...

A. Trivedi; V. K. Sud

2002-12-01T23:59:59.000Z

217

The Leaching of Major and Trace Elements from Coal Ash  

Science Journals Connector (OSTI)

Most power stations currently operate wet ash disposal systems. However, this method of ash disposal is being subjected to increasing scrutiny as there is a potential for contamination of surface and groundwat...

D. R. Jones

1995-01-01T23:59:59.000Z

218

High carbon fly ash finds uses in highway construction  

SciTech Connect (OSTI)

The beneficial use of high carbon fly ash in a highway construction project is discussed. The fly ash also had a relatively high content of mercury and some other heavy metals. 1 fig., 4 photos.

Wen, H.; Patton, R. [University of Wisconsin at Madison, Madison, WI (United States). Recycled Materials Resources Center

2008-07-01T23:59:59.000Z

219

Leaching of Selected Elements from Coal Ash Dumping  

Science Journals Connector (OSTI)

Coal ash obtained by coal combustion in the "Nikola Tesla A ... ionic strength of river water, we extracted coal ash with distilled water and 0.002 M–...3. The results show that changes in river water ionic ...

A. Popovic; D. Radmanovic; D. Djordjevic; P. Polic

2005-01-01T23:59:59.000Z

220

Eco-friendly fly ash utilization: potential for land application  

SciTech Connect (OSTI)

The increase in demand for power in domestic, agricultural, and industrial sectors has increased the pressure on coal combustion and aggravated the problem of fly ash generation/disposal. Consequently the research targeting effective utilization of fly ash has also gained momentum. Fly ash has proved to be an economical substitute for expensive adsorbents as well as a suitable raw material for brick manufacturing, zeolite synthesis, etc. Fly ash is a reservoir of essential minerals but is deficient in nitrogen and phosphorus. By amending fly ash with soil and/or various organic materials (sewage sludge, bioprocess materials) as well as microbial inoculants like mycorrhizae, enhanced plant growth can be realized. Based on the sound results of large scale studies, fly ash utilization has grown into prominent discipline supported by various internationally renowned organizations. This paper reviews attempts directed toward various utilization of fly ash, with an emphasis on land application of organic/microbial inoculants amended fly ash.

Malik, A.; Thapliyal, A. [Indian Institute of Technology Delhi, New Delhi (India)

2009-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Utilization of blended fluidized bed combustion (FBC) ash and pulverized coal combustion (PCC) fly ash in geopolymer  

SciTech Connect (OSTI)

In this paper, synthesis of geopolymer from fluidized bed combustion (FBC) ash and pulverized coal combustion (PCC) fly ash was studied in order to effectively utilize both ashes. FBC-fly ash and bottom ash were inter-ground to three different finenesses. The ashes were mixed with as-received PCC-fly ash in various proportions and used as source material for synthesis of geopolymer. Sodium silicate (Na{sub 2}SiO{sub 3}) and 10 M sodium hydroxide (NaOH) solutions at mass ratio of Na{sub 2}SiO{sub 3}/NaOH of 1.5 and curing temperature of 65 deg. C for 48 h were used for making geopolymer. X-ray diffraction (XRD), scanning electron microscopy (SEM), degree of reaction, and thermal gravimetric analysis (TGA) were performed on the geopolymer pastes. Compressive strength was also tested on geopolymer mortars. The results show that high strength geopolymer mortars of 35.0-44.0 MPa can be produced using mixture of ground FBC ash and as-received PCC-fly ash. Fine FBC ash is more reactive and results in higher degree of reaction and higher strength geopolymer as compared to the use of coarser FBC ash. Grinding increases reactivity of ash by means of increasing surface area and the amount of reactive phase of the ash. In addition, the packing effect due to fine particles also contributed to increase in strength of geopolymers.

Chindaprasirt, Prinya [Department of Civil Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen 40002 (Thailand); Rattanasak, Ubolluk, E-mail: ubolluk@buu.ac.t [Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi 20131 (Thailand)

2010-04-15T23:59:59.000Z

222

POLYVINYLCHLORIDE WASTE WITH OIL SHALE ASH TO CAPTURE  

E-Print Network [OSTI]

alkaline oil shale ash. Solid heat carrier (Galoter process)-type oil shale retorting units, where the

V. Oja; A. Elenurm; I. Rohtla; E. Tearo; E. Tali

223

Measurement of the Sintering Kinetics of Coal Ash  

Science Journals Connector (OSTI)

Measurement of the Sintering Kinetics of Coal Ash ... A new technique has been developed to determine the sintering rate of coal ash based on the measurement of the pressure-drop across a pellet of ash. ... The technique developed in this study shows a good repeatability of the rate of sintering and confirms that viscous flow is the dominant mechanism for sintering of coal ash. ...

A. Y. Al-Otoom; L. K. Elliott; T. F. Wall; B. Moghtaderi

2000-08-16T23:59:59.000Z

224

Coal-ash spills highlight ongoing risk to ecosystems  

Science Journals Connector (OSTI)

Coal-ash spills highlight ongoing risk to ecosystems ... A holding pond for coal ash collapsed, releasing billions of gallons of coal-ash sludge onto nearby farmland and into the waters of the Emory and Tennessee rivers. ... For decades, researchers, environmental advocates, local communities, and even the U.S. EPA have been concerned about the ongoing risks posed by the unregulated management of coal ash. ...

Rhitu Chatterjee

2009-03-25T23:59:59.000Z

225

Fractionation and transport of nutrients among coal ash residues and in soil covered with fly ash-amended organic compost  

Science Journals Connector (OSTI)

Coal-fired power plants generate different types of ash residues and discharge small particles and vapors to the atmosphere. The ash residues which account for the major part ... the byproducts are collected and ...

M. P. Menon; K. S. Sajwan; G. S. Ghuman; J. James…

1993-07-01T23:59:59.000Z

226

Impact of Coal Ash Lagoons Upon the Surrounding Soils  

Science Journals Connector (OSTI)

Ash and slag are the waste products from thermal power stations (TPS). In one Polish TPS, 10,000 Mg of slag, and 48,700 Mg of ash are produced every year. All the slag is utilizedi whereas the ash is tipped of...

E. S. Kempa; A. J?drczak

1990-01-01T23:59:59.000Z

227

Maintaining and Improving Marketability of Coal Fly Ash  

E-Print Network [OSTI]

1 Maintaining and Improving Marketability of Coal Fly Ash John N. Ward Ben Franklin Headwaters;2 A Headline You May Have Seen What is the future of coal fly ash utilization in a mercury controls world? What is produced when coal is consumed by power plants Fly ash can be used beneficially in numerous applications

228

Screening technology reduces ash in spiral circuits  

SciTech Connect (OSTI)

In 2006, the James River Coal Co. selected the Stack Sizer to remove the minus 100 mesh high ash clay fraction from the clean coal spiral product circuits at the McCoy-Elkhorn Bevins Branch prep plant and at the Blue Diamond Leatherwood prep plant in Kentucky. The Stack Sizer is a multi-deck, high-frequency vibrating screen capable of separations as fine as 75 microns when fitted with Derrick Corp.'s patented high open area urethane screen panels. Full-scale lab tests and more than 10 months of continuous production have confirmed that the Stack Sizer fitted with Derrick 100 micron urethane screen panels consistently produces a clean coal fraction that ranges from 8 to 10% ash. Currently, each five-deck Stack Sizer operating at the Bevins Branch and Leatherwood prep plants is producing approximately 33 tons per hour of clean coal containing about 9% ash. This represents a clean coal yield of about 75% and an ash reduction of about 11% from the feed slurry. 3 figs. 2 tabs.

Brodzik, P. [Derrick Corp., Buffalo, NY (United States)

2007-05-15T23:59:59.000Z

229

New Strong Cement Materials: Chemically Bonded Ceramics  

Science Journals Connector (OSTI)

...Silica fume 0.2 2.89 3.3 Slag 8 14.2 Sand 150-1180 28.5 55.7 Steel 710-2000...28); 83-01 is made with basaltic sand. tSee (27). tSee (40). (pH 12...cement and 30% 28 days 38 15 11,000 30 21 sand Natura weathering (U.K.) for 36 13...

DELLA M. ROY

1987-02-06T23:59:59.000Z

230

Wellbore Cement: Research That Begins Where the Sidewalk Ends | Department  

Broader source: Energy.gov (indexed) [DOE]

Wellbore Cement: Research That Begins Where the Sidewalk Ends Wellbore Cement: Research That Begins Where the Sidewalk Ends Wellbore Cement: Research That Begins Where the Sidewalk Ends October 29, 2013 - 1:15pm Addthis Wellbore Cement: Research That Begins Where the Sidewalk Ends Learn more To learn more about this research, read the full report, An Assessment of Research Needs Related to Improving Primary Cement Isolation of Formations in Deep Offshore Wells. Full report on NETL's website. As we meander down the sidewalk, how many of us give more than a passing thought to the cement underfoot? For the most part, it's just another flat surface, a means to an end, whether it leads us to a coffee shop, book store, or parking lot. But when it's puckered, chipped, or crumbling, we certainly think about its need for repair.

231

Effective Permeability Change in Wellbore Cement with Carbon Dioxide Reaction  

SciTech Connect (OSTI)

Portland cement, a common sealing material for wellbores for geological carbon sequestration was reacted with CO{sub 2} in supercritical, gaseous, and aqueous phases at various pressure and temperature conditions to simulate cement-CO{sub 2} reaction along the wellbore from carbon injection depth to the near-surface. Hydrated Portland cement columns (14 mm diameter x 90 mm length; water-to-cement ratio = 0.33) including additives such as steel coupons and Wallula basalt fragments were reacted with CO{sub 2} in the wet supercritical (the top half) and dissolved (the bottom half) phases under carbon sequestration condition with high pressure (10 MPa) and temperature (50 C) for 5 months, while small-sized hydrated Portland cement columns (7 mm diameter x 20 mm length; water-to-cement ratio = 0.38) were reacted with CO{sub 2} in dissolved phase at high pressure (10 MPa) and temperature (50 C) for 1 month or with wet CO{sub 2} in gaseous phase at low pressure (0.2 MPa) and temperature (20 C) for 3 months. XMT images reveal that the cement reacted with CO{sub 2} saturated groundwater had degradation depth of {approx}1 mm for 1 month and {approx}3.5 mm for 5 month, whereas the degradation was minor with cement exposure to supercritical CO{sub 2}. SEM-EDS analysis showed that the carbonated cement was comprised of three distinct zones; the innermost less degraded zone with Ca atom % > C atom %, the inner degraded zone with Ca atom % {approx} C atom % due to precipitation of calcite, the outer degraded zone with C atom % > Ca atom % due to dissolution of calcite and C-S-H, as well as adsorption of carbon to cement matrix. The outer degraded zone of carbonated cement was porous and fractured because of dissolution-dominated reaction by carbonic acid exposure, which resulted in the increase in BJH pore volume and BET surface area. In contrast, cement-wet CO{sub 2}(g) reaction at low P (0.2 MPa)-T (20 C) conditions for 1 to 3 months was dominated by precipitation of micron-sized calcite on the outside surface of cement, which resulted in the decrease in BJH pore volume and BET surface area. Cement carbonation and pore structure change are significantly dependent on pressure and temperature conditions as well as the phase of CO{sub 2}, which controls the balance between precipitation and dissolution in cement matrix. Geochemical modeling result suggests that ratio of solid (cement)-to-solution (carbonated water) has a significant effect on cement carbonation, thus the cement-CO{sub 2} reaction experiment needs to be conducted under realistic conditions representing the in-situ wellbore environment of carbon sequestration field site. Total porosity and air permeability for a duplicate cement column with water-to-cement ratio of 0.38 measured after oven-drying by Core Laboratories using Boyle's Law technique and steady-state method were 31% and 0.576 mD. A novel method to measure the effective liquid permeability of a cement column using X-ray micro-tomography images after injection of pressurized KI (potassium iodide) is under development by PNNL. Preliminary results indicate the permeability of a cement column with water-to-cement ratio of 0.38 is 4-8 mD. PNNL will apply the method to understand the effective permeability change of Portland cement by CO{sub 2}(g) reaction under a variety of pressure and temperature conditions to develop a more reliable well-bore leakage risk model.

Um, Wooyong; Jung, Hun Bok; Martin, Paul F.; McGrail, B. Peter

2011-11-01T23:59:59.000Z

232

Cement Bond Log | Open Energy Information  

Open Energy Info (EERE)

Cement Bond Log Cement Bond Log Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Cement Bond Log Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Acoustic Logs Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Thermal: Cost Information Low-End Estimate (USD): 0.8585 centUSD 8.5e-4 kUSD 8.5e-7 MUSD 8.5e-10 TUSD / foot Median Estimate (USD): 1.25125 centUSD 0.00125 kUSD 1.25e-6 MUSD 1.25e-9 TUSD / foot High-End Estimate (USD): 3.00300 centUSD 0.003 kUSD 3.0e-6 MUSD 3.0e-9 TUSD / foot Time Required Low-End Estimate: 0.35 days9.582478e-4 years 8.4 hours 0.05 weeks 0.0115 months / job

233

An investigation of cement mortar thermal storage characteristics  

E-Print Network [OSTI]

energy storage characteristics of solid cement mortar cylinders. Two var1a- tions 1nvolving mechanically induced porosity were also investigated. Rocks, a commonly used sensible heat storage material, were tested to prov1de a reference for the cement... mortar. A numer1cal model, analogous to program available for rock bed storage systems, simulating the cement mortar cylinder storage section was developed. Heat transfer coefficients were calculated from the experimental data for use in the model...

Davis, Glenn Baker

2012-06-07T23:59:59.000Z

234

Climate VISION: Private Sector Initiatives: Cement: Resources and Links -  

Office of Scientific and Technical Information (OSTI)

Resources & Links Resources & Links Technical Information Publications Case Studies Publications Energy Efficiency and Carbon Dioxide Emission Reduction Opportunities in the U.S. Cement Industry, Ernest Orlando Lawrence Berkeley National Laboratory, September 1999 (PDF 330 KB) Download Acrobat Reader Energy Efficiency Improvement and Cost-Saving Opportunities for Cement Making, an ENERGY STAR Guide for Energy and Plant Managers, Ernest Orlando Lawrence Berkeley National Laboratory, January 2004 (PDF 471 KB). Download Acrobat Reader This report presents information on the opportunities for energy and cost savings in a cement plant and assists energy and plant managers to strategically manage energy. Energy and Emission Reduction Opportunities for the Cement Industry, BCS,

235

Energy Efficiency Improvement Opportunities for the Cement Industry  

E-Print Network [OSTI]

Lime Institute. 2001. Energy Efficiency Opportunity Guide inIndustry, Office of Energy Efficiency, Natural Resourcesof a Cement Kiln, Energy Efficiency Demonstration Scheme,

Worrell, Ernst

2008-01-01T23:59:59.000Z

236

Effect of alkalis and sulfates on Portland cement systems.  

E-Print Network [OSTI]

??The effect of the sulfates and alkalis on the durability of Portland cement systems was investigated through a series of cube and prism mixes. Durability… (more)

Halaweh, Mahmoud

2006-01-01T23:59:59.000Z

237

Energy Efficiency Improvement Opportunities for the Cement Industry  

E-Print Network [OSTI]

on Power Generation by Waste Heat of the Kiln in NingguoPure Low Temperature & Waste Heat in Beijing Cement Ltd. ;flash distillation waste heat power generation demonstration

Worrell, Ernst

2008-01-01T23:59:59.000Z

238

Application of solid ash based catalysts in heterogeneous catalysis  

SciTech Connect (OSTI)

Solid wastes, fly ash, and bottom ash are generated from coal and biomass combustion. Fly ash is mainly composed of various metal oxides and possesses higher thermal stability. Utilization of fly ash for other industrial applications provides a cost-effective and environmentally friendly way of recycling this solid waste, significantly reducing its environmental effects. On the one hand, due to the higher stability of its major component, aluminosilicates, fly ash could be employed as catalyst support by impregnation of other active components for various reactions. On the other hand, other chemical compounds in fly ash such as Fe{sub 2}O{sub 3} could also provide an active component making fly ash a catalyst for some reactions. In this paper, physicochemical properties of fly ash and its applications for heterogeneous catalysis as a catalyst support or catalyst in a variety of catalytic reactions were reviewed. Fly-ash-supported catalysts have shown good catalytic activities for H{sub 2} production, deSOx, deNOx, hydrocarbon oxidation, and hydrocracking, which are comparable to commercially used catalysts. As a catalyst itself, fly ash can also be effective for gas-phase oxidation of volatile organic compounds, aqueous-phase oxidation of organics, solid plastic pyrolysis, and solvent-free organic synthesis. 107 refs., 4 figs., 2 tabs.

Shaobin Wang [Curtin University of Technology, Perth, WA (Australia). Department of Chemical Engineering

2008-10-01T23:59:59.000Z

239

Ash fusibility and compositional data of solid recovered fuels  

Science Journals Connector (OSTI)

Several approaches are established to analyse the fouling and slagging propensities of coal ashes, but the same cannot be said of solid recovered fuel (SRF) ashes. This work has been conducted by using some fouling and slagging indicators, which are commonly applicable to coal ashes, on SRF ashes to ascertain their applicability. In this work, laboratory prepared ashes derived from municipal solid waste (MSW), sewage sludge, demolition wood, shredded rubber tyres, and plastic/paper fluff are analysed for their fusibility leading to fouling and slagging using three approaches; the ash fusibility temperatures (AFT), ternary phase diagrams, and fouling/slagging indices. The results from each approach are examined to determine the inclination of the ashes toward fouling and slagging. A subsequent inter-comparison of the methods was conducted to validate the methods which are in agreement and are applicable to SRF ashes. The study showed that ternary equilibrium phase diagram SiO2–CaO–Al2O3, various fouling and slagging indices, and AFT can be used to complement each other to predict ash fusion properties, fouling and slagging propensities of SRF ashes.

Gregory Dunnu; Jörg Maier; Günter Scheffknecht

2010-01-01T23:59:59.000Z

240

Manufacture of ceramic tiles from fly ash  

DOE Patents [OSTI]

The present invention relates to a process for forming glass-ceramic tiles. Fly ash containing organic material, metal contaminants, and glass forming materials is oxidized under conditions effective to combust the organic material and partially oxidize the metallic contaminants and the glass forming materials. The oxidized glass forming materials are vitrified to form a glass melt. This glass melt is then formed into tiles containing metallic contaminants. 6 figs.

Hnat, J.G.; Mathur, A.; Simpson, J.C.

1999-08-10T23:59:59.000Z

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

E-Print Network [OSTI]

the production costs of all waste- burning cement kilns, andthree cement plants are burning waste fuels. Beijing Cementof waste; the plant is burning solid waste from the chemical

Price, Lynn

2010-01-01T23:59:59.000Z

242

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

E-Print Network [OSTI]

Wang, L. , 2008. Alternative fuel using and waste materialPolicy Research on Alternative Fuels for Cement Industry incement and using alternative fuels in the cement kiln. There

Price, Lynn

2010-01-01T23:59:59.000Z

243

Does the Addition of Fly Ash to Concrete Present a Radon Hazard? J. A. Siegel1  

E-Print Network [OSTI]

Street, Suite 450, Austin, Texas, 78701, USA Summary: Fly ash, a waste material from coal-fired power of fly ash [9]. Fly ash is a waste material from coal fired power plants; when added to concrete, fly ashDoes the Addition of Fly Ash to Concrete Present a Radon Hazard? J. A. Siegel1 , M. Juenger1 and J

Siegel, Jeffrey

244

Factors Controlling the Solubility of Mercury Adsorbed on Fly Ash  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

N:\R&D_Projects_Partial\FlyAsh&CCBs\Meetings\2005_04_WorldOfCoalAsh\AnnKim\HgSol N:\R&D_Projects_Partial\FlyAsh&CCBs\Meetings\2005_04_WorldOfCoalAsh\AnnKim\HgSol ubility_Paper.doc Factors Controlling the Solubility of Mercury Adsorbed on Fly Ash Ann G. Kim 1 and Karl Schroeder 2 1 ORISE Research Fellow, National Energy Technology Laboratory, U.S. Department of Energy, 626 Cochrans Mill Rd., Pittsburgh, PA 15236-0940 2 Research Group Leader, National Energy Technology Laboratory, U.S. Department of Energy, 626 Cochrans Mill Rd., Pittsburgh, PA 15236-0940 KEYWORDS Coal Utilization By-Products, leaching, activated carbon, pH ABSTRACT It is expected that increased controls on Hg emissions will shift the environmental burden from the flue gas to the solid coal utilization by-products (CUB), such as fly ash and flue-gas

245

Communication Electric polarization in carbon fiber-reinforced cement  

E-Print Network [OSTI]

Communication Electric polarization in carbon fiber-reinforced cement Sihai Wen, D.D.L. Chung Abstract Electric polarization induced an increase of the measured electrical resistivity of carbon fiber of the cement paste through the use of carbon fibers that were more crystalline, the increase of the fiber

Chung, Deborah D.L.

246

Two-dimensional computational simulation of eccentric annular cementing displacements  

Science Journals Connector (OSTI)

......1 etudes et Productions Schlumberger...cementing of an oil well. The...in the far field. The narrow...Etudes et Productions Schlumberger...cementing of an oil well. The...can expect a cumulative error of size...design in a field setting. Thus...certain heavy oils in porous media......

S. Pelipenko; I. A. Frigaard

2004-12-01T23:59:59.000Z

247

Waste Heat Recovery in Cement Plants By Fluidized Beds  

E-Print Network [OSTI]

. This is particularly true in the cement industry. Cement manufacture consists of mining and grinding rocks, melting them to form clinkers, then grinding those clinkers to a powder. Through recovery of waste heat and inclusion of technology such as flash calciners...

Fraley, L. D.; Ksiao, H. K.; Thunem, C. B.

1984-01-01T23:59:59.000Z

248

General Groves takes charge  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Gates were erected on the main roads and hiring began. The 29 th person hired was Ed Westcott. Ed was the official photographer. Without Ed we would not have the historical record...

249

NETL: Utilization Projects - Managing High-Carbon Ash  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Managing High-Carbon Ash Managing High-Carbon Ash Task 1: Effect of Coal Quality The objective of this task is to assess if fuel selection is an important factor determining ash quality. Work on this task will involve each of the three participating organizations. Ash samples from three coals will be generated under identical firing conditions in the pilot furnace at the University of Utah, and the matching ash and coal samples sent to Brown. Additional matching sets of coal and ash will be obtained from commercial-scale firing at Southern Company. The ashes will be characterized for LOI and surfactant adsorption activity under standard conditions and trends with fuel type identified. At the same time, chars will be prepared from the matching coal set under standard conditions in a laboratory furnace and also characterized for surfactant adsorptivity. A variety of standard conditions may need to be explored. The combined data set will be analyzed to determine cross correlations between ash behavior, standard laboratory char behavior, and parent coal properties. Our goal is to be able to anticipate ash behavior either (a) from coal properties directly, or (b) from the properties of chars made by a simple laboratory procedure. Either could be the basis for a coal quality index -- one based on fuel properties and the other based on a simple screening test.

250

Development of an Accelerated Ash-Loading Protocol for Diesel...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Ash Loading Protocol Rapid Aging and Poisoning Protocols to AssessFuel and Lube Effects on Diesel Aftertreatment (Agreement 13415) Neutron Imaging of Advanced Engine Technologies...

251

Determination of Ash in Biomass: Laboratory Analytical Procedure...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ash in Biomass Laboratory Analytical Procedure (LAP) Issue Date: 7172005 A. Sluiter, B. Hames, R. Ruiz, C. Scarlata, J. Sluiter, and D. Templeton Technical Report NREL...

252

Development of an Accelerated Ash-Loading Protocol for Diesel...  

Broader source: Energy.gov (indexed) [DOE]

Accelerated Ash-Loading Protocol for Diesel Particulate Filters Bruce G. Bunting and Todd J. Toops Oak Ridge National Laboratory Adam Youngquist and Ke Nguyen University of...

253

Data Summary Report for Hanford Site Coal Ash Characterization  

SciTech Connect (OSTI)

The purpose of this report is to present data and findings from sampling and analysis of five distinct areas of coal ash within the Hanford Site River Corridor

Sulloway, H. M.

2012-03-06T23:59:59.000Z

254

Magnesium phosphate glass cements with ceramic-type properties  

DOE Patents [OSTI]

Rapid setting magnesium phosphate (Mg glass) cementitious materials consisting of magnesium phosphate cement paste, polyborax and water-saturated aggregate exhibiting rapid setting and high early strength characteristics. The magnesium glass cement is prepared from a cation-leachable powder and a bivalent metallic ion-accepting liquid such as an aqueous solution of diammonium phosphate and ammonium polyphosphate. The cation-leachable powder includes a mixture of two different magnesium oxide powders processed and sized differently which when mixed with the bivalent metallic ion-accepting liquid provides the magnesium glass cement consisting primarily of magnesium ortho phosphate tetrahydrate, with magnesium hydroxide and magnesium ammonium phosphate hexahydrate also present. The polyborax serves as a set-retarder. The resulting magnesium mono- and polyphosphate cements are particularly suitable for use as a cementing matrix in rapid repair systems for deteriorated concrete structures as well as construction materials and surface coatings for fireproof structures.

Sugama, Toshifumi (Mastic Beach, NY); Kukacka, Lawrence E. (Port Jefferson, NY)

1984-03-13T23:59:59.000Z

255

Magnesium-phosphate-glass cements with ceramic-type properties  

DOE Patents [OSTI]

Rapid setting magnesium phosphate (Mg glass) cementitious materials consisting of magnesium phosphate cement paste, polyborax and water-saturated aggregate, exhibits rapid setting and high early strength characteristics. The magnesium glass cement is prepared from a cation-leachable powder and a bivalent metallic ion-accepting liquid such as an aqueous solution of diammonium phosphate and ammonium polyphosphate. The cation-leachable powder includes a mixture of two different magnesium oxide powders processed and sized differently which when mixed with the bivalent metallic ion-accepting liquid provides the magnesium glass cement consisting primarily of magnesium ortho phosphate tetrahydrate, with magnesium hydroxide and magnesium ammonium phosphate hexahydrate also present. The polyborax serves as a set-retarder. The resulting magnesium mono- and polyphosphate cements are particularly suitable for use as a cementing matrix in rapid repair systems for deteriorated concrete structures as well as construction materials and surface coatings for fireproof structures.

Sugama, T.; Kukacka, L.E.

1982-09-23T23:59:59.000Z

256

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

E-Print Network [OSTI]

like blast furnace slag, fly ash, coal gangue, limestone,In ordinary VSKs, high-ash anthracite coal and raw materialsAsh Limestone Gypsum Other (please specify) Other (please specify) Total Yearly Energy Consumption (ton) Coal

Price, Lynn

2010-01-01T23:59:59.000Z

257

Reburning Characteristics of Residual Carbon in Fly Ash from CFB Boilers  

Science Journals Connector (OSTI)

The content of residual carbon in fly ash of CFB boilers is a litter high especially when ... of fly ash through collection, recirculation in CFB furnace or external combustor is a possibly ... ash and correspond...

S. H. Zhang; H. H. Luo; H. P. Chen…

2010-01-01T23:59:59.000Z

258

Utilization of Ash Fractions from Alternative Biofuels used in Power Plants  

E-Print Network [OSTI]

Utilization of Ash Fractions from Alternative Biofuels used in Power Plants PSO Project No. 6356 July 2008 Renewable Energy and Transport #12;2 Utilization of Ash Fractions from Alternative Biofuels)...............................................................................7 2. Production of Ash Products from Mixed Biofuels

259

Arsenic remediation of drinking water using iron-oxide coated coal bottom ash  

E-Print Network [OSTI]

using Iron-oxide Coated Coal Ash. In Arsenic Contaminationarea to volume ratio of coal ash is 200 times greater than1 mm diameters and spherical coal ash particles with 5 ?m

MATHIEU, JOHANNA L.

2010-01-01T23:59:59.000Z

260

Coal Fly Ash as a Source of Iron in Atmospheric Dust. | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Coal Fly Ash as a Source of Iron in Atmospheric Dust. Coal Fly Ash as a Source of Iron in Atmospheric Dust. Abstract: Anthropogenic coal fly ash aerosols may represent a...

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Seasonal effects of volatile oils in ashe and redberry juniper on preference and digestibility by goats  

E-Print Network [OSTI]

(qnodon dactylon (L.) Pers.), ashe juniper (Juniperus ashei Buchholz) and live Oak [Quercus virginiana (Small) Sarg. var. fusiformis] during the spring and fall. Angora and Spanish goats were exposed to ashe female, ashe male, redberry female and redberry...

Riddle, Richard R.

1994-01-01T23:59:59.000Z

262

Experimental Study on Ash-Returned Reactor of CFB Atmospheric Air Gasifier  

Science Journals Connector (OSTI)

In an attempt to improve the gasification efficiency and decrease the carbon content in fly ash of atmospheric air CFB gasifiers, an innovatory equipment by name ash-returned ... ash, and hence the coal conversio...

Zhang Shihong; Tian Luning; Zhou Xianrong…

2010-01-01T23:59:59.000Z

263

E-Print Network 3.0 - aluminum-fly ash metal Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

extent, bottom ash, contain elevated amounts of heavy metals, and fly ash... . The dioxinsfurans on ash then don't seem to create an environmental problem. Heavy metals are...

264

Arsenic remediation of drinking water using iron-oxide coated coal bottom ash  

E-Print Network [OSTI]

using Iron-oxide Coated Coal Ash. In Arsenic Contaminationwater using  iron?oxide coated coal bottom ash  Johanna L.  using iron-oxide coated coal bottom ash JOHANNA L. MATHIEU

MATHIEU, JOHANNA L.

2010-01-01T23:59:59.000Z

265

A Review of Emerging Energy-efficiency and CO2 Emission-reduction Technologies for Cement and Concrete Production  

E-Print Network [OSTI]

Fly Ash Concrete. 2005 World of Coal Ash (WOCA), Lexington,Concrete. 2011 World of Coal Ash (WOCA) Conference – May 9-Materials Fly ash is a byproduct of coal burning that can

Hasanbeigi, Ali

2014-01-01T23:59:59.000Z

266

Coal Ash Corrosion Resistant Materials Testing  

SciTech Connect (OSTI)

In April 1999, three identical superheater test sections were installed into the Niles Unit No.1 for the purpose of testing and ranking the coal ash corrosion resistance of candidate superheater alloys. The Niles boiler burns high sulfur coal (3% to 3.5%) that has a reasonably high alkali content, thus the constituents necessary for coal ash corrosion are present in the ash. The test sections were controlled to operate with an average surface metal temperature from approximately 1060 F to 1210 F which was well within the temperature range over which coal ash corrosion occurs. Thus, this combination of aggressive environment and high temperature was appropriate for testing the performance of candidate corrosion-resistant tube materials. Analyses of the deposit and scale confirmed that the aggressive alkali-iron-trisulfate constituent was present at the metal surface and active in tube metal wastage. The test sections were constructed so that the response of twelve different candidate tube and/or coating materials could be studied. The plan was to remove and evaluate one of the three test sections at time intervals of 1 year, 3 years, and 5 years. This would permit an assessment of performance of the candidate materials as a function of time. This report provides the results of the evaluation of Test Section C, including the samples that remained in the Test Section for the full exposure period as well as those that were removed early. The analysis of Test Section C followed much the same protocol that was employed in the assessment of Test Section A. Again, the focus was on determining and documenting the relative corrosion rates of the candidate materials. The detailed results of the investigation are included in this report as a series of twelve appendices. Each appendix is devoted to the performance of one of the candidate alloys. The table below summarizes metal loss rate for the worst case sample of each of the candidate materials for both Test Sections A and C. The body of this report compares these for all of the samples in the test section. The 'Coal Ash Corrosion Resistant Materials Testing Program' is being conducted by The Babcock & Wilcox Company (B&W), the U.S. Department of Energy (DOE) and the Ohio Coal Development Office (OCDO) at Reliant Energy's Niles plant in Niles, Ohio to provide full-scale, in-situ testing of recently developed boiler superheater materials. Fireside corrosion is a key issue for improving efficiency of new coal fired power plants and improving service life in existing plants. In November 1998, B&W began development of a system to permit testing of advanced tube materials at metal temperatures typical of advanced supercritical steam temperatures (1100 F and higher) in a boiler exhibiting coal ash corrosive conditions. Several materials producers including Oak Ridge National Laboratory (ORNL) contributed advanced materials to the project. In the spring of 1999 a system consisting of three identical sections, each containing multiple segments of twelve different materials, was installed. The sections are cooled by reheat steam, and are located just above the furnace entrance in Niles Unit No.1, a 110 MWe unit firing high sulfur Ohio coal. In November 2001 the first section was removed for thorough metallurgical evaluation after 29 months of operation. The second section was removed in August of 2003. Its evaluation has been completed and is the subject of this report. The final section remains in service and is expected to be removed in the spring of 2005. This paper describes the program; its importance, the design, fabrication, installation and operation of the test system, materials utilized, and experience to date. This report briefly reviews the results of the evaluation of the first section and then presents the results of the evaluation of the second section.

D. K. McDonald; P. L. Daniel; D. J. DeVault

2003-08-31T23:59:59.000Z

267

Early containment of high-alkaline solution simulating low-level radioactive waste stream in clay-bearing blended cement  

SciTech Connect (OSTI)

Portland cement blended with fly ash and attapulgite clay was mixed with high-alkaline solution simulating low-level radioactive waste stream at a one-to-one weight ratio. Mixtures were adiabatically and isothermally cured at various temperatures and analyzed for phase composition, total alkalinity, pore solution chemistry, and transport properties as measured by impedance spectroscopy. Total alkalinity is characterized by two main drops. The early one corresponds to a rapid removal of phosphorous, aluminum, sodium, and to a lesser extent potassium solution. The second drop from about 10 h to 3 days is mainly associated with the removal of aluminum, silicon, and sodium. Thereafter, the total alkalinity continues descending, but at a lower rate. All pastes display a rapid flow loss that is attributed to an early precipitation of hydrated products. Hemicarbonate appears as early as one hour after mixing and is probably followed by apatite precipitation. However, the former is unstable and decomposes at a rate that is inversely related to the curing temperature. At high temperatures, zeolite appears at about 10 h after mixing. At 30 days, the stabilized crystalline composition Includes zeolite, apatite and other minor amounts of CaCO{sub 3}, quartz, and monosulfate Impedance spectra conform with the chemical and mineralogical data. The normalized conductivity of the pastes shows an early drop, which is followed by a main decrease from about 12 h to three days. At three days, the permeability of the cement-based waste as calculated by Katz-Thompson equation is over three orders of magnitude lower than that of ordinary portland cement paste. However, a further decrease in the calculated permeability is questionable. Chemical stabilization is favorable through incorporation of waste species into apatite and zeolite.

Kruger, A.A. [Westinghouse Hanford Co., Richland, WA (United States); Olson, R.A.; Tennis, P.D. [Northwestern Univ., Evanston, IL (United States). Center for Advanced Cement-Based Materials] [and others

1995-04-01T23:59:59.000Z

268

Z .Chemical Geology 152 1998 257271 The thermal and cementation histories of a sandstone petroleum  

E-Print Network [OSTI]

Z .Chemical Geology 152 1998 257­271 The thermal and cementation histories of a sandstone petroleum of the cement formed, the maturation of petroleum in the interbedded shales likely postdates cementation. q 1998 of partially cemented petroleum reservoirs may help in constraining the physical character of a reservoir

269

Effect of Elevated Curing Temperature on Early Hydration and Microstructure of Composite Cements  

E-Print Network [OSTI]

Effect of Elevated Curing Temperature on Early Hydration and Microstructure of Composite Cements J, Seascale, Cumbria, CA20 1PG, UK Abstract The heat of hydration of a number of composite cement systems has of composite cements based on the partial replacement of Portland cement by waste materials has become

Sheffield, University of

270

Energy, environmental and greenhouse gas effects of using alternative fuels in cement production  

E-Print Network [OSTI]

1 Energy, environmental and greenhouse gas effects of using alternative fuels in cement to an increase of AF use from 8.7% to 20.9% of the total energy consumption. 2. One of the alternative fuels used cement industry produces about 3.3 billion tonnes of cement annually. Cement production is energy

Columbia University

271

Uncovering Fundamental Ash-Formation Mechanisms and Potential Means to Control the Impact on DPF Performance and Engine Efficiency  

Broader source: Energy.gov [DOE]

Results illustrate ash particle growth and formation pathways, and influence of lubricant chemistry and exhaust conditions on fundamental ash properties

272

E-Print Network 3.0 - ash cenospheres composites Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Composites Addition of fly ash cenospheres to polymer matrix influences all... , polyethylene, etc.). The effects of addition of fly ash cenospheres on polymer composites...

273

E-Print Network 3.0 - ash slag silica Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Engineering ; Materials Science 91 By-Products Utilization Summary: pozzolans include coal fly ash, blast furnace slag, silica fume, and other combustion ashes. When...

274

E-Print Network 3.0 - ash deposition propensities Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ash, fouling, co-combustion 1... ;5 relative compositions of major ash species in coal, ... Source: Hawaii Natural Energy Institute Collection: Renewable Energy 51...

275

E-Print Network 3.0 - ash deposits part Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of Reading Collection: Geosciences 24 Research Summary RECOAL: Reintegration of coal ash disposal sites and mitigation Summary: being used for coal ash deposits....

276

E-Print Network 3.0 - ash char deposits Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ash, fouling, co-combustion 1... ;5 relative compositions of major ash species in coal, ... Source: Hawaii Natural Energy Institute Collection: Renewable Energy 86...

277

E-Print Network 3.0 - ash nasal lavage Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

to the people of North America for thousands of years. Of the nine ash... species, white ash (Fraxinus americana L.) and green ... Source: USDA, Forestry Service, Northern Research...

278

E-Print Network 3.0 - ash intranasal instillation Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Combustion Residue: Origins, Fate and Potential for Treatment Summary: in the form of ash (Liberti et al. 2005). The management of this ash presents a unique challenge... or...

279

Characterization of the Thermal Transport Through a Temporally-Varying Ash Layer.  

E-Print Network [OSTI]

??Ash deposits in commercial coal-fired boilers frequently pose serious maintenance challenges and decrease thermal efficiency. A better understanding of fundamental thermal transport properties in ash… (more)

Cundick,Darron Palmer 1979-

2008-01-01T23:59:59.000Z

280

E-Print Network 3.0 - ash disposal area Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Engineering ; Materials Science 83 Use of fly ash as an admixture for electromagnetic interference shielding Jingyao Cao, D.D.L. Chung* Summary: combustion 1. Fly ash is...

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

E-Print Network 3.0 - ashe higher education Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

higher abrasion... Center for By-Products Utilization RECENT ADVANCES IN RECYCLING CLEAN- COAL ASH By Tarun R. Naik... -Strength Materials (CLSM); 232, Fly Ash and Natural...

282

E-Print Network 3.0 - ash quarterly technical Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Utilization Summary: Center for By-Products Utilization RECENT ADVANCES IN RECYCLING CLEAN- COAL ASH By Tarun R. Naik... -Strength Materials (CLSM); 232, Fly Ash and Natural...

283

E-Print Network 3.0 - ash paving demonstration Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AND DEMONSTRATION... Center for By-Products Utilization RECENT ADVANCES IN RECYCLING CLEAN- COAL ASH By Tarun R. Naik... -Strength Materials (CLSM); 232, Fly Ash and Natural...

284

E-Print Network 3.0 - ash penurunan kadar Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Utilization Summary: Center for By-Products Utilization RECENT ADVANCES IN RECYCLING CLEAN- COAL ASH By Tarun R. Naik... -Strength Materials (CLSM); 232, Fly Ash and Natural...

285

E-Print Network 3.0 - ashes Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Utilization Summary: Center for By-Products Utilization RECENT ADVANCES IN RECYCLING CLEAN- COAL ASH By Tarun R. Naik... -Strength Materials (CLSM); 232, Fly Ash and Natural...

286

E-Print Network 3.0 - ash ahto lobjakas Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Utilization Summary: Center for By-Products Utilization RECENT ADVANCES IN RECYCLING CLEAN- COAL ASH By Tarun R. Naik... -Strength Materials (CLSM); 232, Fly Ash and Natural...

287

E-Print Network 3.0 - ash Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Utilization Summary: Center for By-Products Utilization RECENT ADVANCES IN RECYCLING CLEAN- COAL ASH By Tarun R. Naik... -Strength Materials (CLSM); 232, Fly Ash and Natural...

288

E-Print Network 3.0 - ash projekt vaendoera Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Utilization Summary: Center for By-Products Utilization RECENT ADVANCES IN RECYCLING CLEAN- COAL ASH By Tarun R. Naik... -Strength Materials (CLSM); 232, Fly Ash and Natural...

289

Study of ash deposition during coal combustion under oxyfuel conditions  

Science Journals Connector (OSTI)

This paper presents a comparative study on ash deposition of two selected coals, Russian coal and lignite, under oxyfuel (O2/CO2) and air combustion conditions. The comparison is based on experimental results and subsequent evaluation of the data and observed trends. Deposited as well as remaining filter ash (fine ash) samples were subjected to XRD and ICP analyses in order to study the chemical composition and mineral transformations undergone in the ash under the combustion conditions. The experimental results show higher deposition propensities under oxyfuel conditions; the possible reasons for this are investigated by analyzing the parameters affecting the ash deposition phenomena. Particle size seems to be larger for the Russian coal oxy-fired ash, leading to increased impaction on the deposition surfaces. The chemical and mineralogical compositions do not seem to differ significantly between air and oxyfuel conditions. The differences in the physical properties of the flue gas between air combustion and oxyfuel combustion, e.g. density, viscosity, molar heat capacity, lead to changes in the flow field (velocities, particle trajectory and temperature) that together with the ash particle size shift seem to play a role in the observed ash deposition phenomena.

L. Fryda; C. Sobrino; M. Glazer; C. Bertrand; M. Cieplik

2012-01-01T23:59:59.000Z

290

The recycling of the coal fly ash in glass production  

SciTech Connect (OSTI)

The recycling of fly ash obtained from the combustion of coal in thermal power plant has been studied. Coal fly ash was vitrified by melting at 1773 K for 5 hours without any additives. The properties of glasses produced from coal fly ash were investigated by means of Differential Thermal Analysis (DTA), X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) techniques. DTA study indicated that there was only one endothermic peak at 1003 K corresponding to the glass transition temperature. XRD analysis showed the amorphous state of the glass sample produced from coal fly ash. SEM investigations revealed that the coal fly ash based glass sample had smooth surface. The mechanical, physical and chemical properties of the glass sample were also determined. Recycling of coal fly ash by using vitrification technique resulted to a glass material that had good mechanical, physical and chemical properties. Toxicity characteristic leaching procedure (TCLP) results showed that the heavy metals of Pb, Cr, Zn and Mn were successfully immobilized into the glass. It can be said that glass sample obtained by the recycling of coal fly ash can be taken as a non-hazardous material. Overall, results indicated that the vitrification technique is an effective way for the stabilization and recycling of coal fly ash.

Erol, M.M.; Kucukbayrak, S.; Ersoy-Mericboyu, A. [Istanbul Technical University, Istanbul (Turkey). Dept. of Chemical Engineering

2006-09-15T23:59:59.000Z

291

Reactivity of fly ashes in a spray dryer FGD process  

SciTech Connect (OSTI)

During the period 1981-1982, a study was performed to determine the ability of various fly ashes to retain sulfur dioxide in a pilot plant spray dryer/fabric filter flue gas desulfurization system. This knowledge would provide design engineers with the necessary data to determine whether the fly ash from a particular utility could be used as an effective supplement or substitute for slaked lime in a spray dryer system. The study commenced with the collection of 22 fly ashes from lignite, subbituminous, and bituminous eastern and western coals. The ashes were contacted with the flue gas entering the pilot plant by two different techniques. In the first, the ashes were slurried in water and injected into the spray dryer through a spinning disk atomizer. In the second, the ashes were injected as a dry additive into the flue gas upstream of the spray dryer. Analyses were conducted to determine the ability of each ash to retain sulfur dioxide in the system followed by statistical correlations of the sulfur retention with the physical/chemical properties of each ash. 17 references, 32 figures, 19 tables.

Davis, W.T.; Reed, G.D.

1983-05-01T23:59:59.000Z

292

IN HARM'S WAY: Lack Of Federal Coal Ash  

E-Print Network [OSTI]

IN HARM'S WAY: Lack Of Federal Coal Ash Regulations Endangers Americans And Their Environment 2010 Thirty-nine New Damage Cases of Contamination from Improperly Disposed Coal Combustion Waste, Editor and Contributing Author #12;IN HARM'S WAY: Lack of Federal Coal Ash Regulations Endangers

Short, Daniel

293

Energy Efficiency Improvement Opportunities for the Cement Industry  

SciTech Connect (OSTI)

This report provides information on the energy savings, costs, and carbon dioxide emissions reductions associated with implementation of a number of technologies and measures applicable to the cement industry. The technologies and measures include both state-of-the-art measures that are currently in use in cement enterprises worldwide as well as advanced measures that are either only in limited use or are near commercialization. This report focuses mainly on retrofit measures using commercially available technologies, but many of these technologies are applicable for new plants as well. Where possible, for each technology or measure, costs and energy savings per tonne of cement produced are estimated and then carbon dioxide emissions reductions are calculated based on the fuels used at the process step to which the technology or measure is applied. The analysis of cement kiln energy-efficiency opportunities is divided into technologies and measures that are applicable to the different stages of production and various kiln types used in China: raw materials (and fuel) preparation; clinker making (applicable to all kilns, rotary kilns only, vertical shaft kilns only); and finish grinding; as well as plant wide measures and product and feedstock changes that will reduce energy consumption for clinker making. Table 1 lists all measures in this report by process to which they apply, including plant wide measures and product or feedstock changes. Tables 2 through 8 provide the following information for each technology: fuel and electricity savings per tonne of cement; annual operating and capital costs per tonne of cement or estimated payback period; and, carbon dioxide emissions reductions for each measure applied to the production of cement. This information was originally collected for a report on the U.S. cement industry (Worrell and Galitsky, 2004) and a report on opportunities for China's cement kilns (Price and Galitsky, in press). The information provided in this report is based on publicly-available reports, journal articles, and case studies from applications of technologies around the world.

Price, Lynn; Worrell, Ernst; Galitsky, Christina; Price, Lynn

2008-01-31T23:59:59.000Z

294

Ashe County - Wind Energy System Ordinance | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Ashe County - Wind Energy System Ordinance Ashe County - Wind Energy System Ordinance Ashe County - Wind Energy System Ordinance < Back Eligibility Agricultural Commercial Industrial Institutional Investor-Owned Utility Local Government Multi-Family Residential Municipal Utility Nonprofit Residential Rural Electric Cooperative Schools State Government Tribal Government Utility Savings Category Wind Buying & Making Electricity Program Info State North Carolina Program Type Solar/Wind Permitting Standards Provider Ashe County Planning Department In 2007 Ashe County adopted a wind ordinance to regulate the use of wind-energy systems in unincorporated areas of the county and to describe the conditions by which a permit for installing such a system may be obtained. This policy was adopted in the context of an ongoing debate over

295

Purple traps yield Reservation's first detection of Emerald Ash Borer  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

traps yield Reservation's first detection of Emerald Ash Borer traps yield Reservation's first detection of Emerald Ash Borer The question of whether or not DOE's forests are infested with Emerald Ash Borer (EAB) has been answered. On May 10, a trap on Highway 95 at the Highway 58 interchange produced the first instance of the destructive non-native insect in Roane County. Five days later, a second trap on Bethel Valley Road near the East Portal turned up the first capture in Anderson County. "Unfortunately, these finds signal the beginning of a decline of ash species throughout the reservation" according to Greg Byrd, forester with the ORNL Natural Resources Program. "Dieback will become more prominent as the insect populations expand. Native ash trees have little defense against this pest, which was

296

State Waste Discharge Permit application: 200-E Powerhouse Ash Pit  

SciTech Connect (OSTI)

As part of the Hanford Federal Facility Agreement and Consent Order negotiations, the US Department and Energy, Richland Operations Office, the US Environmental Protection Agency, and the Washington State Department of Ecology agreed that liquid effluent discharges to the ground on the Hanford Site which affect groundwater or have the potential to affect groundwater would be subject to permitting under the structure of Chapter 173-216 (or 173-218 where applicable) of the Washington Administrative Code, the State Waste Discharge Permit Program. This document constitutes the State Waste Discharge Permit application for the 200-E Powerhouse Ash Pit. The 200-E Powerhouse Ash Waste Water discharges to the 200-E Powerhouse Ash Pit via dedicated pipelines. The 200-E Ash Waste Water is the only discharge to the 200-E Powerhouse Ash Pit. The 200-E Powerhouse is a steam generation facility consisting of a coal-handling and preparation section and boilers.

Atencio, B.P.

1994-06-01T23:59:59.000Z

297

State Waste Discharge Permit application: 200-W Powerhouse Ash Pit  

SciTech Connect (OSTI)

As part of the Hanford Federal Facility Agreement and Consent Order negotiations; the US Department of Energy, Richland Operations Office, the US Environmental Protection Agency, and the Washington State Department of Ecology agreed that liquid effluent discharges to the ground on the Hanford Site which affect groundwater or have the potential to affect groundwater would be subject to permitting under the structure of Chapter 173-216 (or 173-218 where applicable) of the Washington Administrative Code, the State Waste Discharge Permit Program. This document constitutes the State Waste Discharge Permit application for the 200-W Powerhouse Ash Pit. The 200-W Powerhouse Ash Waste Water discharges to the 200-W Powerhouse Ash Pit via dedicated pipelines. The 200-W Powerhouse Ash Waste Water is the only discharge to the 200-W Powerhouse Ash Pit. The 200-W Powerhouse is a steam generation facility consisting of a coal-handling and preparation section and boilers.

Atencio, B.P.

1994-06-01T23:59:59.000Z

298

STRATEGIES AND TECHNOLOGY FOR MANAGING HIGH-CARBON ASH  

SciTech Connect (OSTI)

The overall objective of the present project is to identify and assess strategies and solutions for the management of industry problems related to carbon in ash. Specific research issues to be addressed include: (1) the effect of parent fuel selection on ash properties and adsorptivity, including a first ever examination of the air entrainment behavior of ashes from alternative (non-coal) fuels; (2) the effect of various low-NOx firing modes on ash properties and adsorptivity; and (3) the kinetics and mechanism of ash ozonation. This data will provide scientific and engineering support of the ongoing process development activities. During this fourth project period we completed the characterization of ozone-treated carbon surfaces and wrote a comprehensive report on the mechanism through which ozone suppresses the adsorption of concrete surfactants.

Robert Hurt; Eric Suuberg; John Veranth; Xu Chen

2003-05-20T23:59:59.000Z

299

STRATEGIES AND TECHNOLOGY FOR MANAGING HIGH-CARBON ASH  

SciTech Connect (OSTI)

The overall objective of the present project is to identify and assess strategies and solutions for the management of industry problems related to carbon in ash. Specific research issues to be addressed include: (1) the effect of parent fuel selection on ash properties and adsorptivity, including a first ever examination of the air entrainment behavior of ashes from alternative (non-coal) fuels; (2) the effect of various low-NOx firing modes on ash properties and adsorptivity; and (3) the kinetics and mechanism of ash ozonation. This data will provide scientific and engineering support of the ongoing process development activities. During this fourth project period we completed the characterization of ozone-treated carbon surfaces and wrote a comprehensive report on the mechanism through which ozone suppresses the adsorption of concrete surfactants.

Robert Hurt; Eric Suuberg; John Veranth; Xu Chen

2002-09-10T23:59:59.000Z

300

Climate VISION: Private Sector Initiatives: Cement  

Office of Scientific and Technical Information (OSTI)

GHG Information GHG Information This section provides various sources describing the energy consumption of the industrial sector and the carbon emissions in particular. Below is an estimate of the emissions expressed in million metric tons of carbon equivalents (MMTCE) based upon the Annual Energy Outlook 2003. According to EIA "Annual Energy Outlook 2003" data, energy-related CO2 emissions for the cement industry were 8.3 MMTCE in 2002, and process-related CO2 emissions were approximately 11.4 MMTCE for a total of 19.7 MMTCE. (The AEO Supplementary tables were generated for the reference case of the Annual Energy Outlook 2003 using the National Energy Modeling System, a computer-based model which produces annual projections of energy markets for 2000-2025. The AEO2003 reflects data and information available as of

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Impact of solid fuel combustion technology on valence speciation of chromium in fly ash  

Science Journals Connector (OSTI)

Abstract Fly ash (FA) generated in real furnaces was used to evaluate the impact of the kind of the solid fuel burnt and combustion technology on chromium speciation, particularly the presence of Cr(III) and Cr(VI) forms as well as readily and hardly leachable chromium(VI) species in FAs. The \\{FAs\\} originated from a pulverized coal combustion boiler (PCC boiler), a fluidized bed combustion boiler (FBC boiler), a stoker-fired boiler (SF boiler), a municipal solid waste incinerator (MSWI), a cement rotary kiln (CRK) and a modern domestic boiler (DB). The speciation analysis of chromium was carried out by means of extraction followed by catalytic cathodic stripping voltammetry with adsorption of Cr(III)-DTPA complexes (CCSV-DTPA) for determination of Cr(VI) and AAS was used for determination of Cr content. It has been revealed that the antagonistic action of alkali metal compounds and iron oxides plays a crucial role in shaping valence speciation of chromium. According to the proposed transformation path of oxidation of Cr(III) to Cr(VI), hard coal combustion in an SF boiler, an FBC boiler or a domestic boiler will generate \\{FAs\\} with a low Cr(VI) level. Replacing fuel with biomass should create favorable conditions for generating FA enriched with Cr(VI). Relatively high concentrations of Cr(VI) can also be expected in FA generated in the process of high-temperature combustion of coal in PCC boilers.

Ryszard ?wietlik; Marzena Trojanowska; Monika ?o?y?ska; Artur Molik

2014-01-01T23:59:59.000Z

302

Effect of fuel properties on the bottom ash generation rate by a laboratory fluidized bed combustor  

SciTech Connect (OSTI)

The range of fuels that can be accommodated by an FBC boiler system is affected by the ability of the fuel, sorbent, and ash-handling equipment to move the required solids through the boiler. Of specific interest is the bottom ash handling equipment, which must have sufficient capacity to remove ash from the system in order to maintain a constant bed inventory level, and must have sufficient capability to cool the ash well below the bed temperature. Quantification of a fuel's bottom ash removal requirements can be useful for plant design. The effect of fuel properties on the rate of bottom ash production in a laboratory FBC test system was examined. The work used coal products ranging in ash content from 20 to 40+ wt. %. The system's classification of solids by particle size into flyash and bottom ash was characterized using a partition curve. Fuel fractions in the size range characteristic of bottom ash were further analyzed for distributions of ash content with respect to specific gravity, using float sink tests. The fuel fractions were then ashed in a fixed bed. In each case, the highest ash content fraction produced ash with the coarsest size consist (characteristic of bottom ash). The lower ash content fractions were found to produce ash in the size range characteristic of flyash, suggesting that the high ash content fractions were largely responsible for the production of bottom ash. The contributions of the specific gravity fractions to the composite ash in the fuels were quantified. The fuels were fired in the laboratory test system. Fuels with higher amounts of high specific gravity particles, in the size ranges characteristic of bottom ash, were found to produce more bottom ash, indicating the potential utility of float sink methods in the prediction of bottom ash removal requirements.

Rozelle, P.L.; Pisupati, S.V.; Scaroni, A.W. [Penn State University, University Park, PA (United States). Dept. of Energy & Geoenvironmental Engineering

2007-06-15T23:59:59.000Z

303

Massive Cement Pour into Hanford Site Nuclear Facility Underway: Recovery  

Broader source: Energy.gov (indexed) [DOE]

Massive Cement Pour into Hanford Site Nuclear Facility Underway: Massive Cement Pour into Hanford Site Nuclear Facility Underway: Recovery Act Funding Puts U Canyon in Home Stretch of Demolition Preparations Massive Cement Pour into Hanford Site Nuclear Facility Underway: Recovery Act Funding Puts U Canyon in Home Stretch of Demolition Preparations June 14, 2011 - 12:00pm Addthis Media Contacts Andre Armstrong, CH2M HILL Plateau Remediation Company (509) 376-6773 Andre_L_Armstrong@rl.gov Geoff Tyree, DOE (509) 376-4171 Geoffrey.Tyree@rl.doe.gov RICHLAND, Wash. - Hanford workers are pouring enough cement-like material to fill six Olympic-size wimming pools in one of the U.S. Department of Energy's (DOE) largest nuclear facilities at the Hanford Site in southeast Washington State to prepare the massive building for demolition.

304

Innovative cement helps DOE safeguard nuclear facilities | Argonne National  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Innovative cement helps DOE safeguard nuclear facilities Innovative cement helps DOE safeguard nuclear facilities By Jared Sagoff * April 25, 2008 Tweet EmailPrint ARGONNE, Ill. - When Argonne materials scientists Arun Wagh and Dileep Singh initially developed Ceramicrete®, a novel phosphate cement that stabilizes radioactive waste streams, they did not immediately recognize that with one or two extra ingredients, the cement could solve another problem in the nuclear complex. In the course of the development of the Ceramicrete technology, Wagh and Singh formed a multilayered collaboration among Argonne, the Russian Federal Nuclear Center (VNIIEF) in Sarov, Russia, and Ceradyne Boron Products LLC. This international scientific partnership created an unusually efficient nuclear shield that blocks the neutrons and gamma rays

305

Massive Cement Pour into Hanford Site Nuclear Facility Underway: Recovery  

Broader source: Energy.gov (indexed) [DOE]

Massive Cement Pour into Hanford Site Nuclear Facility Underway: Massive Cement Pour into Hanford Site Nuclear Facility Underway: Recovery Act Funding Puts U Canyon in Home Stretch of Demolition Preparations Massive Cement Pour into Hanford Site Nuclear Facility Underway: Recovery Act Funding Puts U Canyon in Home Stretch of Demolition Preparations June 14, 2011 - 12:00pm Addthis Media Contacts Andre Armstrong, CH2M HILL Plateau Remediation Company (509) 376-6773 Andre_L_Armstrong@rl.gov Geoff Tyree, DOE (509) 376-4171 Geoffrey.Tyree@rl.doe.gov RICHLAND, Wash. - Hanford workers are pouring enough cement-like material to fill six Olympic-size wimming pools in one of the U.S. Department of Energy's (DOE) largest nuclear facilities at the Hanford Site in southeast Washington State to prepare the massive building for demolition.

306

Categorical Exclusion 4566, Ash Removal Project  

Broader source: Energy.gov (indexed) [DOE]

FOrnI FOrnI Project Title: Ash Removal Project (4566) Program or Program Office: Y -12 Site Office Location: Oak Ridge Tennessee Project Description: This work scope is to split, containerize, package, transport and disposition one hundred and two (102) cans of mixed waste. General Administration/Management OA I - Routine business actions OA2 * Administrative contract amendments OA4 - Interpretations/rulings for existing regulations OA5 - Regulatory interpretations without environmental effect OA6 - Procedural rule makings upgrade OA 7 - Transfer of property, use unchanged OA8 . Award of technical supportlM&O/personal service contracts OA9 - Info gathering, analysis, documentation, dissemination, and training OA 10 - Reports on non-DOE legislation OA II -

307

Mutagenicity and genotoxicity of coal fly ash water leachate  

SciTech Connect (OSTI)

Fly ash is a by-product of coal-fired electricity generation plants. The prevalent practice of disposal is as slurry of ash and water to storage or ash ponds located near power stations. This has lain to waste thousands of hectares of land all over the world. Since leaching is often the cause of off-site contamination and pathway of introduction into the human environment, a study on the genotoxic effects of fly ash leachate is essential. Leachate prepared from the fly ash sample was analyzed for metal content, and tested for mutagenicity and genotoxicity. Analyses of metals show predominance of the metals - sodium, silicon, potassium, calcium, magnesium, iron, manganese, zinc, and sulphate. The Ames Salmonella mutagenicity assay, a short-term bacterial reverse mutation assay, was conducted on two-tester strains of Salmonella typhimurium strains TA97a and TA102. For genotoxicity, the alkaline version of comet assay on fly ash leachate was carried in vitro on human blood cells and in vivo on Nicotiana plants. The leachate was directly mutagenic and induced significantconcentration-dependent increases in DNA damage in whole blood cells, lymphocytes, and in Nicotiana plants. The comet parameters show increases in tail DNA percentage (%), tail length (mu m), and olive tail moment (arbitrary units). Our results indicate that leachate from fly ash dumpsites has the genotoxic potential and may lead to adverse effects on vegetation and on the health of exposed human populations.

Chakraborty, R.; Mukherjee, A. [University of Calcutta, Calcutta (India). Dept. of Botany

2009-03-15T23:59:59.000Z

308

Coal Ash Corrosion Resistant Materials Testing Program  

SciTech Connect (OSTI)

The "Coal Ash Corrosion Resistant Materials Testing Program" is being conducted by The Babcock & Wilcox Company (B&W), the U.S. Department of Energy (DOE) and the Ohio Coal Development Office (OCDO) at Reliant Energy?s Niles plant in Niles, Ohio to provide full-scale, in-situ testing of recently developed boiler superheater materials. Fireside corrosion is a key issue for improving efficiency of new coal fired power plants and improving service life in existing plants. In November 1998, B&W began development of a system to permit testing of advanced tube materials at metal temperatures typical of advanced supercritical steam temperatures (1100°F and higher) in a boiler exhibiting coal ash corrosive conditions. Several materials producers including Oak Ridge National Laboratory (ORNL) contributed advanced materials to the project. In the spring of 1999 a system consisting of three identical sections, each containing multiple segments of twelve different materials, was installed. The sections are cooled by reheat steam, and are located just above the furnace entrance in Niles? Unit #1, a 110 MWe unit firing high sulfur Ohio coal. In November 2001 the first section was removed for thorough metallurgical evaluation after 33 months of operation. The second and third sections remain in service and the second is expected to be removed in the fall of 2003; the last is tentatively planned for the fall of 2004. This paper describes the program; its importance; the design, fabrication, installation and operation of the test system; materials utilized; experience to date; and results of the evaluation of the first section.

McDonald, D.K.

2003-04-22T23:59:59.000Z

309

BEST-Cement for China | Open Energy Information  

Open Energy Info (EERE)

BEST-Cement for China BEST-Cement for China Jump to: navigation, search Tool Summary LAUNCH TOOL Name: BEST-Cement Agency/Company /Organization: Lawrence Berkeley National Laboratory Partner: Energy Research Institute, China Cement Association, China Building Materials Academy, Shandong University, U.S. Environmental Protection Agency, Energy Foundation, Dow Chemical Company Sector: Energy Focus Area: Industry Topics: Pathways analysis, Resource assessment Resource Type: Software/modeling tools User Interface: Desktop Application Website: china.lbl.gov/research/industry/benchmarking/best-cement/best-cement-c Country: China UN Region: Eastern Asia Coordinates: 35.86166°, 104.195397° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.86166,"lon":104.195397,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

310

Potential for energy conservation in the cement industry  

SciTech Connect (OSTI)

This report assesses the potential for energy conservation in the cement industry. Energy consumption per ton of cement decreased 20% between 1972 and 1982. During this same period, the cement industry became heavily dependent on coal and coke as its primary fuel source. Although the energy consumed per ton of cement has declined markedly in the past ten years, the industry still uses more than three and a half times the fuel that is theoretically required to produce a ton of clinker. Improving kiln thermal efficiency offers the greatest opportunity for saving fuel. Improving the efficiency of finish grinding offers the greatest potential for reducing electricity use. Technologies are currently available to the cement industry to reduce its average fuel consumption per ton by product by as much as 40% and its electricity consumption per ton by about 10%. The major impediment to adopting these technologies is the cement industry's lack of capital as a result of low or no profits in recent years.

Garrett-Price, B.A.

1985-02-01T23:59:59.000Z

311

Direct utilization - recovery of minerals from coal fly ash. Fossil Energy Program. Technical progress report, 1 July 1984-30 September 1984 including summary of work for FY84  

SciTech Connect (OSTI)

The research discussed in this report deals with resource recovery from coal conversion solid wastes. Progress is reported on two methods (the HiChlor and Lime-Sinter processes) for extracting metal values from power plant fly ash. Preliminary work is also reported on a method of making cement from the residue of the lime-sinter process. In the HiChlor Process, metal oxides in the fly ash are converted to volatile chlorides by reaction with chlorine in the presence of a reductant. Several versions of this approach are being investigated. The Lime-Sinter Process utilizes a solid state reaction to selectively convert the alumina in fly ash to a soluble form. Fly ash is mixed with limestone and a suitable mineralizer (to reduce the temperature required for sintering and to enhance alumina recovery) and then sintered in a high temperature kiln. Alumina is recovered by leaching the resulting clinker. A complex relationship between the calcium, alumina, silica, and sulfur constituents in the feed mixture controls the formation and extraction of aluminate compounds. Alumina recovery levels are enhanced by promoting the formation of less-soluble calcium compounds and/or more-soluble aluminum compounds. A study is underway to determine the degree to which flue gas scrubber sludge can be used both as a limestone substitute and as a sulfur bearing mineralizer. Results show that 20 to 25% of the limestone can be provided by the scrubber sludges. 25 refs.,25 figs., 10 tabs.

Burnet, G.; Murtha, M.J.; Benson, J.D.

1985-03-01T23:59:59.000Z

312

Distribution of arsenic and mercury in lime spray dryer ash  

SciTech Connect (OSTI)

The partitioning of As and Hg in various components of lime spray dryer (LSD) ash samples from a coal-fired boiler was characterized to better understand the form and fate of these elements in flue gas desulfurization byproducts. LSD ash samples, collected from the McCracken Power Plant on the Ohio State University campus, were separated by a 140-mesh (106 {mu}m) sieve into two fractions: a fly-ash-/unburned-carbon-enriched fraction (> 106 {mu}m) and a calcium-enriched fraction (< 106 {mu}m). Unburned carbon and fly ash in the material > 106 {mu}m were subsequently separated by density using a lithium heteropolytungstate solution. The concentrations of As and Hg were significant in all fractions. The level of As was consistently greater in the calcium-enriched fraction, while Hg was evenly distributed in all components of LSD ash. Specific surface area was an important factor controlling the distribution of Hg in the different components of LSD ash, but not for As. Comparing the LSD ash data to samples collected from the economizer suggests that As was effectively captured by fly ash at 600{sup o}C, while Hg was not. Leaching tests demonstrated that As and Hg were more stable in the calcium-enriched fraction than in the fly-ash- or carbon-enriched fractions, potentially because of the greater pH of the leachate and subsequently greater stability of small amounts of calcium solids containing trace elements in these fractions. 37 refs., 8 figs., 2 tabs.

Panuwat Taerakul; Ping Sun; Danold W. Golightly; Harold W. Walker; Linda K. Weavers [Ohio State University, Columbus, OH (United States). Department of Civil and Environmental Engineering and Geodetic Science

2006-08-15T23:59:59.000Z

313

Thermomechanical Analysis of Coal Ash:? The Influence of the Material for the Sample Assembly  

Science Journals Connector (OSTI)

Although the proposed temperatures were low compared to conventional AFTs, especially for iron-rich samples, the use of TMA appeared to be an excellent tool for routine characterization of ash fusibility of various coals. ... BN, C, and Al2O3 assemblies are not suitable in studying the thermal behavior of coal ashes due to reactions with components of the ash. ... ashing. ...

G. W. Bryant; G. J. Browning; S. K. Gupta; J. A. Lucas; R. P. Gupta; T. F. Wall

2000-02-25T23:59:59.000Z

314

Environmental hazard assessment of coal fly ashes using leaching and ecotoxicity tests  

E-Print Network [OSTI]

Environmental hazard assessment of coal fly ashes using leaching and ecotoxicity tests V. Tsiridis t The environmental hazard of six coal fly ash samples collected from various coal incineration plants were examined- bustion, considerable amounts of coal fly ash are still produced. Although coal fly ash can be moderately

Short, Daniel

315

Recovery of iron oxide from coal fly ash  

DOE Patents [OSTI]

A high quality iron oxide concentrate, suitable as a feed for blast and electric reduction furnaces is recovered from pulverized coal fly ash. The magnetic portion of the fly ash is separated and treated with a hot strong alkali solution which dissolves most of the silica and alumina in the fly ash, leaving a solid residue and forming a precipitate which is an acid soluble salt of aluminosilicate hydrate. The residue and precipitate are then treated with a strong mineral acid to dissolve the precipitate leaving a solid residue containing at least 90 weight percent iron oxide.

Dobbins, Michael S. (Ames, IA); Murtha, Marlyn J. (Ames, IA)

1983-05-31T23:59:59.000Z

316

10 - Assessing the environmental impact of conventional and ‘green’ cement production  

Science Journals Connector (OSTI)

Abstract: With the current focus on sustainability, it is necessary to evaluate cement’s environmental impact properly, especially when developing new ‘green’ concrete types. Therefore, this chapter investigates the available literature on every process involved during the production of cement and its alternatives. A detailed study of ordinary Portland cement’s environmental impacts is followed by an assessment of improvement potentials which can be achieved with the use of supplementary cementitious materials. Finally, the environmental impacts of alternative binders such as sulfoaluminate or magnesia cements as well as alkali activated binders are studied.

G. Habert

2014-01-01T23:59:59.000Z

317

The Development of a Small Engine Based Ash Loading Protocol  

Broader source: Energy.gov [DOE]

When 5% lubrication oil is added to diesel fuel in a small engine test, ash increases linearly and at the back of a filter, the amount depending on the differences in substrate and wash-coat type.

318

Determination of Total Solids and Ash in Algal Biomass: Laboratory...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Solids and Ash in Algal Biomass Laboratory Analytical Procedure (LAP) Issue Date: December 2, 2013 S. Van Wychen and L. M. L. Laurens Technical Report NRELTP-5100-60956 December...

319

Coal ash composition of Australian low rank coals  

Science Journals Connector (OSTI)

The iron-containing phases in nine precipitator ashes of widely differing composition have been analyzed by57Fe Mössbauer spectroscopy. The importance of the relative proportion of calcium ferrite to magnesioferr...

L. J. Brown; J. D. Cashion; R. C. Ledger

1992-04-01T23:59:59.000Z

320

INAA multielemental analysis of Nigerian bituminous coal and coal ash  

Science Journals Connector (OSTI)

Instrumental neutron activation analysis (INAA) was used to analyzed Nigerian bituminous coal and ash. Good statistical agreement (p...?0.05) between the literature and reported elemental values of USGS AGV-1 sam...

V. O. Ogugbuaja; W. D. James

1995-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Coal Ash from Thermal Power Plants in Finland  

Science Journals Connector (OSTI)

This review summarizes formation mechanisms of coal ash, its chemistry and use pattern in the Finnish industry. Coal is composed of organic and inorganic materials. The properties of coal varies from one region t...

Arun B. Mukherjee; Ryunosuke Kikuchi

1999-01-01T23:59:59.000Z

322

The mild hydrothermal synthesis of hydrogrossular from coal ash  

Science Journals Connector (OSTI)

In this study, an attempt was made to synthesize hydrogrossular, a group of garnet minerals, under hydrothermal conditions at temperatures below 180°C, using coal ash, which is the solid waste from thermal...

Satoru Fujita; Kenzi Suzuki; Yasuo Shibasaki

2002-04-01T23:59:59.000Z

323

Ultimate bearing capacity of footings on coal ash  

Science Journals Connector (OSTI)

Coal ash is recognized as an alternative fill material to the conventional natural soils near a coal fired thermal power station where its large ... This paper presents experimental investigations on footings on

Ashutosh Trivedi; Vijay Kumar Sud

2005-11-01T23:59:59.000Z

324

Recovery Act Workers Complete Environmental Cleanup of Coal Ash Basin  

Broader source: Energy.gov [DOE]

The Savannah River Site (SRS) recently cleaned up a 17-acre basin containing coal ash residues from Cold War operations. The American Recovery and Reinvestment Act project was safely completed at a...

325

Optical properties of fly ash. Volume 2, Final report  

SciTech Connect (OSTI)

Research performed under this contract was divided into four tasks under the following headings: Task 1, Characterization of fly ash; Task 2, Measurements of the optical constants of slags; Task 3, Calculations of the radiant properties of fly ash dispersions; and Task 4, Measurements of the radiant properties of fly ash dispersions. Tasks 1 and 4 constituted the Ph.D. research topic of Sarbajit Ghosal, while Tasks 2 and 3 constituted the Ph.D. research topic of Jon Ebert. Together their doctoral dissertations give a complete account of the work performed. This final report, issued in two volumes consists of an executive summary of the whole program followed by the dissertation of Ghosal and Ebert. Volume 2 contains the dissertation of Ebert which covers the measurements of the optical constants of slags, and calculations of the radiant properties of fly ash dispersions. A list of publications and conference presentations resulting from the work is also included.

Self, S.A.

1994-12-01T23:59:59.000Z

326

Guide to Using Wood Ash as an Agricultural Soil Amendment  

E-Print Network [OSTI]

wastes Increases soil pH Add plant nutrients Low cost #12;UNH COOPERATIVE EXTENSION Food & Agriculture and scab-susceptible potatoes varieties thrive in acid soils, and should not be supplemented with wood ash

New Hampshire, University of

327

Delayed ettringite formation (DEF) in mortars of white cement  

Science Journals Connector (OSTI)

In this study white cement CEM I-52.5 and white limestone cement CEM II-LL, A and B, with 15% and 25% limestone substitution, were studied. The way delayed ettringite forms, due to exposure to high temperatures (50 °C) and external sulphate attacks, was examined in the mortar samples. The mortars were immersed at 50 °C for 180 days in: (a) a saturated Ca(OH)2 solution and (b) a 5% Na2SO4 solution. During the experiment’s duration, the mortar samples were being observed visually on a regular basis while their expansion was estimated on a weekly basis by measuring the change of length with a micrometer. At the end of the experiment, the mortar samples’ compressive strength was determined and the deterioration products were identified through means of X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM-EDAX), Thermogravimetry (TG) and Infra-Red Spectroscopy (FT-IR). Concluding it is evident that the amount of ettringite is proportional to the C3A content of cement. Sulphates amount in cement is the controlling factor for heat induced ettringite formation since when they are consumed the reaction stops. On the other hand in the case of external sulphate attack another important controlling factor is the compressive strength of the cement; the higher compressive strength the lower the risk of expansion. Finally, in the case of external sulphate attack, limestone, when added to cement, was proved to enhance the durability against sulphates attack when compared to a cement of the same class.

M. Katsioti; N. Patsikas; P. Pipilikaki; N. Katsiotis; K. Mikedi; M. Chaniotakis

2011-01-01T23:59:59.000Z

328

Effects of Sediment Containing Coal Ash from the Kingston Ash Release on Embryo-Larval Development in the Fathead Minnow, Pimephales promelas (Rafinesque, 1820)  

Science Journals Connector (OSTI)

The largest environmental release of coal ash in US history occurred in December 2008 ... Plant in East Tennessee. A byproduct of coal-burning power plants, coal ash is enriched in metals and metalloids such ... ...

Mark S. Greeley Jr.; Logan R. Elmore…

2014-02-01T23:59:59.000Z

329

Enhancement of phosphogypsum with high lime fly ash  

E-Print Network [OSTI]

ENHANCEMENT OF PHOSPHOGYPSUM WITH HIGH LIME FLY ASH A Thesis by CHUCK ALAN GREGORY Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1983 Major... Subject: Civil Engineering ENHANCEMENT OF PHOSPHOGYPSUM WITH HIGH'LIME FLY ASH A Thesis by CHUCK ALAN GREGORY Approved as to style and content by: Dr. ona d Saylak (Chairman f Committee) Dr. W. edbetter ( ember) (Member) r. Lloyd Deuel, 3...

Gregory, Chuck Alan

1983-01-01T23:59:59.000Z

330

Use of Biomass Gasification Fly Ash in Lightweight Plasterboard  

Science Journals Connector (OSTI)

In addition, the overall environmental benefit of waste gasification plus ash utilization of a difficult fly ash makes the overall process attractive. ... Only the Autonomous Government of Catalonia has established regional regulations for waste management, including limited recycling for some wastes considered as byproducts. ... viability of gasifying untreated olive stone, also called "orujillo", a byproduct of the olive oil industry that comprises both olive stone and pulp. ...

C. Leiva; A. Gómez-Barea; L. F. Vilches; P. Ollero; J. Vale; C. Fernández-Pereira

2006-11-24T23:59:59.000Z

331

Expansion-contraction cycles for cement optimized as a function of additives  

SciTech Connect (OSTI)

An experimental study was carried out to investigate the addition of specific additives to cement in order to eliminate the micro-fractures and micro-annuli that cause gas migration. The experiments performed monitored the change in the cement slurry pressure during the setting of the cement. During the setting period of the cement, two time cycles of cement expansion and contraction were observed. This is due to the individual contributions of each part of the cement mixture. To obtain the optimum tightness of the cement, final optimum concentrations of the additives were obtained experimentally, where the cyclic pressure behavior of the cement was optimized for the best final cement results. By utilizing the correct amount of Anchorage Clay, XC-Polymer, Ironite Scavenger, Ultrafine cement and Synthetic Rubber powder in a class G mixture at a given temperature and confining pressure, an impermeable cement mixture can be obtained. The correct amount of Synthetic Rubber used for cyclic pressure reduction is a function of cement setting temperature and pressure as well as the elastic properties of the rubber. By using laboratory testing at different pressure and temperature with different rubber concentrations and elastic properties, it is estimated that the entire annulus can have an impermeable cement from surface to total depth. The difference in temperature and pressure with depth dictates the concentration and elastic properties of the rubber as the required expansion and contraction changes with depth.

Talabani, S.; Hareland, G. [New Mexico Inst. of Mining and Technology, Socorro, NM (United States)

1995-12-31T23:59:59.000Z

332

STRATEGIES AND TECHNOLOGY FOR MANAGING HIGH-CARBON ASH  

SciTech Connect (OSTI)

The overall objective of the present project is to identify and assess strategies and solutions for the management of industry problems related to carbon in ash. Specific research issues to be addressed include: the effect of parent fuel selection on ash properties and adsorptivity, including a first ever examination of the air entrainment behavior of ashes from alternative (non-coal) fuels; the effect of various low-NOx firing modes on ash properties and adsorptivity; and the kinetics and mechanism of ash ozonation. This data will provide scientific and engineering support of the ongoing process development activities. This first project period, experiments were carried out to better understand the fundamental nature of the ozonation effect on ash. Carbon surfaces were characterized by surfactant adsorption, and by X-ray Photoelectron Spectroscopy before and after oxidation, both by air at 440 C and by ozone at room temperature. The results strongly suggest that the beneficial effect of ozonation is in large part due to chemical modification of the carbon surfaces.

Robert Hurt; Eric Suuberg; John Veranth

2001-12-26T23:59:59.000Z

333

Ash level meter for a fixed-bed coal gasifier  

DOE Patents [OSTI]

An ash level meter for a fixed-bed coal gasifier is provided which utilizes the known ash level temperature profile to monitor the ash bed level. A bed stirrer which travels up and down through the extent of the bed ash level is modified by installing thermocouples to measure the bed temperature as the stirrer travels through the stirring cycle. The temperature measurement signals are transmitted to an electronic signal process system by an FM/FM telemetry system. The processing system uses the temperature signals together with an analog stirrer position signal, taken from a position transducer disposed to measure the stirrer position to compute the vertical location of the ash zone upper boundary. The circuit determines the fraction of each total stirrer cycle time the stirrer-derived bed temperature is below a selected set point, multiplies this fraction by the average stirrer signal level, multiplies this result by an appropriate constant and adds another constant such that a 1 to 5 volt signal from the processor corresponds to a 0 to 30 inch span of the ash upper boundary level. Three individual counters in the processor store clock counts that are representative of: (1) the time the stirrer temperature is below the set point (500.degree. F.), (2) the time duration of the corresponding stirrer travel cycle, and (3) the corresponding average stirrer vertical position. The inputs to all three counters are disconnected during any period that the stirrer is stopped, eliminating corruption of the measurement by stirrer stoppage.

Fasching, George E. (Morgantown, WV)

1984-01-01T23:59:59.000Z

334

STRATEGIES AND TECHNOLOGY FOR MANAGING HIGH-CARBON ASH  

SciTech Connect (OSTI)

The overall objective of the present project was to identify and assess strategies and solutions for the management of industry problems related to carbon in ash. Specific issues addressed included: (1) the effect of parent fuel selection on ash properties and adsorptivity, including a first ever examination of the air entrainment behavior of ashes from alternative (non-coal) fuels; (2) the effect of various low-NOx firing modes on ash properties and adsorptivity based on pilot-plant studies; and (3) the kinetics and mechanism of ash ozonation. This laboratory data has provided scientific and engineering support and underpinning for parallel process development activities. The development work on the ash ozonation process has now transitioned into a scale-up and commercialization project involving a multi-industry team and scheduled to begin in 2004. This report describes and documents the laboratory and pilot-scale work in the above three areas done at Brown University and the University of Utah during this three-year project.

Robert Hurt; Eric Suuberg; John Veranth; Xu Chen; Indrek Kulaots

2004-02-13T23:59:59.000Z

335

A Review of Emerging Energy-efficiency and CO2 Emission-reduction Technologies for Cement and Concrete Production  

E-Print Network [OSTI]

and Resource Saving Technologies in Cement Industry.1:87–94. Blue World Crete. 2012. Technology. Available atOakey. 2009. CO 2 Capture Technologies for Cement Industry.

Hasanbeigi, Ali

2014-01-01T23:59:59.000Z

336

Characteristics of hemp fabric reinforced nanoclay–cement nanocomposites  

Science Journals Connector (OSTI)

Abstract Cement eco-nanocomposites reinforced with hemp fabric (HF) and nanoclay platelets (Cloisite 30B) are fabricated and investigated in terms of X-ray diffraction, scanning electron microscopy, physical and mechanical properties. Results indicated that the mechanical properties generally increased as a result of the addition of nanoclay into the cement matrix with HF. An optimum replacement of ordinary Portland cement with 1 wt% nanoclay decreased the porosity and also significantly increased the density, flexural strength and fracture toughness of HF-reinforced nanocomposite. The microstructural results indicate that the nanoclay behaves not only as a filler to improve the microstructure, but also as an activator to promote the pozzolanic reaction and thus improved the adhesion with hemp fabric. The failure micromechanisms and energy dissipative processes in HF-reinforced cement composite and HF-reinforced nanocomposite are discussed in terms of microstructural observations. These cement eco-nanocomposites can provide new insights for the development of new ‘environmental-friendly nanomaterials’ for building applications such as the construction of sandwich panels, ceilings and roofs.

A. Hakamy; F.U.A. Shaikh; I.M. Low

2014-01-01T23:59:59.000Z

337

Coal Ash Corrosion Resistant Materials Testing  

SciTech Connect (OSTI)

In April 1999, three identical superheater test sections were installed into the Niles Unit No.1 for the purpose of testing and ranking the coal ash corrosion resistance of candidate superheater alloys. The Niles boiler burns high sulfur coal (3% to 3.5%) that has a moderate alkali content (0.2% sodium equivalents), thus the constituents necessary for coal ash corrosion are present in the ash. The test sections were controlled to operate with an average surface metal temperature from approximately 1060 F to 1210 F which was within the temperature range over which coal ash corrosion occurs. Thus, this combination of aggressive environment and high temperature was appropriate for testing the performance of candidate corrosion-resistant tube materials. Analyses of the deposit and scale confirmed that aggressive alkali sulfate constituents were present at the metal surface and active in tube metal wastage. The test sections were constructed so that the response of twelve different candidate tube and/or coating materials could be studied. The plan was to remove and evaluate one of the three test sections at time intervals of 1 year, 3 years, and 5 years. This would permit an assessment of performance of the candidate materials as a function of time. Test Section A was removed in November 2001 after about 24 months of service at the desired steam temperature set point, with about 15.5 months of exposure at full temperature. A progress report, issued in October 2002, was written to document the performance of the candidate alloys in that test section. The evaluation described the condition of each tube sample after exposure. It involved a determination of the rate of wall thickness loss for these samples. In cases where there was more than one sample of a candidate material in the test section, an assessment was made of the performance of the alloy as a function of temperature. Test Sections B and C were examined during the November 2001 outage, and it was decided that, due to excessive wastage, certain tube samples needed to be removed and replaced in order to ensure that Test Sections B and C would have a chance of remaining in the boiler for their intended exposure period. These suspect tube samples were replaced and the two remaining test sections were put back into service. The tube samples that were removed from Test Sections B and C were set aside for later analysis at the end of the planned exposure period. Test Sections B and C were again examined approximately six months later. At that time, measured wall thickness losses raised concerns about additional tube samples. These suspect samples were also removed, set aside for later analysis, and replaced. The test sections then went back into service until the end of the second exposure period, which was concluded in May 2003 when, due to evidence of excessive wastage, the valves were opened increasing cooling steam flow and thereby effectively stopping corrosion. In August 2003, Test Sections B and C were removed for closer examination. Section C had experienced about 42 months of service at the desired team temperature set point with 28.5 months at temperature at full temperature. Additional suspect samples were removed from Test Section B, then, it was re-installed into the boiler (at the location originally occupied by Section C), where it remained in service until the end of the program. Due to this removal history, the samples from Test Section B had a total service duration that varied from a minimum of 15.5 months (for samples that performed poorly) to 37 months for samples the survived for the full intended service exposure for Section B. The figure below shows a schematic of Test Section B and indicates the length of service exposure for different locations. This report provides the results of the evaluation of Test Section B, including the samples that remained in the Test Section for the full exposure period as well as those that were removed early. This report also is intended to compare and summarize the results for all three test sections. The analysis of T

D. K. McDonald; P. L. Daniel; D. J. DeVault

2007-12-31T23:59:59.000Z

338

Energy conservation potential of Portland cement particle size distribution control, Phase 2  

SciTech Connect (OSTI)

The main objectives of Phase 2 are to determine the feasibility of using cements with controlled particle size distributions (CPSD cements) in practical concrete applications, and to refine our estimates of the potential energy savings that may ensue from such use. The work in Phase 2 is divided into two main tasks, some parts of which will be carried out simultaneously: Task 1 will continue cement paste studies to optimize cement performance similar to those of Phase 1, but with particular emphasis on gypsum requirements, blended cements, and water-reducing admixtures. This task will also include preparation of sufficient CPSD cements for use in all Phase 2 work. Task 2 will be a comprehensive examination of the properties of concretes made with CPSD cements. This will include optimization of concrete mix designs to obtain the best possible performance for practical applications of both portland and blended cements. The effects of chemical admixtures and curing temperature variations will also be determined.

Helmuth, R.A; Whiting, D.A.

1983-01-01T23:59:59.000Z

339

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

E-Print Network [OSTI]

the production costs of all waste-burning cement kilns, andthree cement plants are burning waste fuels. Beijing Cementof waste; the plant is burning solid waste from the chemical

Price, Lynn

2010-01-01T23:59:59.000Z

340

Potential Energy Savings and CO2 Emissions Reduction of China's Cement Industry  

E-Print Network [OSTI]

production instantly reaches the current world best practice energyworld best practice and implement aggressive energy efficiency and carbon reduction measures in all cement productionenergy intensity of China’s cement production would reach current world

Ke, Jing

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Effectiveness of the top-down nanotechnology in the production of ultrafine cement (~220?nm)  

Science Journals Connector (OSTI)

The present investigation is dealing with the communition of the cement particle to the ultrafine level (?220 nm) utilizing the bead milling process, which is considered as a top-down nanotechnology. During the grinding of the cement particle, ...

Byung-Wan Jo, Sumit Chakraborty, Ki Heon Kim, Yun Sung Lee

2014-01-01T23:59:59.000Z

342

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

E-Print Network [OSTI]

in 2008 is used as the fuel price in the fuel conservationprices and average fuel prices for Shandong’s cementCurve (FCSC) with average fuel price for the studied cement

Price, Lynn

2010-01-01T23:59:59.000Z

343

Monitoring the ettringite formation in cement paste using low field T2-NMR  

Science Journals Connector (OSTI)

In the present work we study the transverse relaxation time evolution of water molecules confined inside cement paste during the hydration process. The cement paste under study was manufactured with different water-to-cement ratios and using two types of cement: gray cement (CEM I 52.5 R) having a high content of magnetic impurities and white cement (CEM I 52.5 N) with lower amount of magnetic impurities. The two cement types were chosen in order to better distinguish the surface contribution to the relaxation process. On this basis a relationship between porosity evolution ettringite formation and the transverse relaxation time evolution was established. It was also observed that the increase in the water-to-cement ratio better reveals the ettringite formation.

Alexandra Pop; Codruta Badea; Ioan Ardelean

2013-01-01T23:59:59.000Z

344

Rapid setting of portland cement by greenhouse carbon dioxide capture  

SciTech Connect (OSTI)

Following the work by Berger et al. on rapid setting of calcium silicates by carbonation, a method of high-volume capture of CO{sub 2} in portland cement has been developed. Typically, 10--24 wt. % of CO{sub 2} produced by the calcination of calcium carbonate during clinkering, may be captured, and the set cement acquires most of its full strength in less than a day. The approach will have economic advantages in fabrication of precast structures, in emergency development of infrastructure during natural disasters, and in defense applications. Moreover, it will help the cement industry comply with the Clean Air Act of 1990 by sequestering the greenhouse carbon dioxide.

Wagh, A.S.; Singh, D.; Knox, L.J.

1994-04-01T23:59:59.000Z

345

Recommended guidelines for solid fuel use in cement plants  

SciTech Connect (OSTI)

Pulverized solid fuel use at cement plants in North America is universal and includes bituminous and sub-bituminous coal, petroleum coke, and any combination of these materials. Provided are guidelines for the safe use of pulverized solid fuel systems in cement plants, including discussion of the National Fire Protection Association and FM Global fire and explosion prevention standards. Addressed are fire and explosion hazards related to solid fuel use in the cement industry, fuel handling and fuel system descriptions, engineering design theory, kiln system operations, electrical equipment, instrumentation and safety interlock issues, maintenance and training, and a brief review of code issues. New technology on fire and explosion prevention including deflagration venting is also presented.

Young, G.L.; Jayaraman, H.; Tseng, H. (and others)

2007-07-01T23:59:59.000Z

346

An overview of the behaviour of biomass during combustion: Part II. Ash fusion and ash formation mechanisms of biomass types  

Science Journals Connector (OSTI)

Abstract An extended overview of the phase–mineral transformations of organic and inorganic matter during biomass combustion was conducted in Part I of the present work. The ash fusion and ash formation mechanisms of biomass types and sub-types during combustion are described in the present Part II. For that purpose the identified systematic associations based on the occurrence, content and origin of elements and phases in the biomass ash (BA) system, namely (1) Si–Al–Fe–Na–Ti (mostly glass, silicates and oxyhydroxides); (2) Ca–Mg–Mn (commonly carbonates, oxyhydroxides, glass, silicates and some phosphates and sulphates); and (3) K–P–S–Cl (normally phosphates, sulphates, chlorides, glass and some silicates and carbonates); were used as classification of \\{BAs\\} into four types (“S”, “C”, “K” and “CK”) and six sub-types with high, medium and low acid tendencies and their description was given. Then, topics related to ash fusion behaviour such as: some general considerations and observations about ash melting; ash fusion temperatures (AFTs) of biomass and their comparisons with coal; relationships between \\{AFTs\\} and inorganic composition of biomass and coal; and ash fusion mechanisms of biomass and coal are characterized. Further, issues connected with the ash formation mechanisms of BA types and sub-types are discussed. Subsequently, aspects related to potential applications of ash formation mechanisms for BA types and sub-types, namely some key technological problems (fusion, slagging and fouling predictions, low ash fusion temperatures, co-combustion and application of BA) and environmental risks (volatilization, capture and water leaching of hazardous elements) are described. Finally, it is emphasized that the application of this new classification approach based on combined phase–mineral and chemical composition of biomass and BA has not only fundamental importance, but also has potential applications in prediction of behaviour and properties connected with the innovative and sustainable utilization of biomass and BA. It is also demonstrated that the definitive utilization, technological and environmental advantages and challenges related to biomass and BA associate preferentially with their specific types and sub-types and they could be predictable to some extent by using the above or similar combined chemical and phase–mineral classification approaches.

Stanislav V. Vassilev; David Baxter; Christina G. Vassileva

2014-01-01T23:59:59.000Z

347

Cement Plant EPI | ENERGY STAR Buildings & Plants  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Cement Plant EPI Cement Plant EPI Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories Target Finder Technical documentation

348

Sulfur dioxide oxidation and plume formation at cement kilns  

SciTech Connect (OSTI)

Results of source sampling at the Glens Falls cement kiln in Glens Falls, N.Y., are reported for sulfur oxides, ammonia, hydrochloric acid, oxygen, and moisture content. The origin of a detached, high-opacity, persistent plume originating from the cement kiln stack is investigated. It is proposed that this plume is due to ammonium salts of SOx and sulfuric acid that have been formed in condensed water droplets in the plume by the pseudocatalytic action of ammonia. (1 diagram, 1 graph, 22 references, 7 tables)

Dellinger, B.; Grotecloss, G.; Fortune, C.R.; Cheney, J.L.; Homolya, J.B.

1980-10-01T23:59:59.000Z

349

Prediction of Chinese Coal Ash Fusion Temperatures in Ar and H2 Atmospheres  

Science Journals Connector (OSTI)

Analysis of coal ashes on a weight percent basis shows that they consist mainly of SiO2, Al2O3, Fe2O3, CaO, and MgO, so that the properties of coal ashes at high temperature might be modeled by a five system SiO2?Al2O3?Fe2O3?CaO?MgO synthetic ash. ... The peaks from lab. ashes and corresponding combustion ashes derived from the same coals show clear differences which may be related to the evapn. of potassium during combustion and the reactions of the mineral residues to form combustion ash. ...

Wen J. Song; Li H. Tang; Xue D. Zhu; Yong Q. Wu; Zi B. Zhu; Shuntarou Koyama

2009-03-03T23:59:59.000Z

350

Role of Fly Ash in the Removal of Organic Pollutants from Wastewater  

Science Journals Connector (OSTI)

In India the problem is further compounded by the use of wet fly ash collection systems by a large number of power plants, which results in degradation of the pozzolanic characteristics of ash, an essential ingredient for several ash-based products. ... To accommodate the many new subbituminous fly ashes, the American Society for Testing and Materials (ASTM) established two classes of fly ash, Class F from bituminous coal and Class C from subbituminous and lignite coal. ... Thermal power plant waste material (bottom ash) was utilized as a potential adsorbent for the textile dye malachite green. ...

M. Ahmaruzzaman

2009-02-27T23:59:59.000Z

351

Study on the Volatility of Cesium in Dry Ashing Pretreatment and Dissolution of Ash by Microwave Digestion System - 13331  

SciTech Connect (OSTI)

Based on the regulation of the activity concentration of Cs-137, Co-58, Co-60, Fe-55, Ni-59, Ni-63, Sr-90, Nb-94, and Tc-99, and the total alpha from the radioactive waste acceptance criteria, the measurement of the activity concentration of these nuclides in low and intermediate levels of radioactive waste such as in paper, cotton, vinyl and plastic samples was investigated. A dry ashing method was applied to obtain a concentration effect of the samples. Owing to the temperature dependence of the volatility for cesium, the temperature of 300 to 650 deg. C was examined. It was found that 450 deg. C is the optimum dry ashing temperature. After dry ashing, the produced ash was dissolved with HNO{sub 3}, HCl, and HF by a high-performance microwave digestion system. The ash sample, for the most part, was completely dissolved with 10 mL of HNO{sub 3}, 4 mL of HCl, and 0.25 mL of HF by a high-performance microwave digestion system using a nova high temperature rotor at 250 deg. C for 90 min until reaching 0.2 g. To confirm the reliability of cesium loss after the performance of the dry ashing procedure, a cesium standard solution for AAS and a Cs-137 standard solution for gamma spectrometry were added to a paper towel or a planchet of stainless steel, respectively. Cesium was measured by AAS, ICP-MS, and gamma spectrometry. The volatility of cesium did not occur until 450 deg. C ashing. (authors)

Choi, Kwang-Soon; Lee, Chang Heon; Ahn, Hong-Joo; Park, Yong Joon; Song, Kyuseok [Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute, Daedeok-daero 989-111, Yuseong-gu, Daejeon, 305-353 (Korea, Republic of)] [Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute, Daedeok-daero 989-111, Yuseong-gu, Daejeon, 305-353 (Korea, Republic of)

2013-07-01T23:59:59.000Z

352

2003 Conference on Unburned Carbon on Utility Fly Ash  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2003 Conference on Unburned Carbon on Utility Fly Ash 2003 Conference on Unburned Carbon on Utility Fly Ash October 28, 2003 Table of Contents Disclaimer Participants List [PDF-31KB] Papers and Presentations Control Measures Predictive Performance Tools (Including Instrumentation) Processing and Utilization of High-LOI Fly Ash Beneficiation of High-LOI Fly Ash Characterization of High-LOI Fly Ash Poster Presentations Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government or any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

353

Prediction of ash deposition in pulverized coal combustion systems  

SciTech Connect (OSTI)

A predictive scheme based on CCSEM flyash data and Computational Fluid Dynamics (CFD) has been developed to study the slagging propensity of coals. The model has been applied to predict the deposition potential of three UK coals; Bentinck, Daw Mill and Silverdale, in a pilot scale single burner ash deposition test facility and an utility size multi-burner front wall-fired furnace. The project is part of a collaborative research program sponsored by the UK Department of Trade and Industry and involved various industrial organizations and universities. The objective of the project is to understand the fundamental aspects of slagging in pulverized coal-fired combustion systems. This paper is a sequel to the poster paper entitled: The Prediction of Ash Deposition in a Coal Fired Axi-symmetric Furnace, presented in the last Engineering Foundation Conference. The present model predicts the relative slagging propensity of the three coals correctly. The predicted deposition patterns are also consistent with the observations. The results from the model indicate a preferential deposition of iron during the initial stage of ash deposition. The average compositions of the deposits become closer to that of the bulk ash when the accumulation of ash deposits is taken into account.

Lee, F.C.C.; Riley, G.S. [National Power PLC, Swindon (United Kingdom); Lockwood, F.C. [Imperial Coll. of Science, Technology and Medicine, London (United Kingdom). Dept. of Mechanical Engineering

1996-12-31T23:59:59.000Z

354

Release of Ammonium and Mercury from NOx Controlled Fly Ash  

SciTech Connect (OSTI)

One of the goals of the Department of Energy is to increase the reuse of coal utilization byproducts (CUB) to 50% by 2010. This will require both developing new markets and maintaining traditional ones such as the use of fly ash in concrete. However, the addition of pollution control devices can introduce side-effects that affect the marketability of the CUB. Such can be the case when NOx control is achieved using selective catalytic or non-catalytic reduction (SCR or SNCR). Depending on site-specific details, the ammonia slip can cause elevated levels of NH3 in the fly ash. Disposal of ammoniated fly ash can present environmental concerns related to the amount of ammonia that might be released, the amount of water that might become contaminated, and the extent to which metals might be mobilized by the presence of the ammonia. Ammonia retained in fly ash appears to be present as either an ammonium salt or as a chemisorbed species. Mercury in the leachates correlated to neither the amount of leachable ammonium nor to the total amount of Hg in the ash. The strongest correlation was between the decreases in the amount of Hg leached with increased LOI.

Schroeder, K.T.; Cardone, C.R.; Kim, A.G

2007-07-01T23:59:59.000Z

355

ADVANCED POWER SYSTEMS ASH BEHAVIOR IN POWER SYSTEMS  

SciTech Connect (OSTI)

The overall goal of this initiative is to develop fundamental knowledge of ash behavior in power systems for the purpose of increasing power production efficiency, reducing operation and maintenance costs, and reducing greenhouse gas emissions into the atmosphere. The specific objectives of this initiative focus primarily on ash behavior related to advanced power systems and include the following: ? Determine the current status of the fundamental ash interactions and deposition formation mechanisms as already reported through previous or ongoing projects at the EERC or in the literature. ? Determine sintering mechanisms for temperatures and particle compositions that are less well known and remain for the most part undetermined. ? Identify the relationship between the temperature of critical viscosity (Tcv ) as measured in a viscometer and the crystallization occurring in the melt. ? Perform a literature search on the use of heated-stage microscopy (HSM) for examining in situ ash-sintering phenomena and then validate the use of HSM in the determination of viscosity in spherical ash particles. ? Ascertain the formation and stability of specific mineral or amorphous phases in deposits typical of advanced power systems. ? Evaluate corrosion for alloys being used in supercritical combustion systems.

CHRISTOPHER J. ZYGARLICKE; DONALD P. MCCOLLOR; JOHN P. KAY; MICHAEL L. SWANSON

1998-09-01T23:59:59.000Z

356

ENVIRONMENTAL EVALUATION FOR UTILIZATION OF ASH IN SOIL STABILIZATION  

SciTech Connect (OSTI)

The Minnesota Pollution Control Agency (MPCA) approved the use of coal ash in soil stabilization, indicating that environmental data needed to be generated. The overall project goal is to evaluate the potential for release of constituents into the environment from ash used in soil stabilization projects. Supporting objectives are: (1) To ensure sample integrity through implementation of a sample collection, preservation, and storage protocol to avoid analyte concentration or loss. (2) To evaluate the potential of each component (ash, soil, water) of the stabilized soil to contribute to environmental release of analytes of interest. (3) To use laboratory leaching methods to evaluate the potential for release of constituents to the environment. (4) To facilitate collection of and to evaluate samples from a field runoff demonstration effort. The results of this study indicated limited mobility of the coal combustion fly ash constituents in laboratory tests and the field runoff samples. The results presented support previous work showing little to negligible impact on water quality. This and past work indicates that soil stabilization is an environmentally beneficial CCB utilization application as encouraged by the U.S. Environmental Protection Agency. This project addressed the regulatory-driven environmental aspect of fly ash use for soil stabilization, but the demonstrated engineering performance and economic advantages also indicate that the use of CCBs in soil stabilization can and should become an accepted engineering option.

David J. Hassett; Loreal V. Heebink

2001-08-01T23:59:59.000Z

357

Influence of Coal Ash/Organic Waste Application on Distribution of Trace Metals in Soil, Plant, and Water  

Science Journals Connector (OSTI)

This study was conducted to evaluate effects of coal ash mixture (coal ash, biosolids and yard waste compost ratio of ... fruits, and its leaching potential into groundwater. Coal ash mixture was applied at rates...

Yuncong Li; Min Zhang; Peter Stoffella; Zhenli He…

2003-01-01T23:59:59.000Z

358

Ash bed level control system for a fixed-bed coal gasifier  

DOE Patents [OSTI]

An ash level control system is provided which incorporates an ash level meter to automatically control the ash bed level of a coal gasifier at a selected level. The ash level signal from the ash level meter is updated during each cycle that a bed stirrer travels up and down through the extent of the ash bed level. The ash level signal is derived from temperature measurements made by thermocouples carried by the stirrer as it passes through the ash bed and into the fire zone immediately above the ash bed. The level signal is compared with selected threshold level signal to determine if the ash level is above or below the selected level once each stirrer cycle. A first counter is either incremented or decremented accordingly. The registered count of the first counter is preset in a down counter once each cycle and the preset count is counted down at a selected clock rate. A grate drive is activated to rotate a grate assembly supporting the ash bed for a period equal to the count down period to maintain the selected ash bed level. In order to avoid grate binding, the controller provides a short base operating duration time each stirrer cycle. If the ash bed level drops below a selected low level or exceeds a selected high level, means are provided to notify the operator.

Fasching, George E. (Morgantown, WV); Rotunda, John R. (Fairmont, WV)

1984-01-01T23:59:59.000Z

359

Long-term monitoring of microleakage of dental cements by radiochemical diffusion  

SciTech Connect (OSTI)

Radioactive /sup 14/C sucrose was found to be an ideal marker for microleakage because it did not penetrate tooth tissue, dental cement, or mounting resin. The main finding is that the adhesive cements--the glass-ionomer and polycarboxylate--are significantly more effective at preventing microleakage than are the traditional phosphate cements--silicate and zinc phosphate. The differences can be as high as two orders of magnitude. The adhesive cements provide almost perfect and reliable seals. By contrast, the nonadhesive cements are erratic sealants with most of the restorations leaking.

Powis, D.R.; Prosser, H.J.; Wilson, A.D.

1988-06-01T23:59:59.000Z

360

The abundance of AsH3 in Jupiter  

SciTech Connect (OSTI)

Both ground-based and airborne observations of the AsH3 Q-branch at 2126/cm, in conjunction with newly-analyzed laboratory comparison spectra at AsH3, are employed in the derivation of a new estimate of Jovian As abundance. The mole fraction on AsH3 in the Jovian atmosphere is 0.22 + or - 0.11 ppb; this is merely 0.5 times the solar abundance, and a factor-of-9 less than the mole fraction found in Saturn, duplicating the pattern noted in the relative abundance of P in these two planets and furnishing a useful constraint for models of heavy element incorporation in the outer planets' gaseous envelopes. 20 refs.

Noll, K.S.; Larson, H.P.; Geballe, T.R. (Arizona Univ., Tucson (USA) Joint Astronomy Centre, Hilo, HI (USA))

1990-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

COMPOSITE PORTLAND CEMENT CONCRETE PAVEMENTS (Tollway) Effective: January 30, 2012  

E-Print Network [OSTI]

COMPOSITE PORTLAND CEMENT CONCRETE PAVEMENTS (Tollway) Effective: January 30, 2012 Revised: May 8 for special applications to composite pavements as shown and described on the Drawings and in this Special as required; 5. Constructing the composite pavement on a prepared subgrade, or subbase, without forms. 6

362

Leaching induced concentration profiles in the solid phase of cement  

SciTech Connect (OSTI)

Analysis of the solid phase of portland cement specimens by energy dispersive x-ray spectrometry before and after leaching provided elemental profiles within the cement. Releases of potassium were calculated from the solid phase profiles and were compared to releases determined from leachate analyses of potassium and cesium-137. The fraction of potassium released in the leachate was found to correlate closely to that of cesium-137 under varying time and temperature conditions, despite the different manner in which each was originally contained in the cement. Agreement was obtained among potassium releases as determined from the solid, potassium in the leachate and cesium-137 in the leachate. These correlations allowed the use of potassium as an analog for cesium-137 in cement. Profiles of potassium in the solid showed varying degrees of depletion. A specimen, sectioned immediately after leaching for 471 days, showed complete removal of potassium to 9 mm depth from the specimens surface. From 9 mm to the center of the specimen, an apparently linear increase in concentration was observed. Specimens that had been air dried prior to sectioning had profiles that were produced by evaporative transport of dissolved species toward the surface. Carbonation of the surface appears to have retarded migration of the dissolved material. This prevented it from reaching the outer edge and resulted in increased potassium concentrations several mm inside the surface. 9 refs., 10 figs., 2 tabs.

Fuhrmann, M.; Colombo, P.

1987-04-01T23:59:59.000Z

363

India's cement industry: Productivity, energy efficiency and carbon emissions  

SciTech Connect (OSTI)

Historical estimates of productivity growth in India's cement sector vary from indicating an improvement to a decline in the sector's productivity. The variance may be traced to the time period of study, source of data for analysis, and type of indices and econometric specifications used for reporting productivity growth. Analysis shows that in the twenty year period, 1973 to 1993, productivity in the aluminum sector increased by 0.8% per annum. An econometric analysis reveals that technical progress in India's cement sector has been biased towards the use of energy and capital, while it has been material and labor saving. The increase in productivity was mainly driven by a period of progress between 1983 and 1991 following partial decontrol of the cement sector in 1982. The authors examine the current changes in structure and energy efficiency in the sector. Their analysis shows that the Indian cement sector is moving towards world-best technology, which will result in fewer carbon emissions and more efficient energy use. However, substantial further energy savings and carbon reduction potentials still exist.

Schumacher, Katja; Sathaye, Jayant

1999-07-01T23:59:59.000Z

364

Automated Assessment of Polyethylene Wear in Cemented Acetabular Components using  

E-Print Network [OSTI]

Automated Assessment of Polyethylene Wear in Cemented Acetabular Components using Anteroposterior, Ninewells Hospital, Dundee, DD1 9SY, UK Abstract Polyethylene wear in the acetabular components of hip to the polyethylene acetabular component of a prosthesis so that both it and the metal femoral head component can

St Andrews, University of

365

Study of composite cement containing burned oil shale  

E-Print Network [OSTI]

Study of composite cement containing burned oil shale Julien Ston Supervisors : Prof. Karen properties. SCMs can be by-products from various industries or of natural origin, such as shale. Oil shale correctly, give a material with some cementitious properties known as burned oil shale (BOS). This study

Dalang, Robert C.

366

Diagenesis in halite-cemented source rocks, Middle Devonian, Saskatchewan  

SciTech Connect (OSTI)

Porosity in Dawson Bay carbonates is halite plugged and the formation is sandwiched between thick units of bedded halite. The presence of displacive halite crystals within fine-grained carbonates (implying sediment plasticity during halite emplacement) and uncompacted organic-rich, carbonate-poor stromatolites indicate halite cementation occurred at an early stage. Also, halite cementation must have been completed prior to porosity loss in overlying bedded halites. By comparison with Holocene/Pleistocene bedded halites, this cementation occurred with only tens of meters of overburden. Early complete halite cementation should have converted Dawson Bay carbonates into virtually a closed system and greatly curtailed or inhibited organic-matter maturation within them Organic-rich carbonates occur immediately below Dawson Bay evaporites as rocks containing an anomalously abundant benthos (stromatoporoids, brachiopods) or as a more restricted facies, lacking megafossils or containing gastropods. Some restricted carbonates contain more than 2% extractable organic carbon. The n-alkane, pentacyclic triterpane, nonrearranged sterane and disterane distributions suggest two distinct populations of samples are present. Biomarker distributions are difficult to interpret in terms of estimating organic maturity because of source rock environmental factors (hypersalinity), but appear to be inconsistent with the geological prognosis that these source rocks would have been isolated early in their diagenesis. The problem of how kerogens can be altered in an apparently closed system has yet to be resolved.

Kendall, A.C. (Univ. of East Anglia, Norwich (England)); Abbott, G.D.; D'Elia, V.A.A. (Univ. of Newcastle upon Tyne (England))

1990-05-01T23:59:59.000Z

367

Development of Bulk Nanocrystalline Cemented Tungsten Carbide for Industrial Applicaitons  

SciTech Connect (OSTI)

This report contains detailed information of the research program entitled "Development of Bulk Nanocrystalline Cemented Tungsten Carbide Materials for Industrial Applications". The report include the processes that were developed for producing nanosized WC/Co composite powders, and an ultrahigh pressure rapid hot consolidation process for sintering of nanosized powders. The mechanical properties of consolidated materials using the nanosized powders are also reported.

Z. Zak Fang, H. Y. Sohn

2009-03-10T23:59:59.000Z

368

Westinghouse Cementation Facility of Solid Waste Treatment System - 13503  

SciTech Connect (OSTI)

During NPP operation, several waste streams are generated, caused by different technical and physical processes. Besides others, liquid waste represents one of the major types of waste. Depending on national regulation for storage and disposal of radioactive waste, solidification can be one specific requirement. To accommodate the global request for waste treatment systems Westinghouse developed several specific treatment processes for the different types of waste. In the period of 2006 to 2008 Westinghouse awarded several contracts for the design and delivery of waste treatment systems related to the latest CPR-1000 nuclear power plants. One of these contracts contains the delivery of four Cementation Facilities for waste treatment, s.c. 'Follow on Cementations' dedicated to three locations, HongYanHe, NingDe and YangJiang, of new CPR-1000 nuclear power stations in the People's Republic of China. Previously, Westinghouse delivered a similar cementation facility to the CPR-1000 plant LingAo II, in Daya Bay, PR China. This plant already passed the hot functioning tests successfully in June 2012 and is now ready and released for regular operation. The 'Follow on plants' are designed to package three 'typical' kind of radioactive waste: evaporator concentrates, spent resins and filter cartridges. The purpose of this paper is to provide an overview on the Westinghouse experience to design and execution of cementation facilities. (authors)

Jacobs, Torsten; Aign, Joerg [Westinghouse Electric Germany GmbH, Global Waste Management, Tarpenring 6, D- 22419 Hamburg (Germany)] [Westinghouse Electric Germany GmbH, Global Waste Management, Tarpenring 6, D- 22419 Hamburg (Germany)

2013-07-01T23:59:59.000Z

369

Extension and replacement of aspalt cement with sulphur  

E-Print Network [OSTI]

deformation were performed on selected combinations of aggregate, asphalt and sulphur. Three different methods of incorpora- ting the mixture ingredients were studied. Based upon results of the screening and characterization tests, relationships between... Selection of Analysis Methods . Selection of Materials Characterization Tests CHAPTER IV. TASK B: DEVELOPMENT OF SULPHUR EXTENDED ASPHALT SYSTEMS Selection of Mixture Composition and Experimental Design Variables . Sulphur Selection Asphalt Cement...

Pickett, Daniel Ernest

2012-06-07T23:59:59.000Z

370

SYNCHROTRON X-RAY MICROTOMOGRAPHY, ELECTRON PROBE MICROANALYSIS, AND NMR OF TOLUENE WASTE IN CEMENT.  

SciTech Connect (OSTI)

Synchrotron X-ray microtomography shows vesicular structures for toluene/cement mixtures, prepared with 1.22 to 3.58 wt% toluene. Three-dimensional imaging of the cured samples shows spherical vesicles, with diameters ranging from 20 to 250 {micro}m; a search with EPMA for vesicles in the range of 1-20 {micro}m proved negative. However, the total vesicle volume, as computed from the microtomography images, accounts for less than 10% of initial toluene. Since the cements were cured in sealed bottles, the larger portion of toluene must be dispersed within the cement matrix. Evidence for toluene in the cement matrix comes from {sup 29}Si MAS NMR spectroscopy, which shows a reduction in chain silicates with added toluene. Also, {sup 2}H NMR of d{sub 8}-toluene/cement samples shows high mobility for all, toluene and thus no toluene/cement binding. A model that accounts for all observations follows: For loadings below about 3 wt%, most toluene is dispersed in the cement matrix, with a small fraction of the initial toluene phase separating from the cement paste and forming vesicular structures that are preserved in the cured cement. Furthermore, at loadings above 3 wt%, the abundance of vesicles formed during toluene/cement paste mixing leads to macroscopic phase separation (most toluene floats to the surface of the cement paste).

BUTLER,L.G.

1999-07-22T23:59:59.000Z

371

Analysis of Polychlorinated Dibenzofurans (PCDFs) in Fly Ash from a Waste Incineration Plant  

Science Journals Connector (OSTI)

......Article | 0 Benzofurans 0 Coal Ash 0 Particulate Matter...purification Carbon chemistry Coal Ash Gas Chromatography-Mass...Education,Departmentof Chemistry,42099 Konya,Turkey...obtained from various combustion processes.The combustionprocess......

Mustafa Pehlivan; Erol Pehlivan; Hüseyin Kara

1994-01-01T23:59:59.000Z

372

Effect of the Additives on the Desulphurization Rate of Flash Hydrated and Agglomerated CFB Fly Ash  

Science Journals Connector (OSTI)

CFB fly ash from separators was mixed with ... and water or additives was pumped into a CFB combustion chamber by a sludge pump. Because ... the temperature of flue gas was high in CFB, the fly ash was hydrated f...

D. X. Li; H. L. Li; M. Xu; J. F. Lu; Q. Liu…

2010-01-01T23:59:59.000Z

373

E-Print Network 3.0 - ash aqueous carbonation Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Purification Technology 40 (2004) 251257 Copper and zinc sorption by treated oil shale ash Summary: Jordanian oil shale ash was used as an adsorbent for the removal of...

374

SINGLE ELEMENT TEST PREDICTIONS FOR STRESS-STRAIN BEHAVIOR OF PANKI FLY-ASH  

E-Print Network [OSTI]

: Fly-ash is a waste product produced by burning of coal at thermal power plants. It is often used. Introduction Fly-ash is a fine powdery material, produced by burning of coal at thermal power plants. Fly

Prashant, Amit

375

E-Print Network 3.0 - ash silica fume Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

,and Bruce W. Ramme CBU-1996-08 REP-283 July 1996 Presented andPublished at the American Coal Ash Association... 's Twelfth International Coal Ash Use Symposium,Orlando,FL,January...

376

E-Print Network 3.0 - ash dosage du Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: ash and iron-foundry baghouse dust in the manufacturing of economical self-compacting concrete... . CONCLUSIONS: The limestone-quarry fines and Class C fly ash showed...

377

E-Print Network 3.0 - ash quality characterization Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: ash and iron-foundry baghouse dust in the manufacturing of economical self-compacting concrete... . CONCLUSIONS: The limestone-quarry fines and Class C fly ash showed...

378

Elemental characterization of coal ash and its leachates using sequential extraction techniques  

Science Journals Connector (OSTI)

Over 50 million tons of coal ash are produced annually in North America. Technological ... but have also increased contaminant concentrations in the ash of coal-fired boiler applications. The leaching of heavy .....

S. Landsberger; J. F. Cerbus; S. Larson

1995-05-01T23:59:59.000Z

379

Ash Transformations in the Real-Scale Pulverized Coal Combustion of South African and Colombian Coals  

Science Journals Connector (OSTI)

In this work, the formation of ash particles in the combustion of South African Klein Kopie coal and a Colombian coal was studied by measuring the ash particle characteristics upstream of the electrostatic precip...

Terttaliisa Lind; Esko I. Kauppinen…

1996-01-01T23:59:59.000Z

380

Tephrochronology and Stratigraphy of Eocene and Oligocene Volcanic Ashes of East and Central Texas  

E-Print Network [OSTI]

using neutron activation analysis (NAA) of bulk ash and glass shards, inductively coupled plasma mass spectrometry (ICPMS) of bulk ash, and electron microprobe analysis of both apatite phenocrysts and glass shards to characterize their geochemistry...

Heintz, Mindi

2013-12-02T23:59:59.000Z

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Leaching and standing water characteristics of bottom ash and composted manure blends  

E-Print Network [OSTI]

Coal burning electrical generating facilities produce roughly 91 million metric tons of ash byproducts annually. Typically, this ash is retained at the power plant sites, adding to the cost of managing wastes at the plants. Another waste material...

Mathis, James Gregory

2001-01-01T23:59:59.000Z

382

E-Print Network 3.0 - activated fly ash Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Engineering ; Materials Science 9 By-Products Utilization Summary: CONTAINING CLEAN-COAL ASH AND CLASS F FLY ASH By Tarun R. Naik, Rudolph N. Kraus, Rafat Siddique... of...

383

E-Print Network 3.0 - ashing dry Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Shrinkage of Non-Air Entrained HRWRA Concrete -0.05% 0.00% 0.05% 0... NS3, 33% Clean Coal Ash, 5% Class F Fly Ash Fig. 15 - ... Source: Wisconsin-Milwaukee, University of -...

384

E-Print Network 3.0 - alkaline coal ash Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Utilization Summary: Center for By-Products Utilization RECENT ADVANCES IN RECYCLING CLEAN- COAL ASH By Tarun R. Naik... ") UTILIZING CLEAN-COAL ASH 1 This project was for the...

385

E-Print Network 3.0 - ashing wet Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sciences and Ecology 4 By-Products Utilization Summary: A3, containing 20% clean coal ash and 5% wet collected Class F ash had compressive strengths... 0 Center for...

386

E-Print Network 3.0 - ash utilization symposium Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Utilization Summary: Center for By-Products Utilization RECENT ADVANCES IN RECYCLING CLEAN- COAL ASH By Tarun R. Naik... ") UTILIZING CLEAN-COAL ASH 1 This project was for the...

387

E-Print Network 3.0 - ash material analisis Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

was used in this work. An ASTM Class F fly ash... , and N3) were proportioned with clean coal fly ash containing 22% ... Source: Wisconsin-Milwaukee, University of - Department...

388

E-Print Network 3.0 - ash dispersion utilizing Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: Center for By-Products Utilization HIGH-STRENGTH HVFA CONCRETE CONTAINING CLEAN COAL ASH By Tarun R... , utilization rate of such ashes is much lower compared to a...

389

E-Print Network 3.0 - alkali-activated fly ash Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Engineering ; Materials Science 12 By-Products Utilization Summary: CONTAINING CLEAN-COAL ASH AND CLASS F FLY ASH By Tarun R. Naik, Rudolph N. Kraus, Rafat Siddique... of...

390

E-Print Network 3.0 - ashes total contents Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

fly ash content for normal concrete... contained fly ash up to a maximum of 35% of clean-coal ... Source: Wisconsin-Milwaukee, University of - Department of Civil Engineering and...

391

E-Print Network 3.0 - ash formation transformations Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

chlorinated phenols because their presence in the ash could result in the formation of dioxins and furans... THE USE OF MUNICIPAL WASTE COMBUSTOR ASH AS A PARTIAL REPLACEMENT OF...

392

Continuous air agglomeration method for high carbon fly ash beneficiation  

DOE Patents [OSTI]

The carbon and mineral components of fly ash are effectively separated by a continuous air agglomeration method, resulting in a substantially carboree mineral stream and a highly concentrated carbon product. The method involves mixing the fly ash comprised of carbon and inorganic mineral matter with a liquid hydrocarbon to form a slurry, contacting the slurry with an aqueous solution, dispersing the hydrocarbon slurry into small droplets within the aqueous solution by mechanical mixing and/or aeration, concentrating the inorganic mineral matter in the aqueous solution, agglomerating the carbon and hydrocarbon in the form of droplets, collecting the droplets, separating the hydrocarbon from the concentrated carbon product, and recycling the hydrocarbon.

Gray, McMahon L. (Pittsburgh, PA); Champagne, Kenneth J. (Monongahela, PA); Finseth, Dennis H. (Pittsburgh, PA)

2000-01-01T23:59:59.000Z

393

Continuous air Agglomeration Method for high Carbon fly ash Beneficiation  

SciTech Connect (OSTI)

The carbon and mineral components of fly ash are effectively separated by a continuous air agglomeration method, resulting in a substantially carbon-free mineral stream and a highly concentrated carbon product. The method involves mixing the fly ash comprised of carbon and inorganic mineral matter with a liquid hydrocarbon to form a slurry, contacting the slurry with an aqueous solution, dispersing the hydrocarbon slurry into small droplets within the aqueous solution by mechanical mixing and/or aeration, concentrating the inorganic mineral matter in the aqueous solution, agglomerating the carbon and hydrocarbon in the form of droplets, collecting the droplets, separating the hydrocarbon from the concentrated carbon product, and recycling the hydrocarbon.

Gray, McMahan L.; Champagne, Kenneth J.; Finseth, Dennis H.

1998-09-29T23:59:59.000Z

394

The Sensitivity of DPF Performance to the Spatial Distribution of Ash Generated from Six Lubricant Formulations  

Broader source: Energy.gov [DOE]

Discusses potential of DPF pressure drop reduction by optimizing the spatial distribution of ash inside DPF inlet channel

395

Conversion of oil shale ash into zeolite for cadmium and lead removal from wastewater  

E-Print Network [OSTI]

Conversion of oil shale ash into zeolite for cadmium and lead removal from wastewater Reyad; available online 29 October 2003 Abstract A by-product fly ash from oil shale processing was converted shale; Ash; Zeolite; Cadmium and lead removal 1. Introduction Oil shale exists in Jordan with large

Shawabkeh, Reyad A.

396

Hydration and strength development of binder based on high-calcium oil shale fly ash  

SciTech Connect (OSTI)

The properties of high-calcium oil shale fly ash and low-calcium coal fly ash, which are produced in Israeli power stations, were investigated. High-calcium oil shale fly ash was found to contain a great amount of CaO{sub free} and SO{sub 3} in the form of lime and anhydrite. Mixtures of high-calcium oil shale fly ash and low-calcium coal fly ash, termed fly ash binder, were shown to cure and have improved strength. The influence of the composition and curing conditions on the compressive strength of fly ash binders was examined. The microstructure and the composition of fly ash binder after curing and long-term exposure in moist air, water and open air conditions were studied. It was determined that ettringite is the main variable in the strength and durability of cured systems. The positive effect of calcium silicate hydrates, CSH, which are formed by interaction of high-calcium oil shale fly ash and low-calcium coal fly ash components, on the carbonation and dehydration resistance of fly ash binder in open air is pronounced. It was concluded that high-calcium oil shale fly ash with high CaO{sub free} and SO{sub 3} content can be used as a binder for building products.

Freidin, C. [Ben-Gurion Univ. of the Negev, Sede-Boqer (Israel)] [Ben-Gurion Univ. of the Negev, Sede-Boqer (Israel)

1998-06-01T23:59:59.000Z

397

Spectroscopy of infrared emission characteristics of thermal power plant boiler coal ash deposits  

Science Journals Connector (OSTI)

Thermal radiation characteristics of ash deposits on a coal combustion boiler of an electric power plant are investigated. Normal emittance spectra in 2.5-25 µm wavelength region and total normal emittance are measured on four kinds of ash at 600-1100K ... Keywords: ash deposit, emittance, pulverized coal combustion boiler furnace, spectroscopic measurement, thermal radiation

Aleksandar Saljnikov; Darko Goricanec; Danijela Dobersek; Dorde Kozic

2007-05-01T23:59:59.000Z

398

Correlation relations between mineralogical components in ash from Kaa-Khem coals  

SciTech Connect (OSTI)

Regression analysis was used to study correlation relations between the mineral components of coals. Regularities in the variability of the concentrations of individual ash-forming elements with changing ash contents of coals and changing seam depth were found. The X-ray diffraction characteristics of coal ashes and the qualitative composition of their mineralogical components are presented.

N.N. Yanchat; L.Kh. Tas-ool [Russian Academy of Sciences, Kyzyl (Russia). Tuvinian Institute for Complex Exploration of Natural Resources

2008-08-15T23:59:59.000Z

399

Cleanup Verification Package for the 126-F-1, 184-F Powerhouse Ash Pit  

SciTech Connect (OSTI)

This cleanup verification package documents completion of remedial action for the 126-F-1, 184-F Powerhouse Ash Pit. This waste site received coal ash from the 100-F Area coal-fired steam plant. Leakage of process effluent from the 116-F-14 , 107-F Retention Basins flowed south into the ash pit, contaminating the northern portion.

S. W. Clark and H. M Sulloway

2007-10-31T23:59:59.000Z

400

Cleanup Verification Package for the 126-F-1, 184-F Powerhouse Ash Pit  

SciTech Connect (OSTI)

This cleanup verification package documents completion of remedial action for the 126-F-1, 184-F Powerhouse Ash Pit. This waste site received coal ash from the 100-F Area coal-fired steam plant. Leakage of process effluent from the 116-F-14 , 107-F Retention Basins flowed south into the ash pit, contaminating the northern portion.

S. W. Clark and H. M. Sulloway

2007-09-26T23:59:59.000Z

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Color Removal from Pulp Mill Effluent Using Coal Ash Produced from Georgia Coal Combustion Power Plants  

E-Print Network [OSTI]

/0702/citing-global- warming-georgia-judge-blocks-coal-plant/picture1.jpg/5307532-1-eng-US/picture1.jpgColor Removal from Pulp Mill Effluent Using Coal Ash Produced from Georgia Coal Combustion Power color from pulp mill effluent using coal ash. Prevent coal ash adsorbent from leaching arsenic

Hutcheon, James M.

402

BEyond thE BAcklAsh: equity and participation  

E-Print Network [OSTI]

BEyond thE BAcklAsh: equity and participation in bicycle planning. executive summary | May 2011 Camp Conor Clarke Joe Delia Jennifer Harris-Hernandez Sungbae Park Brian Paul Scott Richmond Sam Stein Jessame Hannus ValeriaTreves Bill DiPaola Kristen Jones Paul Steely White Katie Lyon-Hart We thank

Qiu, Weigang

403

Cathode-Luminescence of Rare Earths in Coal Ash  

Science Journals Connector (OSTI)

... Samples of a number of Indian coals (from Darjeeling, Assam, Raniganj, Jharia and Hyderabad) were incinerated in thin layers ... in an electric furnace at 400° C. The presence of rare earths in the ashes so obtained could not be detected by arc spectrographic analysis with a current of 10 ...

BIBHUTI MUKHERJEE

1949-03-12T23:59:59.000Z

404

Thermal properties of high-volume fly ash  

E-Print Network [OSTI]

volume of concrete placed is receiving renewed interest. Concrete mixtures in which the fly ash replaces Academic Group on Concrete Technology, Universidad Auto´noma de Nuevo Leo´n, Monterrey, Nuevo Leo´n, Mexico are critical in assessing the potential energy efficiency of HVFA concrete structures, such as residential

Bentz, Dale P.

405

Spectroscopic research on infrared emittance of coal ash deposits  

SciTech Connect (OSTI)

This paper deals with thermal radiation characteristics of ash deposits on a pulverized coal combustion boiler of an electric power plant. Normal emittance spectra in the near to medium infrared (2.5-25 {mu}m) region and total normal emittances were measured on four kinds of ground ash deposits. Measurements were conducted in the 570-1460 K temperature range which is common for boiler furnaces, by both heating and cooling the ash samples, with the aim to study the effect of their thermal history. Dependence of emittance on wavelength, temperature and chemical composition was studied, too. Samples were tested for transparency (opacity) to verify the accuracy of results. It was determined that the thicknesses used for the ash powders are opaque for infrared radiation for thicknesses in the order of a millimeter. Tests have shown that spectral emittance increases with an increase of wavelength with a characteristic pattern common for all samples. Spectral normal emittance increases strongly with temperature at shorter wavelengths and remains high and unchanged at longer ones. Emittance spectra are not very sensitive to chemical composition of ashes especially beyond {lambda} {approx} 5 {mu}m. With an increase of temperature, total emittance of the powdered sample decreases to a minimum value around 1200 K. Further temperature rise induces an increase of total emittance due to sintering in the ash. On cooling, the emittance increases monotonically following the hysteresis. Quantitative directions for evaluating thermal radiation characteristics of ash deposits for the merits of the safety design of boiler furnaces were proposed. That comprises correlating the experimentally obtained emittance spectra with curves of simple analytical form, i.e., a continuous function of minimum emittance vs. wavelength. The proposed method can be extended to other specimens from the same furnace and used to determine correlations for thermal calculation of old and design of new furnaces - with similar geometry and combusting similar coal. The method is potentially applicable to completely different boiler furnaces combusting different coal, and the authors recommend running the tests with new deposit samples. The data will then be applicable to the thermal design of a whole new class of furnaces, having similar geometry and combusting similar coal. This is expected to greatly enhance the accuracy and precision of thermal calculation as well as the efficiency of thermal design of steam boilers. (author)

Saljnikov, Aleksandar; Komatina, Mirko; Gojak, Milan [Department of Thermomechanics, Faculty of Mechanical Engineering, University of Belgrade, Kraljice Marije 16, 11120 Belgrade 35 (RS); Vucicevic, Biljana [Laboratory for Thermal Engineering, Institute of Nuclear Sciences VINCA, P.O. Box 522, Belgrade 11001 (RS); Goricanec, Darko [Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, Maribor 2000 (Slovenia); Stevanovic, Zoran [Faculty of Mining and Geology, University of Belgrade, Dusina 7, 11120 Belgrade 35 (RS)

2009-11-15T23:59:59.000Z

406

A Coupled Nanoindentation/SEM-EDS Study on Low Water/Cement Ratio Portland Cement Paste: Evidence for C-S-H/Ca(OH)[subscript 2] Nanocomposites  

E-Print Network [OSTI]

A low water/cement ratio (w/c=0.20) hydrated Portland cement paste was analyzed by grid-indentation coupled with ex situ scanning electron microscope-energy-dispersive X-ray spectra (SEM-EDS) analysis at each indentation ...

Chen, Jeffrey J.

407

Environment impact from ash disposal of the thermal power plant 'Kosova A'  

Science Journals Connector (OSTI)

Mining activities impact on environment is as old as these activities themselves. It is estimated that thermal power plants in Kosova produce about 1.6 million tons of ash per year, and all ash produced is disposed as waste material. The main problems for environment pollution are the ash dumps containing more than 40 million tons of ash cover about 150 ha of land. The ash dumps sites of the thermal power plant Kosovo 'A', which are situated among settlement, present one of the most serious problems in the environment and are one of the potential dangers for underground and surface water.

Sabri Avdullahi; Isalm Fejza; Raif Bytyqi

2010-01-01T23:59:59.000Z

408

Ash Research from Palm Coast, Florida to Banff, Canada: Entry of Biomass in Modern Power Boilers  

Science Journals Connector (OSTI)

Six laboratories participated, and each performed five analyses, on three bituminous coal samples, focusing on their content of calcite, kaolinite, pyrite, and quartz. ... CCSEM of these ashes revealed that the fly ashes and deposits contained high quantities of salts, especially KCl, and varying quantities of K- and Ca-silicates, whereas the bottom ashes consisted of a mixture of quartz, K-, Ca-, and Al-silicates. ... Wang and Baxter(134) presented a work that systematically investigated the performance of biomass fly ash concrete, including mixtures of biomass fly ash and calcium hydroxide, with respect to strength, kinetics, and durability. ...

Flemming J. Frandsen

2009-04-23T23:59:59.000Z

409

Ash vaporization in circulating fluidized bed coal combustion  

SciTech Connect (OSTI)

In this work, the vaporization of the ash-forming constituents in circulating fluidized bed combustion (CFBC) in a full-scale 80 MW{sub th} unit was studied. Ash vaporization in CFBC was studied by measuring the fly ash aerosols in a full-scale boiler upstream of the electrostatic precipitator (ESP) at the flue gas temperature of 125{degree}C. The fly ash number size distributions showed two distinct modes in the submicrometer size range, at particle diameters 0.02 and 0.3 {mu}m. The concentration of the ultrafine 0.02-{mu}m mode showed a large variation with time and it decreased as the measurements advanced. The concentration of the 0.02-{mu}m mode was two orders of magnitude lower than in the submicrometer mode observed earlier in the bubbling FBC and up to three orders of magnitude lower than in the pulverized coal combustion. Scanning electron micrographs showed few ultrafine particles. The intermediate mode at 0.3 {mu}m consisted of particles irregular in shape, and hence in this mode the particles had not been formed via a gas to particle route. We propose that the 0.3-{mu}m mode had been formed from the partial melting of the very fine mineral particles in the coal. The mass size distribution in the size range 0.01-70 {mu}m was unimodal with maximum at 20 {mu}m. Less than 1% of the fly ash particles was found in the submicrometer size range. 35 refs., 8 figs., 3 tabs.

Lind, T.; Kauppinen, E.I.; Maenhaut, W. [Univ. of Gent (Belgium); Shah, A.; Huggins, F. [Univ. of Kentucky, Lexington, KY (United States)

1996-04-01T23:59:59.000Z

410

Climate VISION: Private Sector Initiatives: Cement: Resources and Links -  

Office of Scientific and Technical Information (OSTI)

Federal/State Programs Federal/State Programs DOE Industrial Materials of the Future Industrial Materials for the Future (IMF) is a crosscutting activity of the Industrial Technologies Program. The mission of IMF is to lead a national effort to research, design, develop, engineer, and test new and improved materials, for the Industries of the Future. ENERGY STAR Focus for Cement Manufacturing The U.S. cement manufacturers and EPA work together in an ENERGY STAR Focus on energy efficiency within the industry. Participating companies work with EPA to institute or improve their corporate energy management programs and the energy performance of their operations. Through ENERGY STAR, EPA provides tools to gauge plant and program energy performance, a forum for elevating energy management in the industry, and recognition for superior

411

The impact of cement parameters on Delayed Ettringite Formation  

Science Journals Connector (OSTI)

Delayed Ettringite Formation (DEF) in concrete is likely to lead to swelling and cracking in structures which have undergone early age heating to a temperature of over 65 °C. Application of a method that accelerates this process has made it possible to study the impact of cement properties on DEF. For two temperatures reached by the concrete (75 °C or 85 °C), the study considers a domain defined by the sulphate content [2.6–3.6%], the alkali content [0.5–1%] and the Blaine specific area [3330–4635 cm2/g] of the cement. The impact of these parameters and the interactions between them on swelling are discussed. Monitoring of the dynamic elastic modulus of the concretes shows that this property may be reduced by DEF, but that it may increase again once the swelling process has ceased, probably due to the gradual filling of voids by ettringite formed under conditions of limited supersaturation.

A. Pavoine; X. Brunetaud; L. Divet

2012-01-01T23:59:59.000Z

412

Carbon emissions reductions for a specific new cement plant:  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

5346 5346 Evaluating Clean Development Mechanism Projects in the Cement Industry Using a Process-Step Benchmarking Approach Michael Ruth, Ernst Worrell, and Lynn Price Energy Analysis Department Environmental Energy Technologies Division Ernest Orlando Lawrence Berkeley National Laboratory University of California Berkeley, California 94720 July 2000 This work was supported by the Climate Policies and Program Division, Office of Policy, Planning, and Evaluation, U.S. Environmental Protection Agency through the U.S. Department of Energy under Contract No. DE-AC03-76SF00098 ii iii Evaluating Clean Development Mechanism Projects in the Cement Industry Using a Process-Step Benchmarking Approach Michael Ruth, Ernst Worrell, and Lynn Price Energy Analysis Department Environmental Energy Technologies Division

413

Utilization of SRS pond ash in controlled low strength material. Technical report  

SciTech Connect (OSTI)

Design mixes for Controlled Low Strength Material (CLSM) were developed which incorporate pond ashes (fly ashes) from the A-Area Ash Pile, the old F-Area Ash Basin and the D-Area Ash Basin. CLSM is a pumpable, flowable, excavatable backfill used in a variety of construction applications at SRS. Results indicate that CLSM which meets all of the SRS design specifications for backfill, can be made with the A-, D-, and F-Area pond ashes. Formulations for the design mixes are provided in this report. Use of the pond ashes may result in a cost savings for CLSM used at SRS and will utilize a by-product waste material, thereby decreasing the amount of material requiring disposal.

Langton, C.A.; Rajendran, N.

1995-12-01T23:59:59.000Z

414

Test research of bed ash coolers for a 50 MWe CFB boiler  

SciTech Connect (OSTI)

CFB boilers have been developed and commercialized in China. As one of the main auxiliaries of FBC boilers, the bed ash cooler plays an important role in regular operation of the boilers. A 50 MWe 2-shaped CFB boiler will be put into operation in North China. Many kinds of bed ash cooling systems for this boiler had been designed and compared. Then the optimum bed ash coolers were determined and made. Experimental research and pilot-scale test for the bed ash coolers were also carried out. The result indicates that the bed ash cooler can be operated reliably and can meet the demand for cooling bed ash of the 50 MWe CFB boiler. The test data are very useful for further improving the performance of ash coolers.

Chen, H.P.; Lu, J.D.; Lin, Z.J.; Liu, D.C. [Huazhong Univ. of Science and Technology, Wuhan, Hubei (China). National Lab. of Coal Combustion; Hu, L.L.; Xie, P.J.; Yan, H.X.; Liu, M.C. [Hubei Boiler Auxiliary Factory, Jingshan, Hubei (China)

1995-12-31T23:59:59.000Z

415

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

SciTech Connect (OSTI)

China's cement industry, which produced 1,388 million metric tons (Mt) of cement in 2008, accounts for almost half of the world's total cement production. Nearly 40% of China's cement production is from relatively obsolete vertical shaft kiln (VSK) cement plants, with the remainder from more modern rotary kiln cement plants, including plants equipped with new suspension pre-heater and pre-calciner (NSP) kilns. Shandong Province is the largest cement-producing Province in China, producing 10% of China's total cement output in 2008. This report documents an analysis of the potential to improve the energy efficiency of NSP kiln cement plants in Shandong Province. Sixteen NSP kiln cement plants were surveyed regarding their cement production, energy consumption, and current adoption of 34 energy-efficient technologies and measures. Plant energy use was compared to both domestic (Chinese) and international best practice using the Benchmarking and Energy Saving Tool for Cement (BEST-Cement). This benchmarking exercise indicated an average technical potential primary energy savings of 12% would be possible if the surveyed plants operated at domestic best practice levels in terms of energy use per ton of cement produced. Average technical potential primary energy savings of 23% would be realized if the plants operated at international best practice levels. Energy conservation supply curves for both fuel and electricity savings were then constructed for the 16 surveyed plants. Using the bottom-up electricity conservation supply curve model, the cost-effective electricity efficiency potential for the studied cement plants in 2008 is estimated to be 373 gigawatt hours (GWh), which accounts for 16% of total electricity use in the 16 surveyed cement plants in 2008. Total technical electricity-saving potential is 915 GWh, which accounts for 40% of total electricity use in the studied plants in 2008. The fuel conservation supply curve model shows the total technical fuel efficiency potential equal to 7,949 terajoules (TJ), accounting for 8% of total fuel used in the studied cement plants in 2008. All the fuel efficiency potential is shown to be cost effective. Carbon dioxide (CO{sub 2}) emission reduction potential associated with cost-effective electricity saving is 383 kiloton (kt) CO{sub 2}, while total technical potential for CO{sub 2} emission reduction from electricity-saving is 940 ktCO{sub 2}. The CO{sub 2} emission reduction potentials associated with fuel-saving potentials is 950 ktCO{sub 2}.

Price, Lynn; Hasanbeigi, Ali; Lu, Hongyou; Wang, Lan

2009-10-01T23:59:59.000Z

416

Rheology of Carbon Fibre Reinforced Cement-Based Mortar  

SciTech Connect (OSTI)

Carbon fibre reinforced cement based materials (CFRCs) offer the possibility of fabricating 'smart' electrically conductive materials. Rheology of the fresh mix is crucial to satisfactory moulding and fresh CFRC conforms to the Bingham model with slight structural breakdown. Both yield stress and plastic viscosity increase with increasing fibre length and volume concentration. Using a modified Viskomat NT, the concentration dependence of CFRC rheology up to 1.5% fibre volume is reported.

Banfill, Phillip F. G.; Starrs, Gerry; McCarter, W. John [School of the Built Environment, Heriot-Watt University, Edinburgh, EH14 4AS (United Kingdom)

2008-07-07T23:59:59.000Z

417

Polymer-cement geothermal-well-completion materials. Final report  

SciTech Connect (OSTI)

A program to develop high-temperature polymer cements was performed. Several formulations based on organic and semi-inorganic binders were evaluated on the basis of mechanical and thermal stability, and thickening time. Two optimized systems exhibited properties exceeding those required for use in geothermal wells. Both systems were selected for continued evaluation at the National Bureau of Standards and contingent upon the results, for field testing in geothermal wells.

Zeldin, A.N.; Kukacka, L.E.

1980-07-01T23:59:59.000Z

418

Corrosion of aluminium metal in OPC- and CAC-based cement matrices  

SciTech Connect (OSTI)

Corrosion of aluminium metal in ordinary Portland cement (OPC) based pastes produces hydrogen gas and expansive reaction products causing problems for the encapsulation of aluminium containing nuclear wastes. Although corrosion of aluminium in cements has been long known, the extent of aluminium corrosion in the cement matrices and effects of such reaction on the cement phases are not well established. The present study investigates the corrosion reaction of aluminium in OPC, OPC-blast furnace slag (BFS) and calcium aluminate cement (CAC) based systems. The total amount of aluminium able to corrode in an OPC and 4:1 BFS:OPC system was determined, and the correlation between the amount of calcium hydroxide in the system and the reaction of aluminium obtained. It was also shown that a CAC-based system could offer a potential matrix to incorporate aluminium metal with a further reduction of pH by introduction of phosphate, producing a calcium phosphate cement.

Kinoshita, Hajime, E-mail: h.kinoshita@sheffield.ac.uk [Department of Materials Science and Engineering, The University of Sheffield, Mappin Street, Sheffield, S1 3JD (United Kingdom)] [Department of Materials Science and Engineering, The University of Sheffield, Mappin Street, Sheffield, S1 3JD (United Kingdom); Swift, Paul; Utton, Claire [Department of Materials Science and Engineering, The University of Sheffield, Mappin Street, Sheffield, S1 3JD (United Kingdom)] [Department of Materials Science and Engineering, The University of Sheffield, Mappin Street, Sheffield, S1 3JD (United Kingdom); Carro-Mateo, Beatriz [The Public University of Navarra, C/Esquíroz, 30 trasera, Pamplona 31007 (Spain)] [The Public University of Navarra, C/Esquíroz, 30 trasera, Pamplona 31007 (Spain); Marchand, Geraldine [The National Institute of Applied Sciences (INSA) Lyon, 20 Avenue Albert Einstein 69621 Villeurbanne Cedex (France)] [The National Institute of Applied Sciences (INSA) Lyon, 20 Avenue Albert Einstein 69621 Villeurbanne Cedex (France); Collier, Nick [National Nuclear Laboratory, Chadwick House, Birchwood Park, Warrington, WA3 6AE (United Kingdom)] [National Nuclear Laboratory, Chadwick House, Birchwood Park, Warrington, WA3 6AE (United Kingdom); Milestone, Neil [Industrial Research Ltd., 69 Gracefield Road, Lower Hutt, 5040 (New Zealand)] [Industrial Research Ltd., 69 Gracefield Road, Lower Hutt, 5040 (New Zealand)

2013-08-15T23:59:59.000Z

419

Exponential coefficient plots for identifying cement channels from temperature logs  

SciTech Connect (OSTI)

One technique for identifying a cement channel in such a well is to inject cold water or diesel fuel for a period of time, followed by recording shut-in temperature profiles after the injection ceases. Qualitative judgements are made from the appearance of these profiles in order to confirm the existence of a channel. Alternatively, by processing the temperature logs mathematically, an exponential coefficient may be calculated and plotted against depth. This exponential coefficient plot is very responsive to the presence of cold fluid in a cement channel, and confirms a channel's existence quantitatively and conclusively. This paper discusses use of such a mathematical relationship in a predictive fashion for identifying injection zones. Methods are given for deriving and plotting the exponential coefficients from temperature logs of a well placed on cold fluid injection. Three examples are presented on the application of exponential coefficient plots to actual field logs for confirmation of suspected channels and for assessment of the uniformity of cement bonding.

Barnette, J.C.; Lanuke, E.W.; Carlson, N.R.

1984-01-01T23:59:59.000Z

420

Leaching of mixtures of biochar and fly ash  

SciTech Connect (OSTI)

Increasing atmospheric levels of greenhouse gases, especially CO2, and their effects on global temperature have led to interest in the possibility of carbon storage in terrestrial environments. Both the residual char from biomass pyrolysis (biochar) and fly ash from coal combustion have the potential to significantly expand terrestrial sequestration options. Both biochar and fly ash also have potentially beneficial effects on soil properties. Fly ash has been shown to increase porosity, water-holding capacity, pH, conductivity, and dissolved SO42-, CO32-, Cl- and basic cations. Adding biochar to soil generally raises pH, increases total nitrogen and total phosphorous, encourages greater root development, improves cation exchange capacity and decreases available aluminum. A combination of these benefits likely is responsible for observed increases in yields for crops such as corn and sugarcane. In addition, it has been found that soils with added biochar emit lower amounts of other greenhouse gases (methane and nitrous oxide) than do unamended soils. Biochar and fly ash amendments may be useful in promoting terrestrial carbon sequestration on currently underutilized and degraded lands. For example, about 1% of the US surface lands consist of previously mined lands or highway rights-of-way. Poorly managed lands could count for another 15% of US area. Biochar and fly ash amendments could increase productivity of these lands and increase carbon storage in the soil. Previous results showed minimal leaching of organic carbon and metals from a variety of fly ashes. In the present study, we examined the properties of mixtures of biochar, fly ash, and soil and evaluated the leaching of organic carbon and metals from these mixtures. The carbon sorption experiments showed release of carbon from biochar, rather than sorption, except at the highest concentrations in the Biochar HW sample. Similar results were obtained by others for oxidative leaching of bituminous coal, in which more C was released as dissolved C than was oxidized to CO2 by the oxygen in water. We confirmed that both fly ash and two types of biochar (oak char [OKEB], and hardwood [HW] char) exhibited minimal leaching of heavy metals including Cr, Ni, Zn, Ga, and Ag, and no detectable leaching of Pb or Cd (data not shown) under the conditions tested. The Biochar HW had a slightly higher C/N ratio (334) and pH (7.7) than did the Biochar OKEB (284 and 6.5). There was no toxicity exhibited by the fly ash (not shown) or biochar leachates as measured by the Microtox© assay under the conditions tested. In previous results no toxicity was reported in testing the fly ash samples except for one high-pH sample. The most notable leachate component from both types of biochar, but not the fly ash, was organic carbon with the HW biochar leaching less organic carbon than the OKEB biochar (5.71 ppm vs. 59.3 ppm). Alone (in batch sorption experiments), or in mixtures of 90% soil and 10% biochar (column studies), we noted significant loss of carbon from the biochar into soluble components. However, when we added fly ash to the column experiments (80% soil, 10% fly ash, and 10% biochar) we observed significant decreases in the amounts of C leached (20% for HW, and 47% for OKEB). The results indicate that applying a combination of fly ash and biochar may result in maximizing the amount of carbon sequestration in soil while also increasing beneficial soil properties and fertility. The lower amount of carbon leached from the HW biochar compared to the OKEB biochar is likely due to the more recalcitrant form of the carbon in the HW char, due to its preparation at a higher temperature (600 şC) than the OKEB biochar (450 şC). High heat treatment temperatures during biochar preparation increase both the total carbon content of the biochar and the proportion of the carbon that is present in fused aromatic rings resistant to chemical and physical degradation.

Palumbo, Anthony V.; Porat, Iris; Phillips, Jana R.; Amonette, James E.; Drake, Meghan M.; Brown, Steven D.; Schadt, Christopher W.

2009-06-22T23:59:59.000Z

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Study of cementing practices applied to the shallow casing in offshore wells  

SciTech Connect (OSTI)

Survey information shows annular gas flow associated with cementing defects to be a major problem in shallow casing strings offshore as well as in other cemented strings in oil and gas wells. The gas flow hazard to safety, environment, and economics could be reduced by an aggressive program keyed to prevent gas migration. The program components are: (1) historical data base; (2) training; (3) research of cement hydration in a long, thin column; and (4) development of logging-surveillance devices.

Martinez, J.; McDonald, W.J.

1980-10-01T23:59:59.000Z

422

'The Overriding Demand for Energy Conservation in the Cement Industry' An Update  

E-Print Network [OSTI]

and argillaceous materials such as limestone and clay or shale into an intermediate fused material called clinker, which is subse quently ground together with a small amount of gypsum. Portland cement is the principal material produced by the U. S. cement..., energy con sumption pe r ton of cement produced dropped overall by 10 percent, despite considerably higher electric power requirements for pollution control and coal-handling facilities. It is significant that the industry has rapidly con verted its...

Spellman, L. U.

1981-01-01T23:59:59.000Z

423

Formation of ettringite in Portland cement/calcium aluminate cement/calcium sulfate ternary system hydrates at lower temperatures  

Science Journals Connector (OSTI)

To explore the formation of ettringite at lower temperatures in the Portland cement/calcium aluminate cement/calcium sulfate ternary system hydrates, the effect of calcium sulfate variety on the setting time of the ternary system and the strength development of its mortars at 0, 5, 10 and 20 °C were investigated. The formation of ettringite was further analyzed using XRD and ESEM. The results show that, as temperature increases, both initial and final setting time are shortened and that compressive and flexural strength are enhanced. In particular, mortars with anhydrite develop higher strength between 0 and 10 °C but lower strength at 20 °C than those with hemihydrate. Further, pastes with anhydrite set faster than those with hemihydrate. It is also found that both the formation rate and amount of ettringite are sensitive to temperature and calcium sulfate variety.

Linglin Xu; Peiming Wang; Guofang Zhang

2012-01-01T23:59:59.000Z

424

Measurement of natural radioactivity and radon exhalation rate in fly ash samples from a thermal power plant and estimation of radiation doses  

Science Journals Connector (OSTI)

Fly ash produced by coal-burning in thermal power station has become a subject of world wide interest in recent years because of its diverse uses in construction activities and considerable economic and environmental importance. Fly ash is used in the production of bricks, sheets, cement and also in land filling etc. Indian coals used in thermal power plants are found to have high ash contents, resulting in the production of large amount of fly ash. Coal contains radionuclides including uranium (the source of inert gas radon), Th and K. Thus coal combustion results in enhanced concentration of natural radionuclides 226Ra, 232Th and 40K. Since these radionuclides concentration in fly ash plays an important role in health physics it is important to measure radionuclides concentration in fly ash. In the present work enhanced radioactivity and radon exhalation rate from fly ash samples collected from a thermal power plant of NTPC (National Thermal Power Corporation), Dadri (U.P.) India, have been measured. A high resolution gamma ray spectroscopic system has been used for the measurement of natural radioactivity (226Ra, 232Th and 40K). Gamma spectrometric measurements were carried out at Inter-University Accelerator Centre, New Delhi using a coaxial n-type \\{HPGe\\} detector (EG&G, ORTEC, Oak Ridge, USA). Activity concentration of 226Ra varies from 81.8 ± 2.2 to 177.3 ± 10.0 Bq kg?1 with an average value of 118.6 ± 7.4 Bq kg?1 and of 232Th from 111.6 ± 3.2 to 178.5 ± 3.9 Bq kg?1 with an average value of 147.0 ± 3.4 Bq kg?1. 40K activity was found to be below detection limit in some samples while other samples have shown potassium activity to vary from 365.9 ± 4.8 to 495.9 ± 6.2 Bq kg?1 with an average value of 352.0 ± 4.5 Bq kg?1. Surface radon exhalation rates (EA) and Mass exhalation rates (EM) in these samples were measured by “Sealed can technique” using LR-115 type II track detectors. EA is found to vary from 80.1 ± 9.3 to 242.7 ± 16.3 mBq m?2 h?1 with an average value 155.5 ± 12.8 mBq m?2 h?1, while EM varies from 3.1 ± 0.4 to 9.3 ± 0.6 mBq kg?1 h?1 with an average value of 6.0 ± 0.5 mBq kg?1 h?1. Radium equivalent activity (Raeq), related to the external gamma dose and internal dose due to radon and its daughters range from 283.2 to 422.4 Bq kg?1 with an average value of 353.9 Bq kg?1. The calculated values of external hazard index (Hex) vary from 0.77 to 1.87 with an average value of 1.03. Most of the samples show the value of Raeq close to the allowed upper limit of 370 Bq kg?1 and Hex close to unity respectively except in two samples. Annual effective dose varies from 0.15 to 0.23 mSv y?1 with an average value 0.19 mSv y?1.

Mamta Gupta; Ajay Kumar Mahur; Rati Varshney; R.G. Sonkawade; K.D. Verma; Rajendra Prasad

2013-01-01T23:59:59.000Z

425

JV Task 6 - Coal Ash Resources Research Consortium Research  

SciTech Connect (OSTI)

The Coal Ash Resources Research Consortium{reg_sign} (CARRC{reg_sign}, pronounced 'cars') focuses on performing fundamental and applied scientific and engineering research emphasizing the environmentally safe, economical use of coal combustion by-products (CCBs). CARRC member organizations, which include utilities and marketers, are key to developing industry-driven research in the area of CCB utilization and ensuring its successful application. The U.S. Department of Energy is a partner in CARRC through the EERC Jointly Sponsored Research Program (JSRP), which provides matching funds for industrial member contributions and facilitates an increased level of effort in CARRC. CARRC tasks were designed to provide information on CCB performance, including environmental performance, engineering performance, favorable economics, and improved life cycle of products and projects. CARRC technical research tasks are developed based on member input and prioritization. CARRC special projects are developed with members and nonmembers to provide similar information and to support activities, including the assembly and interpretation of data, support for standards development and technology transfer, and facilitating product development and testing. CARRC activities from 1998 to 2007 included a range of research tasks, with primary work performed in laboratory tasks developed to answer specific questions or evaluate important fundamental properties of CCBs. CARRC topical reports were prepared on several completed tasks. Specific CARRC 1998B2007 accomplishments included: (1) Development of several ASTM International Standard Guides for CCB utilization applications. (2) Organization and presentation of training courses for CCB professionals and teachers. (3) Development of online resources including the Coal Ash Resource Center, Ash from Biomass in Coal (ABC) of cocombustion ash characteristics, and the Buyer's Guide to Coal-Ash Containing Products. In addition, development of expanded information on the environmental performance of CCBs in utilization settings included the following: (1) Development of information on physical properties and engineering performance for concrete, soil-ash blends, and other products. (2) Training of students through participation in CARRC research projects. (3) Participation in a variety of local, national, and international technical meetings, symposia, and conferences by presenting and publishing CCB-related papers.

Debra Pflughoeft-Hassett; Tera Buckley; Bruce Dockter; Kurt Eylands; David Hassett; Loreal Heebink; Erick Zacher

2008-04-01T23:59:59.000Z

426

Solidification/Stabilization of High Nitrate and Biodenitrified Heavy Metal Sludges with a Portland Cement/Flyash System  

SciTech Connect (OSTI)

Pond 207C at Rocky Flats Environmental Technology Site (RFETS) contains process wastewaters characterized by high levels of nitrates and other salts, heavy metal contamination, and low level alpha activity. The purpose of this research was to investigate the feasibility of treating a high-nitrate waste, contaminated with heavy metals, with a coupled dewateriug and S/S process, as well as to investigate the effects of biodenitrification pretreatment on the S/S process. Pond 207C residuals served as the target waste. A bench-scale treatability study was conducted to demonstrate an S/S process that would minimize final product volume without a significant decrease in contaminant stabilization or loss of desirable physical characteristics. The process formulation recommended as a result a previous S/S treatability study conducted on Pond 207C residuals was used as the baseline formulation for this research. Because the actual waste was unavailable due to difficulties associated with radioactive waste handling and storage, a surrogate waste, of known composition and representative of Pond 207C residuals, was used throughout this research. The contaminants of regulatory concern added to the surrogate were cadmium, chromium, nickel, and silver. Product volume reduction was achieved by dewatering the waste prior to S/S treatment. The surrogate was dewatered by evaporation at 60 to 80 C to total solids contents from 43% to 78% by weight, and treated with Portland cement and fly ash. Two cement to flyash ratios were tested, 2:1 and 1:2, by weight. Contaminant leachability testing was conducted with a 0.5 water to pozzolan (the cement/flyash mixture) ratio and both cement to flyash ratios. Each product was tested for unconfined compressive strength (UCS) and for contaminant leachability by the Toxicity Characteristics Leaching Procedure (TCLP). At the highest solids content achieved by dewatering, 78% solids by weight, the predicted final waste form volume f or Pond 207C residuals after S/S processing was reduced by over 60 A when compared to the baseline process. All tested process formulations produced final waste forms with an average UCS of 100 psi or greater. Percent fixation of Chrome (VI) increased at higher solids contents. Fixation of nickel varied from over 87% to 69%, and cadmium fixation was greater than 99% at every solids content tested. Silver TCLP extract concentrations were below detection limits in all cases except for one anomalous measurement. Final product volume reduction was not achieved with coupled dewatering and S/S processing after biodenitrification pretreatment. The waste slurry became too viscous to mix with reagents after dewatering to approximately 55% solids. Fixation of contaminant constituents and final product UCSs were similar to the results of S/S processing without biodenitrification. Due to the lack of volume reduction, biodenitrification was not successful as a pretreatment for S/S processing under the test conditions of this research.

Canonico, J.S.

1995-07-26T23:59:59.000Z

427

E-Print Network 3.0 - african portland cement Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ex... materials produced in rotary kilns are portland cement, quicklime and expanded shale (lightweight) aggregate... is discussed later in this report as a concern when using...

428

E-Print Network 3.0 - affect cement penetration Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: of carbonation of cement-based products. The process of carbonation and the rate of carbonation penetration... were very important factors that affect rate of...

429

Identifying demand market participation opportunities available in cement plants / Izak Daniël Krüger.  

E-Print Network [OSTI]

??South African cement manufacturers are under financial pressure. Sales have declined due to the 2008 recession and electricity costs have tripled from 2005 to 2012.… (more)

Krüger, Izak Daniël

2014-01-01T23:59:59.000Z

430

Estimation of CO2 Emissions from China's Cement Production: Methodologies and Uncertainties  

E-Print Network [OSTI]

emissions from electricity consumption. This paper examinesmainly from electricity consumption for cement production,CO 2 emissions from electricity consumption are usually

Ke, Jing

2014-01-01T23:59:59.000Z

431

Characterization of cement from a well at Teapot Dome Oil Field: Implications for geological sequestration  

Science Journals Connector (OSTI)

Wellbores represent the weakest link in terms of CO2 storage permanence. As a result, special attention to the numerous existing wells that perforate storage formations is needed. The pre-injection condition of the cement can influence the rate (and type) of alteration by the injected CO2 plume. The condition of the existing well cement depends on a variety of factors including wellbore/formation and wellbore/brine interactions as well as the composition and type of cement placed in the well (i.e. type of admixtures used, water/solids ratio, sulfate resistant mixes, etc.). In this paper, the details of recovering wellbore cement from an older well to determine pre-injection seal integrity are described. Petrographical and chemical analyses are presented for samples of cement that were retrieved from a 19-year-old well at Teapot Dome in Wyoming. Examination revealed that the retrieved cement had altered as a result of original slurry composition and with respect to the local downhole wellbore environment. Although samples were obtained from a single well, significant differences were observed in their alteration and condition. Sulfate attack resulted in abundant ettringite formation in a cement sample taken adjacent to the Wall Creek sandstone (3060 ft), while cement taken adjacent to the Tensleep formation (5478 ft) was decalcified and enriched in magnesium, owing to reaction of calcium hydroxide in the cement with the dolomitic formation.

George W. Scherer; Barbara Kutchko; Niels Thaulow; Andrew Duguid; Bryant Mook

2011-01-01T23:59:59.000Z

432

Policy Options for Encouraging Energy Efficiency Best Practices in Shandong Province's Cement Industry  

E-Print Network [OSTI]

Azure. Alternative Fuel Use in the Cement Sector in ShandongAlternative fuels ..6 Resource potential for alternative fuel use in Shandong

Price, Lynn

2013-01-01T23:59:59.000Z

433

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

E-Print Network [OSTI]

Sustainable Development waste heat recovery World Wide FundTaishan Cement Works Waste Heat Recovery and Utilisation forPlant’s Low Temperature Waste Heat Power Generation Project.

Price, Lynn

2010-01-01T23:59:59.000Z

434

Potential Energy Savings and CO2 Emissions Reduction of China's Cement Industry  

E-Print Network [OSTI]

report of cement industry waste heat power generation. ChinaWorrell et al. , 2001). Waste heat recovery (WHR) poweradoption and utilization of waste heat recovery (WHR) power

Ke, Jing

2013-01-01T23:59:59.000Z

435

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

E-Print Network [OSTI]

Banerjee, R. , 2005. Energy Efficiency and Demand SideKiln Systems,” Energy Efficiency in the Cement Industry (Ed.of Industrial Energy Efficiency Measures,” Proceedings of

Price, Lynn

2010-01-01T23:59:59.000Z

436

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

E-Print Network [OSTI]

Banerjee, R. , 2005. Energy Efficiency and Demand SideKiln Systems,” Energy Efficiency in the Cement Industry (Ed.for Improving Energy Efficiency, Reducing Pollution and

Price, Lynn

2010-01-01T23:59:59.000Z

437

Estimation of CO2 Emissions from China's Cement Production: Methodologies and Uncertainties  

E-Print Network [OSTI]

and the coal-dominated energy mix. We note that China’sof final energy consumption and fuel mix of China’s cement

Ke, Jing

2014-01-01T23:59:59.000Z

438

Hydration kinetics of cements by Time-Domain Nuclear Magnetic Resonance: Application to Portland-cement-derived endodontic pastes  

SciTech Connect (OSTI)

Time-Domain Nuclear Magnetic Resonance (TD-NMR) of {sup 1}H nuclei is used to monitor the maturation up to 30 days of three different endodontic cement pastes. The 'Solid-liquid' separation of the NMR signals and quasi-continuous distributions of relaxation times allow one to follow the formation of chemical compounds and the build-up of the nano- and subnano-structured C-S-H gel. {sup 1}H populations, distinguished by their different mobilities, can be identified and assigned to water confined within the pores of the C-S-H gel, to crystallization water and Portlandite, and to hydroxyl groups. Changes of the TD-NMR parameters during hydration are in agreement with the expected effects of the different additives, which, as it is known, can substantially modify the rate of reactions and the properties of cementitious pastes. Endodontic cements are suitable systems to check the ability of this non-destructive technique to give insight into the complex hydration process of real cement pastes.

Bortolotti, Villiam, E-mail: villiam.bortolotti@unibo.it [Department DICAM, University of Bologna, Via Terracini 28, 40131, Bologna (Italy); Fantazzini, Paola [Department of Physics, University of Bologna, Viale Berti Pichat 6/2, 40127, Bologna (Italy); Mongiorgi, Romano [Centre of Biomineralogy, Crystallography and Biomaterials, Department of Earth and Geoenvironmental Sciences, University of Bologna, Piazza di Porta S. Donato, 40127, Bologna (Italy); Sauro, Salvatore [Department of Dental Biomaterials Science Kings College, London Dental Institute at Guy's, King's College and St Thomas' Hospitals, Floor 17 Guy's Tower, Guys Hospital, London Bridge, London SE1 9RT (United Kingdom); Dental Materials, School of Dentistry, University of Granada, Colegio Maximo, Campus de Cartuja, Granada (Spain); Zanna, Silvano [Centre of Biomineralogy, Crystallography and Biomaterials, Department of Earth and Geoenvironmental Sciences, University of Bologna, Piazza di Porta S. Donato, 40127, Bologna (Italy)

2012-03-15T23:59:59.000Z

439

Technology for the Recovery of Fuel and Adsorbent Carbons from Coal Burning Utility Ash Ponds and Landfills  

SciTech Connect (OSTI)

Several sampling techniques were evaluated to recover representative core samples from the ash ponds at Western Kentucky Energy's Coleman Station. The most successful was a combination of continuous-flight augers and specially designed soft-sediment sampling tubes driven by a Hammerhead drill mounted on an amphibious ARGO vehicle. A total of 51 core samples were recovered and analyzed in 3 ft sections and it was determined that there are 1,354,974 tons of ash in Pond C. Of the over 1.35M tons of ash present, 14% or 190K tons can be considered as coarse (+100 mesh). Pond C contains approximately 88K tons of carbon, nearly half of which is coarse and potentially recoverable with spiral concentration while the fine carbon (-100 mesh) is recoverable with froth flotation. There are 1.27M tons of carbon-free ash, 12% of which is coarse and potentially usable as block sand. Spiral concentration testing on bulk samples showed that product grade of 30 to 38% C (4200 to 5500 Btu/lb) was obtainable. When this product was cleaned again in an additional stage of spiral concentration, the product grade was improved to 7200 to 8200 Btu/lb with an accompanying 13 to 29% decrease in yield. Release analysis of hydraulically classified pond ash showed that froth flotation could provide froth products with as high a grade as 9000 Btu/lb with a yield of 5%. Increasing yield to 10% reduced froth grade to 7000 Btu/lb. Batch flotation provided froth grades as high as 6500 Btu/lb with yields of 7% with 1.5 lb/ton SPP and 1 lb/ton frother. Column flotation test results were similar to those achieved in batch flotation in terms of both grade and yield, however, carbon recoveries were lower (<70%). High airflow rate was required to achieve >50% carbon recovery and using wash water improved froth grade. Bottom ash samples were recovered from each of the units at Coleman Station. Characterization confirmed that sufficient quantity and quality of material is generated to produce a marketable lightweight aggregate and recover a high-grade fuel product. Spiral concentration provided acceptable grade lightweight aggregate with yields of only 10 to 20%. Incorporating a sieve bend into the process to recover coarse, porous ash particles from the outside race of the spirals increased aggregate yield to as high as 75%, however, the carbon content of the aggregate also increased. An opening size of 28 mesh on the sieve bend appeared to be sufficient. Lightweight concrete blocks (28 to 32 lbs) were produced from bottom ash and results show that acceptable strength could be attained with a cement/concrete ratio as low as 1/4. A mobile Proof-of-Concept (POC) field unit was designed and fabricated to meet the processing objectives of the project. The POC plant consisted of two trailer-mounted modules and was completely self sufficient with respect to power and water requirements. The POC unit was hauled to Coleman Station and operated at a feed rate of 2 tph. Results showed that the spirals operated similarly to previous pilot-scale operations and a 500 lb composite sample of coarse carbon was collected with a grade of 51.7% C or 7279 Btu/lb. Flotation results compared favorably with release analysis and 500 lbs of composite froth product was collected with a grade of 35% C or 4925 Btu/lb. The froth product was dewatered to 39% moisture with vacuum filtration. Pan pelletization and briquetting were evaluated as a means of minimizing handling concerns. Rotary pan pelletization produced uniform pellets with a compressive strength of 4 lbf without the use of any binder. Briquettes were produced by blending the coarse and fine carbon products at a ratio of 1:10, which is the proportion that the two products would be produced in a commercial operation. Using 3% lime as a binder produced the most desirable briquettes with respect to strength, attrition and drop testing. Additionally, the POC carbon products compared favorably with commercial activated carbon when used for removal of mercury from simulated flue gas. A business model was generated to summarize anti

J.G. Groppo; T.L. Robl

2005-09-30T23:59:59.000Z

440

EFFECTS OF FLY ASH ON MERCURY OXIDATION DURING POST COMBUSTION CONDITIONS  

SciTech Connect (OSTI)

Tests were performed in simulated flue gas streams using two fly ash samples from the electrostatic precipitators of two full-scale utility boilers. One fly ash was derived from a Powder River Basin (PRB) coal, while the other was derived from Blacksville coal (Pittsburgh No. 8 seam). The tests were performed at temperatures of 120 and 180 C under different gas compositions using whole fly ash samples as well as magnetic and nonmagnetic concentrates from sized fly ash. Only the Blacksville ash contained magnetic phases. The whole and fractionated fly ash samples were analyzed for morphology, chemical composition, mineralogical composition, total organic carbon, porosity, and surface area. Mineralogically, the Blacksville ash was composed predominantly of magnetite, hematite, quartz, and mullite, while the PRB ash contained mostly quartz with lesser amounts of lime, periclase, and calcium aluminum oxide. The iron oxides in the Blacksville ash were concentrated almost entirely in the largest size fraction. As anticipated, there was not a clean separation of magnetic (Fe-rich) and nonmagnetic (aluminosilicate-rich) phases for the Blacksville ash. The Blacksville ash had a significantly higher surface area and a much higher unburned carbon content than the PRB ash. Elemental mercury (Hg) streams were injected into the simulated flue gas and passed over filters (housed in a convection oven) loaded with fly ash. Concentrations of total, oxidized, and elemental Hg downstream from the ash samples were determined by the Ontario Hydro Method. The gas stream composition and whether or not ash was present in the gas stream were the two most important variables. Based on the statistical analyses, the presence of HCl, NO, NO{sub 2}, and SO{sub 2} and all two-way gas interactions were significant. In addition, it appears that even four-factor interactions between those gases are significant. The HCl, NO{sub 2}, and SO{sub 2} were critical gases resulting in Hg oxidation, while the presence of NO appeared to suppress oxidation. The Blacksville fly ash tended to show slightly more catalytic activity than the PRB fly ash, but this could be largely due to the higher surface area of the Blacksville ash. Temperature was not a statistically important factor. The magnetic (Fe-rich) phases did not appear to be more catalytically active than the nonmagnetic phases, and unburned carbon did not appear to play a critical role in oxidation chemistry.

Unknown

2000-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

E-Print Network 3.0 - ash transportation distance Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

University Collection: Geosciences 84 Study of composite cement containing burned oil shale Summary: is a sedimentary soil containing petroleum, that can be used as fuel,...

442

14 2010 Proceedings Symposium on Ash in North America GTR-NRS-P-72 SILVICS AND SILVICULTURE OF ASH IN MIXED HARDWOOD  

E-Print Network [OSTI]

IN MIXED HARDWOOD FORESTS OF THE SOUTHERN BOTTOMLANDS AND LOESSIAL HILLS Steve Meadows U.S. Forest Service wet bottomland sites. White ash is the primary ash species in the loessial hills and on other upland sites across the South. The natural range, distribution across site types, and associated forest cover

443

Blue Ash, Ohio: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Blue Ash, Ohio: Energy Resources Blue Ash, Ohio: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 39.2320029°, -84.3782734° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.2320029,"lon":-84.3782734,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

444

Utilization of Biomineralization Processes with Fly Ash for Carbon Sequestration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Utilization of Biomineralization Processes with Fly Ash Utilization of Biomineralization Processes with Fly Ash for Carbon Sequestration Y. Roh (rohy@ornl.gov; 865-576-9931) T. J. Phelps (phelpstj1@ornl.gov; 865-574-7290) Environmental Sciences Division, Oak Ridge National Laboratory*, Oak Ridge, TN 37831-6036 A. D. McMillan (mcmillanad@ornl.gov; 865-241-4554) R. J. Lauf (laufrj@ornl.gov; 865-574-5176) Metal and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6085 *Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract number DE-AC05-00OR22725 Introduction The Department of Energy (DOE) Energy Information Administration estimates atmospheric greenhouse gas releases may exceed 8 billion metric tons by the year 2010 heightening its international environmental concern. Carbon dioxide will dominate the

445

Recovery Act Workers Complete Environmental Cleanup of Coal Ash Basin  

Broader source: Energy.gov (indexed) [DOE]

Site (SRS) recently cleaned up a 17- Site (SRS) recently cleaned up a 17- acre basin containing coal ash residues from Cold War operations. The American Recovery and Reinvestment Act project was safely completed at a cost of $8.9 million, $2.9 million under budget. The manmade earthen basin received ash from the former R Area Pow- erhouse operations, which ended in 1964. The first of five reactors con- structed at SRS, the R Reactor produced nuclear materials for national defense. Recovery Act funding allowed SRS to accelerate cleanup of the basin and complete the project five years earlier than the target set in a regu- latory schedule. In late 2010, the U.S. Environmental Protection Agency and South Carolina Department of Health and Environmental Control determined the closure met all regulatory requirements after inspection

446

Limestone and Ash Storage Silos and Lime Preparation Equipment, Part  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Limestone and Ash Storage Silos and Lime Preparation Equipment, Part Limestone and Ash Storage Silos and Lime Preparation Equipment, Part of the System to Inject Limestone Sorbent for SO, Control. Nucla, CO Nucla...continued Before being repowered, the plant consisted of three 12 MWe coal stoker- fired units built in 1959, which were taken out of service in 1984 due to low efficiency and high fuel cost. Antici- pating a need for additional power in the early 1990s. and after review of many power generation alternatives, CUEA started constmction of the re- powered Nucla CFB plant in Novem- ber 1984 and completed the project in May 1987. The original boilers were replaced with a new Fympower Corp. CFB bailer, a new high pressure 74 MWe steam turbine generator was installed, the three original 12 MWe steam turbines were

447

Ultrasonic ash/pyrite liberation. Final technical report  

SciTech Connect (OSTI)

The objective of this project was to develop a coal preparation concept which employed ultrasonics to precondition coal prior to conventional or advanced physical beneficiation processes such that ash and pyrite separation were enhanced with improved combustible recovery. Research activities involved a series of experiments that subjected three different test coals, Illinois No. 6, Pittsburgh No. 8, and Upper Freeport, ground to three different size fractions (28 mesh {times} 0, 200 mesh {times} 0, and 325 mesh {times} 0), to a fixed (20 kHz) frequency ultrasonic signal prior to processing by conventional and microbubble flotation. The samples were also processed by conventional and microbubble flotation without ultrasonic pretreatment to establish baseline conditions. Product ash, sulfur and combustible recovery data were determined for both beneficiation processes.

Yungman, B.A.; Buban, K.S.; Stotts, W.F.

1990-06-01T23:59:59.000Z

448

Ash reduction in clean coal spiral product circuits  

SciTech Connect (OSTI)

The article describes the Derrick Corporation's Stack Sizer{trademark} technology for high capacity fine wet cleaning with long-lasting high open-area urethane screen panels. After field trials, a Stack Sizer fitted with a 100-micron urethane panel is currently processing approximately 40 stph of clean coal spiral product having about 20% ash at McCoy-Elkhorn's Bevin Branch coal preparation plant in Kentucky, USA. Product yield is about 32.5 short tons per hour with 10% ash. The material is then fed to screen bowl centrifuges for further processing. At Blue Diamond Coal's Leatherwood preparation plant similar Stacker Sizers are achieving the same results. 2 figs., 3 tabs., 2 photo.

Brodzik, P.

2007-04-15T23:59:59.000Z

449

Microsoft Word - CX-Ashe-CGSFiberInstallation_WEB.doc  

Broader source: Energy.gov (indexed) [DOE]

5, 2011 5, 2011 REPLY TO ATTN OF: KEP-4 SUBJECT: Environmental Clearance Memorandum Debbie Ruckwardt Electrical Engineer - TEP-CSB-1 Proposed Action: Installing fiber optic cables between Bonneville Power Administration's (BPA) Ashe Substation and Energy Northwest's Columbia Generating Station (CGS). Budget Information: Work Order # 00261540 PP&A Project No.: PP&A 1864 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B1.3, Routine maintenance activities...for structures, rights of way, infrastructures such as roads, equipment... routine maintenance activities, corrective....are required to maintain...infrastructures...in a condition suitable for a facility to be used for its designed purpose. Location: The project takes place between BPA's Ashe Substation and Energy Northwest's

450

Ash Fork, Arizona: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Ash Fork, Arizona: Energy Resources Ash Fork, Arizona: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 35.2250114°, -112.4840675° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.2250114,"lon":-112.4840675,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

451

Differences in gasification behaviors and related properties between entrained gasifier fly ash and coal char  

SciTech Connect (OSTI)

In the study, two fly ash samples from Texaco gasifiers were compared to coal char and the physical and chemical properties and reactivity of samples were investigated by scanning electron microscopy (SEM), SEM-energy-dispersive spectrometry (EDS), X-ray diffraction (XRD), N{sub 2} and CO{sub 2} adsorption method, and isothermal thermogravimetric analysis. The main results were obtained. The carbon content of gasified fly ashes exhibited 31-37%, which was less than the carbon content of 58-59% in the feed coal. The fly ashes exhibited higher Brunauer-Emmett-Teller (BET) surface area, richer meso- and micropores, more disordered carbon crystalline structure, and better CO{sub 2} gasification reactivity than coal char. Ashes in fly ashes occurred to agglomerate into larger spherical grains, while those in coal char do not agglomerate. The minerals in fly ashes, especial alkali and alkaline-earth metals, had a catalytic effect on gasification reactivity of fly ash carbon. In the low-temperature range, the gasification process of fly ashes is mainly in chemical control, while in the high-temperature range, it is mainly in gas diffusion control, which was similar to coal char. In addition, the carbon in fly ashes was partially gasified and activated by water vapor and exhibited higher BET surface area and better gasification activity. Consequently, the fact that these carbons in fly ashes from entrained flow gasifiers are reclaimed and reused will be considered to be feasible. 15 refs., 7 figs., 5 tabs.

Jing Gu; Shiyong Wu; Youqing Wu; Ye Li; Jinsheng Gao [East China University of Science and Technology, Shanghai (China). Department of Chemical Engineering for Energy Resources and Key Laboratory of Coal Gasification of Ministry of Education

2008-11-15T23:59:59.000Z

452

Construction of an embankment with a fly and bottom ash mixture: field performance study  

SciTech Connect (OSTI)

Fly ash and bottom ash are coal combustion by-products (CCBPs) that are generated in large quantities throughout the world. It is often economical to dispose ash as mixtures rather than separately; that notwithstanding, only a few studies have been performed to investigate the behavior of fly and bottom ash mixtures, particularly those with high contents of fly ash. Also, there is very limited data available in the literature on the field performance of structures constructed using ash mixtures. This paper describes the construction and the instrumentation of a demonstration embankment built with an ash mixture (60:40 by weight of fly ash:bottom ash) on State Road 641, Terre Haute, Ind. Monitoring of the demonstration embankment was conducted for a period of 1 year from the start of construction of the embankment. The settlement of the embankment stabilized approximately 5 months after the end of its construction. According to horizontal inclinometer readings, the differential settlement at the top of the embankment is about 5 mm. Results from field quality control tests performed during construction of the demonstration embankment and monitoring data from vertical and horizontal inclinometers and settlement plates indicate that the ash mixture investigated can be considered an acceptable embankment construction material.

Yoon, S.; Balunaini, U.; Yildirim, I.Z.; Prezzi, M.; Siddiki, N.Z. [Louisiana Transportation Research Center, Baton Rouge, LA (United States)

2009-06-15T23:59:59.000Z

453

Effects of pulverized coal fly-ash addition as a wet-end filler in papermaking  

SciTech Connect (OSTI)

This experimental study is based on the innovative idea of using pulverized coal fly ash as a wet-end filler in papermaking. This is the first evaluation of the possible use of fly ash in the paper industry. Coal-based thermal power plants throughout the world are generating fly ash as a solid waste product. The constituents of fly ash can be used effectively in papermaking. Fly ash has a wide variation in particle size, which ranges from a few micrometers to one hundred micrometers. Fly ash acts as an inert material in acidic, neutral, and alkaline papermaking processes. Its physical properties such as bulk density (800-980 kg/m{sup 3}), porosity (45%-57%), and surface area (0.138-2.3076 m{sup 2}/g) make it suitable for use as a paper filler. Fly ash obtained from thermal power plants using pulverized coal was fractionated by a vibratory-sieve stack. The fine fraction with a particle size below 38 micrometers was used to study its effect on the important mechanical-strength and optical properties of paper. The effects of fly-ash addition on these properties were compared with those of kaolin clay. Paper opacity was found to be much higher with fly ash as a filler, whereas brightness decreased as the filler percentage increased Mechanical strength properties of the paper samples with fly ash as filler were superior to those with kaolin clay.

Sinha, A.S.K. [SLIET, Longowal (India). Dept. of Chemical Technology

2008-09-15T23:59:59.000Z

454

Idaho Nuclear Technology and Engineering Center (INTEC) (formerly ICPP) ash reutilization study  

SciTech Connect (OSTI)

Since 1984, the coal-fired plant at the Idaho Nuclear Technology and Engineering Center (INTEC, formerly Idaho Chemical Processing Plant) has been generating fly ash at a rate of approximately 1,000 tons per year. This ash is hydrated and placed in an ash bury pit near the coal-fired plant. The existing ash bury pit will be full in less than 1 year at its present rate of use. A conceptual design to build a new ash bury pit was completed, and the new pit is estimated to cost $1.7 million. This report evaluates ash reutilization alternatives that propose to eliminate this waste stream and save the $1.7 million required to build a new pit. The alternatives include using ash for landfill day cover, concrete admixture, flowable fill, soil stabilization, waste remediation, and carbon recovery technology. Both physical and chemical testing, under the guidance of the American Society for Testing and Materials, have been performed on ash from the existing pit and from different steps within the facility`s processes. The test results have been evaluated, compared to commercial ash, and are discussed as they relate to reutilization alternatives. This study recommends that the ash be used in flowable fill concrete for Deactivation and Demolition work at the Idaho National Engineering and Environmental Laboratory.

Langenwalter, T.; Pettet, M.; Ochoa, R.; Jensen, S.

1998-05-01T23:59:59.000Z

455

Classification of carbon in Canadian fly ashes and their implications in the capture of mercury  

Science Journals Connector (OSTI)

Fly ashes produced from Canadian power plants using pulverized coal and fluidized bed combustors were examined for their carbon content to determine their ability to capture mercury. The feed coal used in these power plants were lignite, subbituminous, high and medium volatile bituminous, their blends, and also blends of coal with petroleum coke (Petcoke). The carbon and mercury content of the coals and fly ashes were determined using the ASTM standard method and by the cold vapour atomic absorption spectrometry method. The carbon content of the fly ash was concentrated by strong acid digestion using \\{HCl\\} and HF. The quantitative and qualitative analyses of the carbon concentrate were made by using a reflected light microscope. The results show that the carbon content of fly ash appears to be partially related to depositional environment during coalification and to the rank of the coal. The Hg captured by the fly ash depends on the rank and blend of the feed coals and the type of carbon in the fly ash. The isotropic vitrinitic char is mostly responsible for the capture of most Hg in fly ash. The inadvertent increase in carbon content due to the blending of coal with petroleum coke did not increase the amount Hg captured by the fly ash. The fly ash collected by the hot side electrostatic precipitator has a low Hg content and no relation between the Hg and carbon content of the ash was observed. These results indicate that the quantity of carbon in the fly ash alone does not determine the amount Hg captured. The types of carbon present (isotropic and anisotropic vitrinitic, isotropic inertinitic and anisotropic Petcoke), the halogen content, the types of fly ash control devices, and the temperatures of the fly ash control devices all play major roles in the capture of Hg.

Fariborz Goodarzi; James C. Hower

2008-01-01T23:59:59.000Z

456

Leaching characteristics of arsenic and selenium from coal fly ash: role of calcium  

SciTech Connect (OSTI)

Understanding the leaching behavior of arsenic (As) and selenium (Se) in coal fly ash is important in evaluating the potential environmental impact of coal fly ash. Batch experiments were employed to systematically investigate the leaching behavior of As and Se in two major types of coal fly ashes, bituminous coal ash and sub-bituminous coal ash, and to determine the underlying processes that control As and Se leaching. The effects of pH, solid/liquid (S/L) ratio, calcium addition, and leaching time on the release of As and Se were studied. Overall, bituminous coal ash leached significantly more As and Se than sub-bituminous coal ash, and Se was more readily leachable, in both absolute concentration and relative fraction, than As for both types of fly ashes. Adsorption/desorption played a major role on As and Se leaching from bituminous coal ashes. However, calcium precipitation played the most important role in reducing As and Se leaching from sub-bituminous coal ashes in the entire experimental pH range. The leaching of As and Se from bituminous coal ashes generally increased with increases in the S/L ratio and leaching time. However, for sub-bituminous coal ashes, the leaching of As was not detected under most experimental conditions, while the leaching of Se increased with increases in the S/L ratio and leaching time. As{sup V} and Se{sup IV} were found to be the major species in all ash leachates in this study. 46 refs., 7 figs., 1 tab.

Tian Wang; Jianmin Wang; Yulin Tang; Honglan Shi; Ken Ladwig [Missouri University of Science and Technology, Rolla, MO (United States). Department of Civil, Architectural, and Environmental Engineering, and Environmental Research Center (ERC)

2009-05-15T23:59:59.000Z

457

The reactions and ashes of thermonuclear explosions on neutron stars  

E-Print Network [OSTI]

This paper reports on the detailed rp-process reaction flow on an accreting neutron star and the resulting ashes of a type I X-ray burst. It is obtained by coupling a 298 isotope reaction network to a self-consistent one-dimensional model calculation with a constant accretion rate of dM/dt=1.0e17g/s (0.09 Eddington).

J. L. Fisker; E. Brown; M. Liebendoerfer; F. -K. Thielemann; M. Wiescher

2004-08-04T23:59:59.000Z

458

Effects of Sediment Containing Coal Ash from the Kingston Ash Release on Embryo-Larval Development in the Fathead Minnow, Pimephales promelas (Rafinesque, 1820)  

SciTech Connect (OSTI)

The largest environmental release of coal ash in U.S. history occurred in December 2008 with the failure of a retention structure at the Tennessee Valley Authority (TVA) Kingston Fossil Plant in East Tennessee. A byproduct of coal-burning power plants, coal ash is enriched in metals and metalloids such as selenium and arsenic with known toxicity to fish including embryonic and larval stages. The effects of contact exposure to sediments containing up to 78 % coal ash from the Kingston spill on the early development of fish embryos and larvae were examined in 7-day laboratory tests with the fathead minnow (Pimephales promelas). No significant effects were observed on hatching success, incidences of gross developmental abnormalities, or embryo-larval survival. Results suggest that direct exposures to sediment containing residual coal ash from the Kingston ash release may not present significant risks to fish eggs and larvae in waterways affected by the spill.

Greeley Jr, Mark Stephen [ORNL] [ORNL; Elmore, Logan R [ORNL] [ORNL; McCracken, Kitty [ORNL] [ORNL; Sherrard, Rick [Tennessee Valley Authority (TVA)] [Tennessee Valley Authority (TVA)

2014-01-01T23:59:59.000Z

459

Modelling fly ash generation for UK power station coals  

SciTech Connect (OSTI)

An in-depth characterization has been made of three UK bituminous coals and the combustion products from these coals when burned at a power station and on a range of experimental combustion facilities. The coals were chosen to represent the range of ash compositions and slagging propensities found at UK power stations. CCSEM analysis of the pulverized coals has been performed to provide quantitative data on the size and chemical composition of individual mineral occurrences, and to determine the nature of the mineral-mineral and mineral-organic associations in the pulverized fuel. In a similar way the size and chemical composition of individual fly ash particle has been determined. The mineral-mineral association information has been used to predict the effects of mineral coalescence, the dominant mineral transformation process for UK power station coals. The CCSEM information correctly identifies the types of mineral-mineral association and hence the predicted effects of coalescence. The limitations of the information are inherent in the analysis of a cross-section, but useful information for the modelling of ash generation may still be obtained.

Wigley, F.; Williamson, J. [Imperial Coll., London (United Kingdom). Dept. of Materials

1996-12-31T23:59:59.000Z

460

Oil shale ash-layer thickness and char combustion kinetics  

SciTech Connect (OSTI)

A Hot-Recycled-Solids (HRS) oil shale retort is being studied at Lawrence Livermore National Laboratory. In the HRS process, raw shale is heated by mixing it with burnt retorted shale. Retorted shale is oil shale which has been heated in an oxygen deficient atmosphere to pyrolyze organic carbon, as kerogen into oil, gas, and a nonvolatile carbon rich residue, char. In the HRS retort process, the char in the spent shale is subsequently exposed to an oxygen environment. Some of the char, starting on the outer surface of the shale particle, is burned, liberating heat. In the HRS retort, the endothermic pyrolysis step is supported by heat from the exothermic char combustion step. The rate of char combustion is controlled by three resistances; the resistance of oxygen mass transfer through the gas film surrounding the solid particle, resistance to mass transfer through a ash layer which forms on the outside of the solid particles as the char is oxidized and the resistance due to the intrinsic chemical reaction rate of char and oxygen. In order to estimate the rate of combustion of the char in a typical oil shale particle, each of these resistances must be accurately estimated. We begin by modeling the influence of ash layer thickness on the over all combustion rate of oil shale char. We then present our experimental measurements of the ash layer thickness of oil shale which has been processed in the HRS retort.

Aldis, D.F.; Singleton, M.F.; Watkins, B.E.; Thorsness, C.B.; Cena, R.J.

1992-04-15T23:59:59.000Z

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Superheater Tube Corrosion in Wood Gasifier Ash Deposits  

SciTech Connect (OSTI)

The upper operating temperature of tubes in heat exchangers/steam generators is strongly influenced by the degradation that can occur because of the reaction of the exchanger/generator tubing with the deposits that accumulate on the surface of the tubes. In fact, severe corrosion has been observed in some biomass fired systems, particularly with elevated potassium and chlorine concentrations in the deposits. Wood gasifiers have recently been and are currently being constructed at several sites in North America. In these systems, the syngas is burned to produce steam and the performance of the heat exchanger tubes under ash deposits is of great concern. As temperatures of the heat exchangers are increased in an effort to increase their operating efficiency, the performance of the tubes is of greater interest. The corrosion behavior of alloy steel tubes as a function of temperature has been investigated by exposing samples of selected alloys to ash collected from the steam generator fired by syngas produced in wood gasifiers. This study compares corrosion rates from laboratory exposures of synthesis gas and ash at 500 C and 600 C. This study investigated the material performance of four ferritic steels and one austenitic steel exposed to conditions expected on the fireside of a wood gasifier. The purpose of this study was to identify an effective method for determining material performance for samples exposed to both the process gas and the fly ash that is typically observed within the steam generator for times up to 1000 hours. Mass changes were measured for all of the samples, but this information can be misleading concerning material performance due to the difficulty in sufficiently cleaning the samples after exposure in the ash. Therefore, small cross sections of the samples were collected and imaged using optical microscopy. Oxide thicknesses were measured along with metal losses. The metal loss information provides a clear indication of material performance. The metal loss rates for the ferritic steels at 500 C were almost half of those observed at 600 C and the rates decreased with increasing exposure time. It was also reported that the metal loss rates generally decrease with increasing chromium concentration.

Bestor, Michael A [ORNL] [ORNL; Keiser, James R [ORNL] [ORNL; Meisner, Roberta A [University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL)] [University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL)

2011-01-01T23:59:59.000Z

462

Energy Efficiency Improvement and Cost Saving Opportunities for Cement Making. An ENERGY STAR Guide for Energy and Plant Managers  

E-Print Network [OSTI]

B. , 1990. “Utilisation of Waste Heat from the Cement RotaryAdvanced Concepts of Waste Heat Recovery in Cement Plants”a roller mill. Utilizing waste heat from the kiln exhaust,

Worrell, Ernst

2008-01-01T23:59:59.000Z

463

Recovery Act Workers Accomplish Cleanup of Second Cold War Coal Ash Basin |  

Broader source: Energy.gov (indexed) [DOE]

Accomplish Cleanup of Second Cold War Coal Ash Accomplish Cleanup of Second Cold War Coal Ash Basin Recovery Act Workers Accomplish Cleanup of Second Cold War Coal Ash Basin American Recovery and Reinvestment Act workers recently cleaned up a second basin containing coal ash residues from Cold War operations at the Savannah River Site (SRS). About $24 million from the Recovery Act funded the environmental restoration project, allowing SRS to complete the project at least five years ahead of schedule. The work is part of a larger Recovery Act cleanup of the P Area scheduled for completion by the end of September 2011. Recovery Act Workers Accomplish Cleanup of Second Cold War Coal Ash Basin More Documents & Publications Recovery Act Workers Complete Environmental Cleanup of Coal Ash Basin Recovery Act Workers Add Time Capsule Before Sealing Reactor for Hundreds

464

Integrated production/use of ultra low-ash coal, premium liquids and clean char  

SciTech Connect (OSTI)

This integrated, multi-product approach for utilizing Illinois coal starts with the production of ultra low-ash coal and then converts it to high-vale, coal-derived, products. The ultra low-ash coal is produced by solubilizing coal in a phenolic solvent under ChemCoal{trademark} process conditions, separating the coal solution from insoluble ash, and then precipitating the clean coal by dilution of the solvent with methanol. Two major products, liquids and low-ash char, are then produced by mild gasification of the low-ash coal. The low ash-char is further upgraded to activated char, and/or an oxidized activated char which has catalytic properties. Characterization of products at each stage is part of this project.

Kruse, C.W.

1991-01-01T23:59:59.000Z

465

Mineralogical characterization of Sasol feed coals and corresponding gasification ash constituents  

SciTech Connect (OSTI)

Feed coal and coarse ash particles (heated rock fragments and clinkers), produced from Sasol-Lurgi gasifier tests under different operating conditions, have been characterized by quantitative X-ray diffraction, electron microprobe analysis, and associated chemical techniques, as a basis for better understanding of the relations between the mineralogical and physical properties of the ash particles. Crystalline phases in the ashes include quartz particles inherited directly from the feed coal, as well as anorthite, mullite, and diopside, derived from solid-state reactions or crystallization of a silicate melt during the gasification process. Glass, cooled from the melt, is also abundant in the ash materials. The abundance of large particles of hard minerals in the coal or the ash, such as quartz, anorthite, pyrite, and diopside, has been correlated with a laboratory-determined abrasion index and may contribute significantly to wear on mechanical equipment during coal- or ash-handling operations. 21 refs., 3 figs., 9 tabs.

Aivo B. Hlatshwayo; Ratale H. Matjie; Zhongsheng Li; Colin R. Ward [Sasol Technology (Proprietary) Limited, Sasolburg (South Africa)

2009-05-15T23:59:59.000Z

466

An Empirical Method for the Prediction of Coal Ash Slag Viscosity  

Science Journals Connector (OSTI)

An Empirical Method for the Prediction of Coal Ash Slag Viscosity ... Samples were prepared by ashing coals to completion at 815 °C; then a slag was generated under nitrogen at >1650 °C with the appropriate amount of reagent grade calcium carbonate (CaCO3) as flux added. ... (5)?Watt, J. D.; Fereday, F. The Flow Properties of Slags Formed from the Ashes of British Coals:? Part 1. Viscosity of Homogeneous Liquid Slags in Relation to Slag Composition. ...

G. J. Browning; G. W. Bryant; H. J. Hurst; J. A. Lucas; T. F. Wall

2003-04-16T23:59:59.000Z

467

A review of ash in conventional and advanced coal-based power systems  

SciTech Connect (OSTI)

Process conditions are briefly described for conventional and advanced power systems. The advanced systems include both combustion and gasification processes. We discuss problems in coal-based power generation systems, including deposition, agglomeration and sintering of bed materials, and ash attack are discussed. We also discuss methods of mitigating ash problems and anticipated changes anticipated in ash use by converting from conventional to advanced systems.

Holcombe, N.T.

1995-12-31T23:59:59.000Z

468

Z .Chemical Geology 152 1998 227256 The thermal and cementation histories of a sandstone petroleum  

E-Print Network [OSTI]

Z .Chemical Geology 152 1998 227­256 The thermal and cementation histories of a sandstone petroleum-feldspars recovered at various depths from a deep well drilled through a carbonate-cemented sandstone petroleum of a sandstone petroleum xreservoir, Elk Hills, California. Part 2: In situ oxygen and carbon isotopic results

469

Portland cement for SO.sub.2 control in coal-fired power plants  

DOE Patents [OSTI]

There is described a method of removing oxides of sulfur from the emissions of fossil fuel combustion by injecting portland cement into the boiler with the fuel, the combustion air, or downstream with the combustion gases. There is also described the cement products that result from this method.

Steinberg, Meyer (Melville, NY)

1985-01-01T23:59:59.000Z

470

Quartz cementation inhibited by crestal oil charge: Miller deep water sandstone,  

E-Print Network [OSTI]

Quartz cementation inhibited by crestal oil charge: Miller deep water sandstone, UK North Sea A. M (Received 15 June 1998; revised 11 February 1999) ABSTRACT: In the Miller Field, diagenetic quartz abundance: quartz cementation, Miller deep water sandstone, North Sea, diagenetic quartz. The Miller Field

Haszeldine, Stuart

471

Portland cement for SO/sub 2/ control in coal-fired power plants  

DOE Patents [OSTI]

A method is described for removing oxides of sulfur from the emissions of fossil fuel combustion by injecting portland cement into the boiler with the fuel, the combustion air, or downstream with the combustion gases. The cement products that result from this method is also described. 1 tab.

Steinberg, M.

1984-10-17T23:59:59.000Z

472

Carbon 39 (2001) 19952001 Silane-treated carbon fiber for reinforcing cement  

E-Print Network [OSTI]

Carbon 39 (2001) 1995­2001 Silane-treated carbon fiber for reinforcing cement *Yunsheng Xu, D-treated carbon fibers and silane-treated silica fume, relative to the values for cement paste with as-received carbon fibers and as-received silica fume. Silane treatment of fibers and silica fume contributed about

Chung, Deborah D.L.

473

Corrosion of Metals in Composite Cements Anthony Setiadi*, J. Hill and N. B. Milestone  

E-Print Network [OSTI]

wastes (ILW) in the UK. Cements are used because they are economic, durable and have long-term stability and assess whether the corrosion has any effects on cement durability over extended storage. Background Steel by carbonation. However, in waste encapsulation processes this is not the case as the grouts are enclosed

Sheffield, University of

474

Sr radionuclide in cement: An atomistic modeling study Mostafa Youssef a  

E-Print Network [OSTI]

: Available online xxxx Keywords: Molecular simulation Cement Nuclear waste storage Mechanical properties a b the interaction of each radionuclide with the cement matrix. Understanding on a fundamental level the long-term s t r a c t Cementitious materials are considered to be a waste form for the ultimate disposal

Yildiz, Bilge

475

Improved cement quality and grinding efficiency by means of closed mill circuit modeling  

E-Print Network [OSTI]

Grinding of clinker is the last and most energy-consuming stage of the cement manufacturing process, drawing on average 40% of the total energy required to produce one ton of cement. During this stage, the clinker particles are substantially reduced...

Mejeoumov, Gleb Gennadievich

2009-05-15T23:59:59.000Z

476

Thermal Energy Storage/Waste Heat Recovery Applications in the Cement Industry  

E-Print Network [OSTI]

, and the Portland Cement Association have studied the potential benefits of using waste heat recovery methods and thermal energy storage systems in the cement manufacturing process. This work was performed under DOE Contract No. EC-77-C-01-50S4. The study has been...

Beshore, D. G.; Jaeger, F. A.; Gartner, E. M.

1979-01-01T23:59:59.000Z

477

Transient Model for Behavior of Mercury in Portland Cement Kilns  

Science Journals Connector (OSTI)

(2) Bituminous coals (median value of 0.1 ?g/g) typically contain more mercury than petcoke (0.05 ?g/g median) or tires (0.04 ?g/g median), although the range of fuel mercury content is broad. ... Figure 2. Cumulative distribution of mercury in bituminous coal, petcoke, and tires fired at coal-fired power plants(2) and limestone input to cement kilns. ... The kiln used coal and petcoke as primary fuels, while tires were burned in the precalciner. ...

Constance Senior; Christopher J. Montgomery; Adel Sarofim

2009-12-14T23:59:59.000Z

478

Sulfur polymer cement for macroencapsulation of mixed waste debris  

SciTech Connect (OSTI)

In FY 1997, the US DOE Mixed Waste Focus Area (MWFA) sponsored a demonstration of the macroencapsulation of mixed waste debris using sulfur polymer cement (SPC). Two mixed wastes were tested--a D006 waste comprised of sheets of cadmium and a D008/D009 waste comprised of lead pipes and joints contaminated with mercury. The demonstration was successful in rendering these wastes compliant with Land Disposal Restrictions (LDR), thereby eliminating one Mixed Waste Inventory Report (MWIR) waste stream from the national inventory.

Mattus, C.H.

1998-06-01T23:59:59.000Z

479

E-Print Network 3.0 - ash upptag av Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Processing Conference Proceedings ASME 1994 MONTGOMERY COUNTY Summary: for cooling the condensate and auxiliary cooling water. Incombustible material and ash residue from the...

480

E-Print Network 3.0 - agglomerating ash process Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Engineering ; Materials Science 8 Assembly and Testing of an On-Farm Manure to Energy Conversion BMP for Animal Waste Pollution Control Summary: index for animal manure ash...

Note: This page contains sample records for the topic "ash grove cement" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.