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Note: This page contains sample records for the topic "aluminum alumina refining" from the National Library of EnergyBeta (NLEBeta).
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1

Experimental and Numerical Studies of Aluminum-Alumina Composites  

E-Print Network (OSTI)

The preliminary goal of this study is to determine the effects of processing conditions, compositions and microstructural morphologies of the constituents on the physical and thermo-mechanical properties of alumina (Al_2O_3) reinforced aluminum (Al...

Gudlur, Pradeep

2013-07-22T23:59:59.000Z

2

New Process for Grain Refinement of Aluminum. Final Report  

SciTech Connect

A new method of grain refining aluminum involving in-situ formation of boride nuclei in molten aluminum just prior to casting has been developed in the subject DOE program over the last thirty months by a team consisting of JDC, Inc., Alcoa Technical Center, GRAS, Inc., Touchstone Labs, and GKS Engineering Services. The Manufacturing process to make boron trichloride for grain refining is much simpler than preparing conventional grain refiners, with attendant environmental, capital, and energy savings. The manufacture of boride grain refining nuclei using the fy-Gem process avoids clusters, salt and oxide inclusions that cause quality problems in aluminum today.

Dr. Joseph A. Megy

2000-09-22T23:59:59.000Z

3

Alumina reduction by laser sustained plasma for aluminum-based renewable energy cycling  

Science Journals Connector (OSTI)

A novel alumina (Al 2O3) reduction technique for a renewable energy cycling system based on aluminum is proposed. Al 2O3 powder was fed into laser-sustained plasma and thermally dissociated. The produced Al was expanded to supersonic speeds through a nozzle. From the Al and argon line distributions in the flow direction it was found that Al remained in the dissociated state. A water-cooled copper tube was inserted in the flow to collect Al. X-ray analysis indicated that elemental Al was observed on the surface of the tube. The maximum value of the estimated reduction efficiency was 5%.

Kimiya Komurasaki

2013-01-01T23:59:59.000Z

4

Influence of Alloy and Solidification Parameters on Grain Refinement in Aluminum Weld Metal due to Inoculation  

SciTech Connect

The goals are: (1) Establish how much Ti/B grain refiner is need to completely refine aluminum weld metal for different alloys and different welding conditions; (2) Characterize how alloy composition and solidification parameters affect weld metal grain refinement; and (3) Apply relevant theory to understand observed behavior. Conclusions are: (1) additions of Ti/B grain refiner to weld metal in Alloys 1050, 5083, and 6082 resulted in significant grain refinement; (2) grain refinement was more effective in GTAW than LBW, resulting in finer grains at lower Ti content - reason is limited time available for equiaxed grain growth in LBW (inability to occlude columnar grain growth); (3) welding travel speed did not markedly affect grain size within GTAW and LBW clusters; and (4) application of Hunt CET analysis showed experimental G to be on the order of the critical G{sub CET}; G{sub CET} was consistently higher for GTAW than for LBW.

Schempp, Philipp [BAM, Germany; Tang, Z. [BIAS, Germany; Cross, Carl E. [Los Alamos National Laboratory; Seefeld, T. [BIAS, Germany; Pittner, A. [BAM, Germany; Rethmeier, M. [BAM, Germany

2012-06-28T23:59:59.000Z

5

Processing and microstructural evolution of alumina/aluminum alloy and aluminum nitride/aluminum alloy composites by directed melt oxidation. Ph.D. Thesis  

SciTech Connect

An experimental investigation on the directed oxidation of aluminum-zinc alloys to produce alumina/aluminum alloy composites with and without alumina preforms has been conducted. It has been suggested in the literature that Al-Mg alloys grow composites by the dissolution of a magnesia surface layer and reprecipitation of alumina in the composite. The intent of this investigation is to reveal relevant distinctions in the proposed dissolution-reprecipitation process as they apply to a more commercially interesting Zn containing alloy with a reinforcing preform. The TGA behavior and microstructural observations on the oxidation of Al-10Zn-8Si alloys were coupled with a thermodynamic and kinetic analysis to develop a composite growth model. Experiments were carried out in air at 1000-1200 C. At the higher temperatures (greater than 1100 C), Al2O3/Al composites grow by dissolving a ZnAl2O4 (spinel) surface layer. The dissolution process releases oxygen that reprecipitates in the form of Al2O3 on the existing composite, and also releases Zn and Al which migrate upward through the spinel to regenerate the surface oxide. Composite growth may only occur when the surface regenerates at a rate comparable with that of the dissolution process. At the lower temperatures, 1000 C, the composite growth is limited by the spinel regeneration process, and becomes intermittent. The addition of Mg to this alloy allows normal composite growth by the dissolution of a surface (Zn,Mg)Al2O4 layer at the lower temperatures, 980-1060 C, but leads to heterogeneous microstructures with voids as the temperature increases above approximately 1060 C. The directed oxidation of an Al-Zn alloy into porous alumina preforms yields an Al2O3/Al composite matrix which fills the preform interstices. Al-10Zn-8Si-0.25Mg alloys that are oxidized from 960-1100 C, and Al-10Zn-8Si alloys that are oxidized at 800-1000 C climb up the preform particle.

Crudele, S.D.

1994-12-31T23:59:59.000Z

6

Process of aluminum dross recycling and life cycle assessment for Al-Si alloys and brown fused alumina  

Science Journals Connector (OSTI)

In 2008, around 596?000 t of aluminum dross was generated from secondary aluminum industry in China; however, it was not sufficiently recycled yet. Approximately 95% of the Al dross was land filled without innocent treatment. The purpose of this work is to investigate Al dross recycling by environmentally efficient and friendly methods. Two methods of Al dross recycling which could utilize Al dross efficiently were presented. High-quality aluminum-silicon alloys and brown fused alumina (BFA) were produced successfully by recycling Al dross. Then, life cycle assessment (LCA) was performed to evaluate environmental impact of two methods of Al dross recycling process. The results show that the two methods are reasonable and the average recovery rate of Al dross is up to 98%. As the LCA results indicate, they have some advantages such as less natural resource consumption and pollutant emissions, which efficiently relieves the burden on the environment in electrolytic aluminum and secondary aluminum industry.

Jian-ping HONG; Jun WANG; Hai-yan CHEN; Bao-de SUN; Jia-jing LI; Chong CHEN

2010-01-01T23:59:59.000Z

7

Influence of Aluminum Content on Grain Refinement and Strength of AZ31 Magnesium GTA Weld Metal  

SciTech Connect

The goal is to characterize the effect of Al content on AZ31 weld metal, the grain size and strength, and examine role of Al on grain refinement. The approach is to systematically vary the aluminum content of AZ31 weld metal, Measure average grain size in weld metal, and Measure cross-weld tensile properties and hardness. Conclusions are that: (1) increased Al content in AZ31 weld metal results in grain refinement Reason: higher undercooling during solidification; (2) weld metal grain refinement resulted in increased strength & hardness Reason: grain boundary strengthening; and (3) weld metal strength can be raised to wrought base metal levels.

Babu, N. Kishore [Singapore Institute of Manufacturing Technology; Cross, Carl E. [Los Alamos National Laboratory

2012-06-28T23:59:59.000Z

8

Grain refinement using equal channel angular extrusion in bulk sections of copper 101 and aluminum alloys 3003 and 6061  

E-Print Network (OSTI)

GRAIN REFINEMENT USING EQUAL CHANNEL ANGULAR EXTRUSION IN BULK SECTIONS OF COPPER 101 AND ALUMINUM ALLOYS 3003 AND 6061 A Thesis by STEPHANE FERRASSE Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE May 1995 Major Subject: Mechanical Engineering GRAIN REFINEMENT USING EQUAL CHANNEL ANGULAR EXTRUSION IN BULK SECTIONS OF COPPER 101 AND ALUMINUM ALLOYS 3003 AND 6061 A Thesis by STEPHANE FERRASSE...

Ferrasse, Stephane

1995-01-01T23:59:59.000Z

9

Refinement of the Cast Microstructure of Hypereutectic Aluminum-Silicon Alloys with an Applied Electric Potential.  

E-Print Network (OSTI)

??Hypereutectic aluminum-silicon (Al-Si) alloys are widely used in the aerospace and automobile industries because of their low density, excellent wear and corrosion resistance, low coefficient… (more)

Plotkowski, Alexander Joseph

2012-01-01T23:59:59.000Z

10

Equal-channel angular pressing of commercial aluminum alloys: Grain refinement, thermal stability and tensile properties  

SciTech Connect

Using equal-channel angular (ECA) pressing at room temperature, the grain sizes of six different commercial aluminum-based alloys (1100, 2024, 3004, 5083, 6061, and 7075) were reduced to within the submicrometer range. These grains were reasonably stable up to annealing temperatures of {approximately} 200 C and the submicrometer grains were retained in the 2024 and 7075 alloys to annealing temperatures of 300 C. Tensile testing after ECA pressing through a single pass, equivalent to the introduction of a strain of {approximately}1, showed there is a significant increase in the values of the 0.2 pct proof stress and the ultimate tensile stress (UTS) for each alloy with a corresponding reduction in the elongations to failure. It is demonstrated that the magnitudes of these stresses scale with the square rot of the Mg content in each alloy. Similar values for the proof stresses and the UTS were attained at the same equivalent strains in samples subjected to cold rolling, but the elongations to failure were higher after ECA pressing to equivalent strains >1 because of the introduction of a very small grain size. Detailed results for the 1100 and 3004 alloys show good agreement with the standard Hall-Petch relationship.

Horita, Zenji; Fujinami, Takayoshi; Nemoto, Minoru; Langdon, T.G.

2000-03-01T23:59:59.000Z

11

Physical chemistry of carbothermic reduction of alumina  

SciTech Connect

Production of aluminium, by means of carbothermic reduction of alumina, is discussed. By employing a solvent metal bath to absorb the alumina metal, carbothermic reduction of alumina was accomplished at temperatures 300/degree/C lower than the temperatures reported in the literature. Reduction occurred without the formation of intermediate compounds and without the high volatilization of aluminum bearing species. Reduction of alumina immersed in a solvent bath appeared to be rate limited by chemical reaction control. The rates seemed to be a function of the activity of aluminum in the solvent metal bath. Reduction of alumina particles, above the surface of the bath, seemed to occur via vapor transport with carbon in the particles or in the crucible walls. Mass transport in the gas phase appeared to be rate limiting. The rates seemed to be a function of the distance separating the alumina and carbon sources. With both submerged alumina and alumina particles, increasing the surface area of the alumina increased the rate of reduction. 58 refs., 65 figs., 9 tabs.

Frank, Robert A.

1985-09-01T23:59:59.000Z

12

MODELING OF ALUMINUM NANOPARTICLE FORMATION R. Schefflan  

E-Print Network (OSTI)

MODELING OF ALUMINUM NANOPARTICLE FORMATION R. Schefflan D. Kalyon S. Kovenklioglu Stevens Picatinny Arsenal's process for making alumina coated nanoparticles of aluminum involves the conversion of gaseous aluminum, in the presence of helium carrier gas, to solid nanoparticles and their subsequent

13

Responsiveness of electric resistance of polymer-grafted carbon black/alumina gel composite against solvent vapor and solute in solution  

Science Journals Connector (OSTI)

The carbon black/alumina gel composites were prepared by sol-gel reaction of aluminum isopropoxide in the presence of polymer-grafted carbon black. The electric resistance of the alumina gel composite from polyme...

Norio Tsubokawa; Junya Inaba; Katsunori Arai; Kazuhiro Fujiki

2000-04-01T23:59:59.000Z

14

Al/Al2O3 Composite Coating Deposited by Flame Spraying for Marine Applications: Alumina Skeleton Enhances Anti-Corrosion and Wear Performances  

Science Journals Connector (OSTI)

Here we report aluminum-alumina composite coatings fabricated by flame spraying for potential marine applications against both corrosion and wear. Microstructure examination suggested dense coating structures and...

Jing Huang; Yi Liu; Jianhui Yuan; Hua Li

2014-04-01T23:59:59.000Z

15

Effect of the strain-induced melt activation (SIMA) process on the tensile properties of a new developed super high strength aluminum alloy modified by Al-5Ti-1B grain refiner  

SciTech Connect

In this study, the effect of Al-5Ti-1B grain refiners and modified strain-induced melt activation process on an Al-Zn-Mg-Cu alloy was studied. The optimum level of Ti was found to be 0.1 wt.%. The specimens subjected to deformation ratio of 40% (at 300 Degree-Sign C) and various heat treatment times (10-40 min) and temperature (550-600 Degree-Sign C) regimes were characterized in this study. Reheating condition to obtain a fine globular microstructure was optimized. Microstructural examinations were conducted by optical and scanning electron microscopy coupled with an energy dispersive spectrometry. The optimum temperature and time in strain-induced melt activation process are 575 Degree-Sign C and 20 min, respectively. T6 heat treatment including quenching to room temperature and aging at 120 Degree-Sign C for 24 h was employed to reach to the maximum strength. Significant improvements in mechanical properties were obtained with the addition of grain refiner combined with T6 heat treatment. After the T6 heat treatment, the average tensile strength increased from 283 MPa to 587 and 332 MPa to 617 for samples refined with 2 wt.% Al-5Ti-1B before and after strain-induced melt activation process and extrusion process, respectively. Ultimate strength of Ti-refined specimens without SIMA process has a lower value than globular microstructure specimens after SIMA and extrusion process. - Highlights: Black-Right-Pointing-Pointer The effect of Al-5Ti-1B on the aluminum alloy produced by SIMA process was studied. Black-Right-Pointing-Pointer Al-5Ti-1B is an effective in reducing the grain and reagent fine microstructure. Black-Right-Pointing-Pointer Reheating condition to obtain a fine globular microstructure was optimized. Black-Right-Pointing-Pointer The optimum temperature and time in SIMA process are 575 Degree-Sign C and 20 min respectively. Black-Right-Pointing-Pointer UTS of globular structure specimens have a more value than Ti-refined specimens.

Haghparast, Amin [School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran (Iran, Islamic Republic of)] [School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran (Iran, Islamic Republic of); Nourimotlagh, Masoud [Young Researchers Club, Dareshahr Branch, Islamic Azad university (Iran, Islamic Republic of)] [Young Researchers Club, Dareshahr Branch, Islamic Azad university (Iran, Islamic Republic of); Alipour, Mohammad, E-mail: Alipourmo@ut.ac.ir [School of Metallurgy and Materials Engineering, University of Tehran, Tehran (Iran, Islamic Republic of)] [School of Metallurgy and Materials Engineering, University of Tehran, Tehran (Iran, Islamic Republic of)

2012-09-15T23:59:59.000Z

16

ITP Petroleum Refining: Technology Roadmap for the Petroleum...  

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

Technology Roadmap for the Petroleum Industry ITP Petroleum Refining: Technology Roadmap for the Petroleum Industry petroleumroadmap.pdf More Documents & Publications ITP Aluminum:...

17

Reuse of activated alumina  

SciTech Connect

Activated alumina is used as a trapping media to remove trace quantities of UF{sub 6} from process vent streams. The current uranium recovery method employs concentrated nitric acid which destroys the alumina pellets and forms a sludge which is a storage and disposal problem. A recently developed technique using a distilled water rinse followed by three dilute acid rinses removes on average 97% of the uranium, and leaves the pellets intact with crush strength and surface area values comparable with new material. Trapping tests confirm the effectiveness of the recycled alumina as UF{sub 6} trapping media.

Hobensack, J.E. [Martin Marietta Energy Systems, Inc., Piketon, OH (United States)

1991-12-31T23:59:59.000Z

18

Synthesis and textural evolution of alumina particles with mesoporous structures  

SciTech Connect

Alumina particles with mesostructures were synthesized through a chemical precipitation method by using different inorganic aluminum salts followed by a heterogeneous azeotropic distillation and calcination process. The obtained mesoporous {gamma}-alumina particles were systematically characterized by the X-ray diffraction, transmission electron microscopy and nitrogen adsorption-desorption measurement. Effects of the aluminum salt counter anion, pH value and the azeotropic distillation process on the structural or textural evolution of alumina particles were investigated. It is found that Cl{sup -} in the reaction solution can restrain the textural evolution of the resultant precipitates into two-dimensional crystallized pseudoboehmite lamellae during the heterogeneous azeotropic distillation, and then transformed into {gamma}-Al{sub 2}O{sub 3} particles with mesostructures after further calcination at 1173 K, whereas coexisting SO{sub 4}{sup 2-} can promote above morphology evolution and then transformed into {gamma}-Al{sub 2}O{sub 3} nanofibers after calcination at 1173 K. Moreover nearly all materials retain relatively high specific surface areas larger than 100 m{sup 2} g{sup -1} even after calcinations at 1173 K. - Graphical abstract: Co-existing Cl{sup -} is beneficial for the formation of {gamma}-alumina nanoparticles with mesostructures during the precipitation process. Interparticle and intraparticle mesopores can be derived from acidic solution and near neutral solution, respectively.

Liu Xun [College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072 (China); Peng Tianyou, E-mail: typeng@whu.edu.c [College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072 (China); Yao Jinchun; Lv Hongjin; Huang Cheng [College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072 (China)

2010-06-15T23:59:59.000Z

19

The wetting behavior of NiAl and NiPtAl on polycrystalline alumina  

SciTech Connect

In order to understand the beneficial effect of Pt on the adherence of thermally grown alumina scales, sessile drop experiments were performed to study the wetting of poly-crystalline alumina by nickel-aluminum alloys with or without platinum addition where the amount of Pt ranged from 2.4 to 10 at.%. Subsequent interfacial structure was evaluated using atomic force microscopy. Platinum addition enhances the wettability of NiAl alloys on alumina, reduces the oxide/alloy interface energy and increases the interfacial mass transport rates.

Saiz, Eduardo; Gauffier, Antoine; Saiz, Eduardo; Tomsia, Antoni P.; Hou, Peggy Y.

2007-07-01T23:59:59.000Z

20

Refiner Crude Oil Inputs  

NLE Websites -- All DOE Office Websites (Extended Search)

Day) Refiner Percent Operable Utilization Net Inputs (Refiner and Blender) of Motor Gasoline Blending Comp Net Inputs (Refiner and Blender) of RBOB Blending Components Net...

Note: This page contains sample records for the topic "aluminum alumina refining" 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

Method of winning aluminum metal from aluminous ore  

DOE Patents (OSTI)

Aluminous ore such as bauxite containing alumina is blended with coke or other suitable form of carbon and reacted with sulfur gas at an elevated temperature. For handling, the ore and coke can be extruded into conveniently sized pellets. The reaction with sulfur gas produces molten aluminum sulfide which is separated from residual solid reactants and impurities. The aluminum sulfide is further increased in temperature to cause its decomposition or sublimation, yielding aluminum subsulfide liquid (AlS) and sulfur gas that is recycled. The aluminum monosulfide is then cooled to below its disproportionation temperature to again form molten aluminum sulfide and aluminum metal. A liquid-liquid or liquid-solid separation, depending on the separation temperature, provides product aluminum and aluminum sulfide for recycle to the disproportionation step.

Loutfy, Raouf O. (Naperville, IL); Keller, Rudolf (Naperville, IL); Yao, Neng-Ping (Clarendon Hills, IL)

1981-01-01T23:59:59.000Z

22

Review Article Aluminum-Induced Entropy in Biological Systems  

E-Print Network (OSTI)

Review Article Aluminum-Induced Entropy in Biological Systems: Implications for Neurological years, mining, smelting, and refining of aluminum (Al) in various forms have increasingly exposed living of the Al toxicants to which we are being exposed. 1. Introduction Aluminum (Al) is the most common metal

Seneff, Stephanie

23

Peltier heats in cryolite melts with alumina  

SciTech Connect

The Seebeck coefficient was measured for cells with electrolytes of molten mixtures of sodium fluoride and aluminum fluoride saturated with alumina. The electrodes were either a pair of oxygen electrodes or a pair of aluminum electrodes. For the molar ratio NaF/AlF{sub 3} equal to 1.8, 1.2 and 1.0, the authors obtained the Seebeck coefficients {minus}1.80 mV K{sup {minus}1} at 971 C, {minus}1.63 mV K{sup {minus}1} at 813.6 C and {minus}0.583 mV K{sup {minus}1} at 758 C, respectively, for the oxygen electrodes. For the aluminum electrodes, the authors obtained the Seebeck coefficient {minus}1.23 mV K{sup {minus}1} at 962 C, for the molar ratio NaF/AlF{sub 3} equal to 1.8. The results suggest that there is a substantial reversible heat consumption at the anode during aluminum electrolysis and a large reversible heat production at the cathode. The highest temperature in the Hall-Heroult cell is then closer to the cathode than the anode. The transported entropies of Al{sup 3+} and O{sup 2{minus}} were calculated to be 77 J mol{sup {minus}1} K{sup {minus}1} and 10 J mol{sup {minus}1} K{sup {minus}1}, respectively, when the molar ratio NaF/AlF{sub 3} was equal to 1.0.

Flem, B.E.; Ratkje, S.K.; Sterten, A. [Univ. of Trondheim (Norway)

1996-10-01T23:59:59.000Z

24

Heat Treatment of Alumina Aerogels  

Science Journals Connector (OSTI)

Heat Treatment of Alumina Aerogels ... Recently, using supercritical drying, we have obtained alumina aerogel monoliths and films1,2with high porosity and special morphology, different from those of common aerogels films. ... One of the main questions concerning the application of these aerogels is their thermal stability. ...

Shani Keysar; Gennady E. Shter; * Yoram de Hazan; Yachin Cohen; Gideon S. Grader

1997-11-18T23:59:59.000Z

25

Tubular alumina formed by anodization in the meniscal region S. K. Lazarouk,1,a  

E-Print Network (OSTI)

Tubular alumina formed by anodization in the meniscal region S. K. Lazarouk,1,a D. A. Sasinovich,1 by anodization of aluminum at current densities up to 1400 mA/cm2 and anodization rates up to 70 m/min has been developed. It implies anodization in the meniscal region of the sample dipping into an electrolyte

26

Gelcasting Polycrystalline Alumina  

SciTech Connect

OSRAM SYLVANIA INC. is a major U.S. manufacturer of high-intensity lighting. Among its products is the Lumalux TM line of high-pressure sodium vapor arc lamps, which are used for industrial, highway, and street lighting. The key to the performance of these lamps is the polycrystalline alumina (PCA) tube that is used to contain the plasma that is formed in the electric arc. That plasma consists of ionized sodium, mercury, and xenon vapors. The key attributes of the PCA tubes are their transparency ({approximately}97% total transmittance in the visible), their refractoriness (inner wall temperature can reach l2OOC), and their chemical resistance (sodium and mercury vapor are extremely corrosive). The current efficiency of the lamps is very high, up to 100 initial lumens per watt. (Compare incandescent lamps 10-20 lumens per watt, fluorescent lamps 25-90 lumens per watt.)

Janney, M.A.; Zuk, K.J.; Wei, G.C.

2000-01-01T23:59:59.000Z

27

Carbothermal reduction of alumina: Thermochemical equilibrium calculations and experimental investigation  

Science Journals Connector (OSTI)

The production of aluminum by the electrolytic Hall–Héroult process suffers from high energy requirements, the release of perfluorocarbons, and vast greenhouse gas emissions. The alternative carbothermic reduction of alumina, while significantly less energy-intensive, is complicated by the formation of aluminum carbide and oxycarbides. In the present work, the formation of Al, as well as Al2OC, Al4O4C, and Al4C3 was proven by experiments on mixtures of Al2O3 and activated carbon in an Ar atmosphere submitted to heat pulses by an induction furnace. Thermochemical equilibrium calculations indicate that the Al2O3-reduction using carbon as reducing agent is favored in the presence of limited amounts of oxygen. The temperature threshold for the onset of aluminum production is lowered, the formation of Al4C3 is decreased, and the yield of aluminum is improved. Significant further enhancement in the carbothermic reduction of Al2O3 is predicted by using CH4 as the reducing agent, again in the presence of limited amounts of oxygen. In this case, an important by-product is syngas, with a H2/CO molar ratio of about 2, suitable for methanol or Fischer–Tropsch syntheses. Under appropriate temperature and stoichiometry of reactants, the process can be designed to be thermo-neutral. Using alumina, methane, and oxygen as reagents, the co-production of aluminum with syngas, to be converted to methanol, predicts fuel savings of about 68% and CO2 emission avoidance of about 91%, vis-à-vis the conventional production of Al by electrolysis and of methanol by steam reforming of CH4. When using carbon (such as coke or petcoke) as reducing agent, fuel savings of 66% and CO2 emission avoidance of 15% are predicted. Preliminary evaluation for the proposed process indicates favorable economics, and the required high temperatures process heat is readily attainable using concentrated solar energy.

M. Halmann; A. Frei; A. Steinfeld

2007-01-01T23:59:59.000Z

28

Method for thermal processing alumina-enriched spinel single crystals  

DOE Patents (OSTI)

A process for age-hardening alumina-rich magnesium aluminum spinel to obtain the desired combination of characteristics of hardness, clarity, flexural strength and toughness comprises selection of the time-temperature pair for isothermal heating followed by quenching. The time-temperature pair is selected from the region wherein the precipitate groups have the characteristics sought. The single crystal spinel is isothermally heated and will, if heated long enough pass from its single phase through two pre-precipitates and two metastable precipitates to a stable secondary phase precipitate within the spinel matrix. Quenching is done slowly at first to avoid thermal shock, then rapidly. 12 figs.

Jantzen, C.M.

1995-05-09T23:59:59.000Z

29

Decontamination and reuse of ORGDP aluminum scrap  

SciTech Connect

The Gaseous Diffusion Plants, or GDPs, have significant amounts of a number of metals, including nickel, aluminum, copper, and steel. Aluminum was used extensively throughout the GDPs because of its excellent strength to weight ratios and good resistance to corrosion by UF{sub 6}. This report is concerned with the recycle of aluminum stator and rotor blades from axial compressors. Most of the stator and rotor blades were made from 214-X aluminum casting alloy. Used compressor blades were contaminated with uranium both as a result of surface contamination and as an accumulation held in surface-connected voids inside of the blades. A variety of GDP studies were performed to evaluate the amounts of uranium retained in the blades; the volume, area, and location of voids in the blades; and connections between surface defects and voids. Based on experimental data on deposition, uranium content of the blades is 0.3%, or roughly 200 times the value expected from blade surface area. However, this value does correlate with estimated internal surface area and with lengthy deposition times. Based on a literature search, it appears that gaseous decontamination or melt refining using fluxes specific for uranium removal have the potential for removing internal contamination from aluminum blades. A melt refining process was used to recycle blades during the 1950s and 1960s. The process removed roughly one-third of the uranium from the blades. Blade cast from recycled aluminum appeared to perform as well as blades from virgin material. New melt refining and gaseous decontamination processes have been shown to provide substantially better decontamination of pure aluminum. If these techniques can be successfully adapted to treat aluminum 214-X alloy, internal and, possibly, external reuse of aluminum alloys may be possible.

Compere, A.L.; Griffith, W.L.; Hayden, H.W.; Wilson, D.F.

1996-12-01T23:59:59.000Z

30

Overview of Aluminum  

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

Aluminum Overview of Aluminum Overview of Aluminum Session Coordinator: Mark T. Smith Pacific Northwest National Laboratory VT Merit Review 2008 February 28, 2008 2 Overview of...

31

ITP Petroleum Refining: Energy Bandwidth for Petroleum Refining...  

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

Bandwidth for Petroleum Refining Processes ITP Petroleum Refining: Energy Bandwidth for Petroleum Refining Processes bandwidth.pdf More Documents & Publications ITP Petroleum...

32

ITP Petroleum Refining: Profile of the Petroleum Refining Industry...  

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

Profile of the Petroleum Refining Industry in California: California Industries of the Future Program ITP Petroleum Refining: Profile of the Petroleum Refining Industry in...

33

Laser Welding of Aluminum and Aluminum Alloys  

E-Print Network (OSTI)

.. ) Laser Welding of Aluminum and Aluminum Alloys Welds made with sharp bevel-groove weld aluminum and by aluminum alloy 5456 have been studied. The results indicate that initial absorption varies of the most dramatic illustrations of the differences in beam characteristics occurs when welding aluminum

Eagar, Thomas W.

34

MECS 2006- Petroleum Refining  

Energy.gov (U.S. Department of Energy (DOE))

Manufacturing Energy and Carbon Footprint for Petroleum Refining (NAICS 324110) Sector with Total Energy Input, October 2012 (MECS 2006)

35

Petroleum Refining | Department of Energy  

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

Petroleum Refining Petroleum Refining Maintaining the viability of the U.S. petroleum refining industry requires continuous improvement in productivity and energy efficiency. The...

36

Aluminum | Department of Energy  

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

Aluminum Aluminum U.S. aluminum producers recognize that energy efficiency offers a competitive edge in world markets. The aluminum industry has worked with AMO to develop a range...

37

Synthesizing aluminum particles towards controlling electrostatic discharge ignition sensitivity  

SciTech Connect

Aluminum particles were synthesized with shell thicknesses ranging from 2.7 to 8.3 nm and a constant diameter of 95 nm. These fuel particles were combined with molybdenum trioxide particles and the electrostatic discharge (ESD) sensitivity of the mixture was measured. Results show ignition delay increased as the alumina shell thickness increased. These results correlated with electrical resistivity measurements of the mixture which increased with alumina concentration. A model was developed using COMSOL for ignition of a single Al particle. The ignition delay in the model was consistent with the experimental results suggesting that the primary ESD ignition mechanism is joule heating.

Eric S. Collins; Jeffery P. Gesner; Michelle L. Pantoya; Michael A. Daniels

2014-02-01T23:59:59.000Z

38

Biocatalysis in Oil Refining  

SciTech Connect

Biocatalysis in Oil Refining focuses on petroleum refining bioprocesses, establishing a connection between science and technology. The micro organisms and biomolecules examined for biocatalytic purposes for oil refining processes are thoroughly detailed. Terminology used by biologists, chemists and engineers is brought into a common language, aiding the understanding of complex biological-chemical-engineering issues. Problems to be addressed by the future R&D activities and by new technologies are described and summarized in the last chapter.

Borole, Abhijeet P [ORNL; Ramirez-Corredores, M. M. [BP Global Fuels Technology

2007-01-01T23:59:59.000Z

39

Alumina forming iron base superalloy  

SciTech Connect

An austenitic stainless steel alloy, consists essentially of, in weight percent 2.5 to 4 Al; 25 to 35 Ni; 12 to 19 Cr; at least 1, up to 4 total of at least one element selected from the group consisting of Nb and Ta; 0.5 to 3 Ti; less than 0.5 V; 0.1 to 1 of at least on element selected from the group consisting of Zr and Hf; 0.03 to 0.2 C; 0.005 to 0.1 B; and base Fe. The weight percent Fe is greater than the weight percent Ni. The alloy forms an external continuous scale including alumina, and contains coherent precipitates of .gamma.'-Ni.sub.3Al, and a stable essentially single phase FCC austenitic matrix microstructure. The austenitic matrix is essentially delta-ferrite-free and essentially BCC-phase-free.

Yamamoto, Yukinori; Muralidharan, Govindarajan; Brady, Michael P.

2014-08-26T23:59:59.000Z

40

Hirshfeld atom refinement  

Science Journals Connector (OSTI)

The new automated iterative Hirshfeld atom refinement method is explained and validated through comparison of structural models of Gly-L-Ala obtained from synchrotron X-ray and neutron diffraction data at 12, 50, 150 and 295 K. Structural parameters involving hydrogen atoms are determined with comparable precision from both experiments and agree mostly to within two combined standard uncertainties.

Capelli, S.C.

2014-08-29T23:59:59.000Z

Note: This page contains sample records for the topic "aluminum alumina refining" 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

Lime–Alumina–Silica processing incorporating minerals  

Science Journals Connector (OSTI)

The use of naturally occurring minerals to enhance the physical and mechanical properties of industrial ceramics such as alumina is an attractive alternative to synthetic materials due to cost, chemical stability and availability. Two systems, have been chosen for investigation, alumina–kyanite to produce an alumina–mullite composite and alumina–wollastonite to produce a lime aluminosilicate. Wet processing conditions were optimised using pH/rheology and microelectrophoresis techniques followed by slip casting. The resulting green compacts were subjected to a variety of sintering regimes to produce the desired composites. Sintered products were characterised by techniques such as electron probe microanalysis, hardness tests and toughness determinations. Results are discussed, both in terms of enhanced properties realised (toughness, wear resistance, dielectric), and with respect to the viability of using natural minerals in this application.

R.H Bryden; D.G Goski; W.F Caley

1999-01-01T23:59:59.000Z

42

Issues in adaptive mesh refinement  

SciTech Connect

In this paper, we present an approach for a patch-based adaptive mesh refinement (AMR) for multi-physics simulations. The approach consists of clustering, symmetry preserving, mesh continuity, flux correction, communications, and management of patches. Among the special features of this patch-based AMR are symmetry preserving, efficiency of refinement, special implementation offlux correction, and patch management in parallel computing environments. Here, higher efficiency of refinement means less unnecessarily refined cells for a given set of cells to be refined. To demonstrate the capability of the AMR framework, hydrodynamics simulations with many levels of refinement are shown in both two- and three-dimensions.

Dai, William Wenlong [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

43

Petroleum Refining (2010 MECS) | Department of Energy  

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

Petroleum Refining (2010 MECS) Petroleum Refining (2010 MECS) Manufacturing Energy and Carbon Footprint for Petroleum Refining Sector (NAICS 324110) Energy use data source: 2010...

44

Sorbent selection and design considerations for uranium trapping. [H-151 alumina, XF-100 alumina, F-1 alumina, sodium fluoride  

SciTech Connect

The efficient removal of UF/sub 6/ from effluent streams can be accomplished through the selection of the best solid sorbent and the implementation of good design principles. Pressure losses, sorbent capacity, reaction kinetics, sorbent regeneration/uranium recovery requirements and the effects of other system components are the performance factors which are summarized. The commonly used uranium trapping materials highlighted are sodium fluoride, H-151 alumina, XF-100 alumina, and F-1 alumina. Sorbent selection and trap design have to be made on a case-by-case basis but the theoretical modeling studies and the evaluation of the performance factors presented can be used as a guide for other chemical trap applications.

Schultz, R.M.; Hobbs, W.E.; Norton, J.L.; Stephenson, M.J.

1981-07-01T23:59:59.000Z

45

Steel refining with an electrochemical cell  

DOE Patents (OSTI)

Apparatus for processing a metallic fluid containing iron oxide, container for a molten metal including an electrically conductive refractory disposed for contact with the molten metal which contains iron oxide, an electrolyte in the form of a basic slag on top of the molten metal, an electrode in the container in contact with the slag electrically separated from the refractory, and means for establishing a voltage across the refractory and the electrode to reduce iron oxide to iron at the surface of the refractory in contact with the iron oxide containing fluid. A process is disclosed for refining an iron product containing not more than about 10% by weight oxygen and not more than about 10% by weight sulfur, comprising providing an electrolyte of a slag containing one or more of calcium oxide, magnesium oxide, silica or alumina, providing a cathode of the iron product in contact with the electrolyte, providing an anode in contact with the electrolyte electrically separated from the cathode, and operating an electrochemical cell formed by the anode, the cathode and the electrolyte to separate oxygen or sulfur present in the iron product therefrom.

Blander, Milton (Palos Park, IL); Cook, Glenn M. (Naperville, IL)

1988-01-01T23:59:59.000Z

46

Minimally refined biomass fuel  

DOE Patents (OSTI)

A minimally refined fluid composition, suitable as a fuel mixture and derived from biomass material, is comprised of one or more water-soluble carbohydrates such as sucrose, one or more alcohols having less than four carbons, and water. The carbohydrate provides the fuel source; water solubilizes the carbohydrates; and the alcohol aids in the combustion of the carbohydrate and reduces the vicosity of the carbohydrate/water solution. Because less energy is required to obtain the carbohydrate from the raw biomass than alcohol, an overall energy savings is realized compared to fuels employing alcohol as the primary fuel.

Pearson, Richard K. (Pleasanton, CA); Hirschfeld, Tomas B. (Livermore, CA)

1984-01-01T23:59:59.000Z

47

Reactions of aluminum with uranium fluorides and oxyfluorides  

SciTech Connect

Every 30 to 40 million operating hours a destructive reaction is observed in one of the {approximately}4000 large compressors that move UF{sub 6} through the gaseous diffusion plants. Despite its infrequency, such a reaction can be costly in terms of equipment and time. Laboratory experiments reveal that the presence of moderate pressures of UF{sub 6} actually cools heated aluminum, although thermodynamic calculations indicate the potential for a 3000-4000{degrees}C temperature rise. Within a narrow and rather low (<100 torr; 1 torr = 133.322 Pa) pressure range, however, the aluminum is seen to react with sufficient heat release to soften an alumina boat. Three things must occur in order for aluminum to react vigorously with either UF{sub 6} or UO{sub 2}F{sub 2}. 1. An initiating source of heat must be provided. In the compressors, this source can be friction, permitted by disruption of the balance of the large rotating part or by creep of the aluminum during a high-temperature treatment. In the absence of this heat source, compressors have operated for 40 years in UF{sub 6} without significant reaction. 2. The film protecting the aluminum must be breached. Melting (of UF{sub 5} at 620 K or aluminum at 930 K) can cause such a breach in laboratory experiments. In contrast, holding Al samples in UF{sub 6} at 870 K for several hours produces only moderate reaction. Rubbing in the cascade can undoubtedly breach the protective film. 3. Reaction products must not build up and smother the reaction. While uranium products tend to dissolve or dissipate in molten aluminum, AIF{sub 3} shows a remarkable tendency to surround and hence protect even molten aluminum. Hence the initial temperature rise must be rapid and sufficient to move reactants into a temperature region in which products are removed from the reaction site.

Leitnaker, J.M.; Nichols, R.W.; Lankford, B.S. [Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)

1991-12-31T23:59:59.000Z

48

GRAIN REFINEMENT OF PERMANENT MOLD CAST COPPER BASE ALLOYS  

SciTech Connect

Grain refinement behavior of copper alloys cast in permanent molds was investigated. This is one of the least studied subjects in copper alloy castings. Grain refinement is not widely practiced for leaded copper alloys cast in sand molds. Aluminum bronzes and high strength yellow brasses, cast in sand and permanent molds, were usually fine grained due to the presence of more than 2% iron. Grain refinement of the most common permanent mold casting alloys, leaded yellow brass and its lead-free replacement EnviroBrass III, is not universally accepted due to the perceived problem of hard spots in finished castings and for the same reason these alloys contain very low amounts of iron. The yellow brasses and Cu-Si alloys are gaining popularity in North America due to their low lead content and amenability for permanent mold casting. These alloys are prone to hot tearing in permanent mold casting. Grain refinement is one of the solutions for reducing this problem. However, to use this technique it is necessary to understand the mechanism of grain refinement and other issues involved in the process. The following issues were studied during this three year project funded by the US Department of Energy and the copper casting industry: (1) Effect of alloying additions on the grain size of Cu-Zn alloys and their interaction with grain refiners; (2) Effect of two grain refining elements, boron and zirconium, on the grain size of four copper alloys, yellow brass, EnviroBrass II, silicon brass and silicon bronze and the duration of their effect (fading); (3) Prediction of grain refinement using cooling curve analysis and use of this method as an on-line quality control tool; (4) Hard spot formation in yellow brass and EnviroBrass due to grain refinement; (5) Corrosion resistance of the grain refined alloys; (6) Transfer the technology to permanent mold casting foundries; It was found that alloying elements such as tin and zinc do not change the grain size of Cu-Zn alloys. Aluminum promoted b phase formation and modified the grain structure from dendritic to equiaxed. Lead or bismuth reduces the size of grains, but not change the morphology of the structure in Cu-Zn alloys. The grain size of the Cu-Zn-alloy can be reduced from 3000 mm to 300 mm after the addition of aluminum and lead. Similar effects were observed in EnviroBrass III after the addition of aluminum and bismuth. Boron refined the structure of yellow brasses in the presence of iron. At least 50 ppm of iron and 3 ppm of boron are necessary to cause grain refinement in these alloys. Precipitation of iron from the melt is identified as the cause of grain refinement. Boron initiates the precipitation of iron which could not be explained at this time. On the other hand zirconium causes some reduction in grain size in all four alloys investigated. The critical limit for the zirconium was found to be around 100 ppm below which not much refinement could be observed. The mechanism of grain refinement in the presence of zirconium could not be explained. Grain refinement by boron and iron can remain over a long period of time, at least for 72 hours of holding or after remelting few times. It is necessary to have the iron and boron contents above the critical limits mentioned earlier. On the other hand, refinement by zirconium is lost quite rapidly, some times within one hour of holding, mostly due to the loss of zirconium, most probably by oxidation, from the melt. In all the cases it is possible to revive the refinement by adding more of the appropriate refining element. Cooling curve analysis (thermal analysis) can be used successfully to predict the grain refinement in yellow brasses. The precipitation of iron in the liquid metal causes the metal to solidify without undercooling. Absence of this reaction, as indicated by the time-temperature (t-T) and its first derivative (dt/dT) curves, proved to be an indicator of refinement. The viability of the technique as an on-line quality control tool was proved in two foundries. The method can also correctly predict the onset of fading. Th

M. SADAYAPPAN, J.P. THOMSON, M.ELBOUJDAINI, G. PING GU, M. SAHOO

2004-04-29T23:59:59.000Z

49

Weekly Refiner Net Production  

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

Refiner Net Production Refiner Net Production (Thousand Barrels per Day) Period: Weekly 4-Week Average Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes Product/Region 11/08/13 11/15/13 11/22/13 11/29/13 12/06/13 12/13/13 View History Finished Motor Gasoline 2,168 2,300 2,336 2,359 2,462 2,368 2010-2013 East Coast (PADD 1) 54 53 52 67 71 67 2010-2013 Midwest (PADD 2) 696 745 722 711 798 790 2010-2013 Gulf Coast (PADD 3) 891 916 1,010 1,053 1,011 1,021 2010-2013 Rocky Mountain (PADD 4) 260 248 245 232 279 235 2010-2013 West Coast (PADD 5) 268 338 308 296 302 255 2010-2013 Reformulated 50 49 49 49 48 49 2010-2013 Blended with Ethanol 50 49 49 49 48 49 2010-2013 Other

50

Climate VISION: Private Sector Initiatives: Aluminum: Resources...  

Office of Scientific and Technical Information (OSTI)

Industry Associations Aluminum Association The Aluminum Association, Inc. is the trade association for producers of primary aluminum, recyclers and semi-fabricated aluminum...

51

ITP Aluminum: Aluminum Industry Technology Roadmap  

Energy.gov (U.S. Department of Energy (DOE))

In 2002, the industry created this updated Aluminum Industry Technology Roadmap to define the specific research and development priorities, performance targets, and milestones required to achieve the set vision.

52

Low Temperature Reduction of Alumina Using Fluorine Containing Ionic Liquids  

SciTech Connect

The major objective of the project is to establish the feasibility of using specific ionic liquids capable of sustaining aluminum electrolysis near room temperature at laboratory and batch recirculation scales. It will explore new technologies for aluminum and other valuable metal extraction and process methods. The new technology will overcome many of the limitations associated with high temperatures processes such as high energy consumption and corrosion attack. Furthermore, ionic liquids are non-toxic and could be recycled after purification, thus minimizing extraction reagent losses and environmental pollutant emissions. Ionic liquids are mixture of inorganic and organic salts which are liquid at room temperature and have wide operational temperature range. During the last several years, they were emerging as novel electrolytes for extracting and refining of aluminum metals and/or alloys, which are otherwise impossible using aqueous media. The superior high temperature characteristics and high solvating capabilities of ionic liquids provide a unique solution to high temperature organic solvent problems associated with device internal pressure build-up, corrosion, and thermal stability. However their applications have not yet been fully implemented due to the insufficient understanding of the electrochemical mechanisms involved in processing of aluminum with ionic liquids. Laboratory aluminum electrodeposition in ionic liquids has been investigated in chloride and bis (trifluoromethylsulfonyl) imide based ionic liquids. The electrowinning process yielded current density in the range of 200-500 A/m2, and current efficiency of about 90%. The results indicated that high purity aluminum (>99.99%) can be obtained as cathodic deposits. Cyclic voltammetry and chronoamperometry studies have shown that initial stages of aluminum electrodeposition in ionic liquid electrolyte at 30°C was found to be quasi-reversible, with the charge transfer coefficient (0.40). Nucleation phenomena involved in aluminum deposition on copper in AlCl3-BMIMCl electrolyte was found to be instantaneous followed by diffusion controlled three-dimensional growth of nuclei. Diffusion coefficient (Do) of the electroactive species Al2Cl7¯ ion was in the range from 6.5 to 3.9×10–7 cm2?s–1 at a temperature of 30°C. Relatively little research efforts have been made toward the fundamental understanding and modeling of the species transport and transformation information involved in ionic liquid mixtures, which eventually could lead to quantification of electrochemical properties. Except that experimental work in this aspect usually is time consuming and expensive, certain characteristics of ionic liquids also made barriers for such analyses. Low vapor pressure and high viscosity make them not suitable for atomic absorption spectroscopic measurement. In addition, aluminum electrodeposition in ionic liquid electrolytes are considered to be governed by multi-component mass, heat and charge transport in laminar and turbulent flows that are often multi-phase due to the gas evolution at the electrodes. The kinetics of the electrochemical reactions is in general complex. Furthermore, the mass transfer boundary layer is about one order of magnitude smaller than the thermal and hydrodynamic boundary layer (Re=10,000). Other phenomena that frequently occur are side reactions and temperature or concentration driven natural convection. As a result of this complexity, quantitative knowledge of the local parameters (current densities, ion concentrations, electrical potential, temperature, etc.) is very difficult to obtain. This situation is a serious obstacle for improving the quality of products, efficiency of manufacturing and energy consumption. The gap between laboratory/batch scale processing with global process control and nanoscale deposit surface and materials specifications needs to be bridged. A breakthrough can only be realized if on each scale the occurring phenomena are understood and quantified. Multiscale numerical modeling nevertheless can help t

Dr. R. G. Reddy

2007-09-01T23:59:59.000Z

53

ITP Petroleum Refining: Energy Bandwidth for Petroleum Refining Processes  

Energy.gov (U.S. Department of Energy (DOE))

This energy bandwidth analysis provides a realistic estimate of the energy that may be saved in petroleum refining processes by quantifying measures of energy consumption.

54

ITP Petroleum Refining: Energy Bandwidth for Petroleum Refining...  

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

Refining Processes Prepared by Energetics Incorporated for the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Industrial Technologies Program...

55

Refines Efficiency Improvement  

SciTech Connect

Refinery processes that convert heavy oils to lighter distillate fuels require heating for distillation, hydrogen addition or carbon rejection (coking). Efficiency is limited by the formation of insoluble carbon-rich coke deposits. Heat exchangers and other refinery units must be shut down for mechanical coke removal, resulting in a significant loss of output and revenue. When a residuum is heated above the temperature at which pyrolysis occurs (340 C, 650 F), there is typically an induction period before coke formation begins (Magaril and Aksenova 1968, Wiehe 1993). To avoid fouling, refiners often stop heating a residuum before coke formation begins, using arbitrary criteria. In many cases, this heating is stopped sooner than need be, resulting in less than maximum product yield. Western Research Institute (WRI) has developed innovative Coking Index concepts (patent pending) which can be used for process control by refiners to heat residua to the threshold, but not beyond the point at which coke formation begins when petroleum residua materials are heated at pyrolysis temperatures (Schabron et al. 2001). The development of this universal predictor solves a long standing problem in petroleum refining. These Coking Indexes have great potential value in improving the efficiency of distillation processes. The Coking Indexes were found to apply to residua in a universal manner, and the theoretical basis for the indexes has been established (Schabron et al. 2001a, 2001b, 2001c). For the first time, a few simple measurements indicates how close undesired coke formation is on the coke formation induction time line. The Coking Indexes can lead to new process controls that can improve refinery distillation efficiency by several percentage points. Petroleum residua consist of an ordered continuum of solvated polar materials usually referred to as asphaltenes dispersed in a lower polarity solvent phase held together by intermediate polarity materials usually referred to as resins. The Coking Indexes focus on the amount of these intermediate polarity species since coke formation begins when these are depleted. Currently the Coking Indexes are determined by either titration or solubility measurements which must be performed in a laboratory. In the current work, various spectral, microscopic, and thermal techniques possibly leading to on-line analysis were explored for measuring the Coking Indexes.

WRI

2002-05-15T23:59:59.000Z

56

Refiner Wholesale Price ...........................  

Gasoline and Diesel Fuel Update (EIA)

Prices (cents per gallon) Prices (cents per gallon) Refiner Wholesale Price ........................... 297 299 302 275 289 290 288 262 275 289 280 257 293 282 276 Gasoline Regular Grade Retail Prices Including Taxes PADD 1 .................................................... 363 366 364 355 361 350 355 331 341 355 347 327 362 349 343 PADD 2 .................................................... 355 366 369 340 350 368 352 318 334 355 346 318 357 347 338 PADD 3 .................................................... 346 353 345 326 339 336 337 307 323 341 329 305 343 330 325 PADD 4 .................................................... 322 374 358 348 323 361 362 326 322 351 348 322 351 344 337 PADD 5 .................................................... 390 413 390 384 382 390 385 355 362 384 379 356 394 378 371 U.S. Average ........................................

57

Re-refining in India  

SciTech Connect

The Indian Institute of Petroleum, Dehra Dun made available its know-how for re-refining used engine oil to about 30 entrepreneurs. Out of these only a handful are utilizing their process. However, there are about 30 members in Petroleum Re-Refiners Association of India. After the certification scheme, as announced by the Ministry of Petroleum, is completed, a true picture would emerge as to the actual number of re-refiners engaged in the proper re-refining of used engine oil. The total consumption of lubricants in India is 500,000 tons of which about 5 percent maximum comes to the recognized re-refining industry and the balance is either burnt or discarded. The Government of India has been encouraging in particular the Government undertakings to set up their own captive units for re-refining but these have not been so successful and the output of captive units is used for topping up purpose. With the establishment of a re-refined engine oil specification and registration of the re-refiners it is hoped that the Government will take a more positive step in encouraging the re-refining industry.

Bhargava, M.K.

1980-11-01T23:59:59.000Z

58

Aluminum-Catalyzed Intramolecular Hydroamination of Aminoalkenes  

E-Print Network (OSTI)

Aluminum-catalyzed intramolecular hydroamination ofgroup 13 metals such as aluminum are exceedingly inexpensive

Koller, Juergen

2011-01-01T23:59:59.000Z

59

Aluminum: Reducing chloride emissions from aluminum production  

SciTech Connect

Reynolds Metals Company (RMC), with assistance from a NICE{sup 3} grant, is developing for commercialization a closed-loop control process that greatly reduces chlorine emissions and increases plant efficiency while maintaining metal quality. The process still utilizes chlorine to remove impurities during aluminum processing, but is more effective than current methods. With the new technology chlorine in the stack is monitored and input chlorine is adjusted continuously. This optimization of chlorine use results in substantially less waste because less chlorine has to be bought or produced by aluminum manufacturers. This innovation is a significant improvement over conventional aluminum treatments, in which chlorine is injected in a more costly and wasteful manner. By the year 2010, the new technology has the potential to reduce the energy it takes to create chlorine by 8.4 billion Btu per year and to cut greenhouse gas emissions by 1,377 tons per year.

Simon, P.

1999-09-29T23:59:59.000Z

60

Aluminum monocarbonyl and aluminum isocarbonyl Steve S. Wesolowski,a)  

E-Print Network (OSTI)

Aluminum monocarbonyl and aluminum isocarbonyl Steve S. Wesolowski,a) T. Daniel Crawford,b) Justin of the aluminum monocarbonyl species AlCO and AlOC have been performed to predict the geometries, fragmentation, Ogden, and Oswald6 first isolated aluminum dicarbonyls in solid krypton and identified the species

Crawford, T. Daniel

Note: This page contains sample records for the topic "aluminum alumina refining" 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

(Data in thousand metric tons of metal unless otherwise noted) Domestic Production and Use: In 2006, 5 companies operated 13 primary aluminum smelters; 6 smelters were  

E-Print Network (OSTI)

,800 South Africa 851 890 860 900 United Arab Emirates, Dubai 75%. Tariff: Item Number Normal Trade Relations 12-31-06 Unwrought (in coils) 7601.10.3000 2.6% ad val aluminum production decreased slightly owing to cutbacks attributed to increased energy and alumina costs

62

Refinement in Object-Z and CSP  

Science Journals Connector (OSTI)

In this paper we explore the relationship between refinement in Object-Z and refinement in CSP. We prove with a simple counter-example ... , does not imply failures-divergences refinement in CSP. This contradicts...

Christie Bolton; Jim Davies

2002-01-01T23:59:59.000Z

63

Anomalies in the refinement of isoleucine  

Science Journals Connector (OSTI)

The side-chain torsion angles of isoleucines in X-ray protein structures are a function of resolution, secondary structure and refinement software. Detailing the standard torsion angles used in refinement software can improve protein structure refinement.

Berntsen, K.R.M.

2014-03-19T23:59:59.000Z

64

Nucleic Acid Standards - Refinement Parameters  

NLE Websites -- All DOE Office Websites (Extended Search)

Refinement Parameters Refinement Parameters The DNA/RNA topology and parameter files for X-PLOR are shown below. These were tested with DNA structures and with protein-DNA complexes. X-PLOR topology file X-PLOR parameter files: X-PLOR parameter file For the refinement of high resolution structures (< 1.7 Angstroms) the parameter file with distinct bond distances and bond angles for both C2'-endo and C3'-endo conformations should be considered: X-PLOR parameter file for high resolution structures "New Parameters for the Refinement of Nucleic Acid Containing Structures." Gary Parkinson, Jaroslav Vojtechovsky, Lester Clowney, Axel Brunger*, and Helen M. Berman. (1996) Acta Cryst. D 52, 57-64 Rutgers University, Department of Chemistry, Piscataway, NJ 08855-0939; *The Howard Hughes Medical Institute and Departments of Molecular and

65

NORTHEAST REGIONAL REFINED PETROLEUM PRODUCT RESERVE | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

NORTHEAST REGIONAL REFINED PETROLEUM PRODUCT RESERVE NORTHEAST REGIONAL REFINED PETROLEUM PRODUCT RESERVE The Northeast region of the U.S. is particularly vulnerable to gasoline...

66

Improving the accuracy of macromolecular structure refinement  

NLE Websites -- All DOE Office Websites (Extended Search)

and subsequent refinement is challenging at low resolution. We compared refinement methods using synchrotron diffraction data of photosystem I at 7.4 resolution, starting...

67

Inertia-friction welding of particulate-reinforced aluminum matrix composites  

SciTech Connect

Aluminum metal-matrix composites (Al-MMC) are rapidly becoming materials of choice for many aerospace, automotive, recreational sports, and microelectronic applications. The attractive features of these materials include high specific strength and stiffness, a low coefficient of thermal expansion and enhanced wear characteristics relative to monolithic aluminum alloys. The effective engineering application of Al-MMC will commonly require their joining beth to themselves, to dissimilar Al-MMC, and to monolithic aluminum alloys. In the present work, dissimilar-alloy inertia-friction welds were produced between a 6061-T6 Al-MMC tube reinforced with l0 v/o Al{sub x}O{sub 3} particles (W6A.l0A-T6) and a modified A356 case MMC bar reinforced with 20 v/o SiC particles (F3S.20S), or a monolithic 6061-T6511 aluminum alloy bar. In Phase I, a fractional-factorial test matrix was statistically designed and performed to evaluate the effects of flywheel speed and axial pressure on the weld integrity, microstructure, hardness, tensile and torsion strengths and fracture behavior. In Phase 2, the effects of pre-weld machining of the solid bar on weld alignment and mechanical properties were evaluated. inertia-friction welding was shown to be effective for the joining of alumina particulate-reinforced composites to monolithic aluminum and to SiC-particulate reinforced aluminum. High-integrity joints exhibiting a defect-free joint interface with varying degrees of base alloy intermixing were produced at optimum parameter settings. Tensile and torsional strength joint efficiencies for the alumina-particulate MMC to monolithic aluminum alloy welds exceeded 80% and 75%, respectively, with tensile strength maximized with high axial pressure and flywheel speed, and torsional strength maximized at both medium and high levels of flywheel speed and axial pressure.

Cola, M.J.; Baeslack, W.A. III; Kou, M.

1994-12-31T23:59:59.000Z

68

Viscosity of aqueous and cyanate ester suspensions containing alumina nanoparticles.  

E-Print Network (OSTI)

??Concentrated aqueous alumina nanoparticle suspensions with additions of saccharides such as fructose, glucose, sucrose, and others were studied by rheometry and low temperature differential scanning… (more)

Lawler, Katherine Ann

2009-01-01T23:59:59.000Z

69

U.S. Energy Requirements for Aluminum Production | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ultrahigh-Efficiency Aluminum Production Cells ITP Aluminum: Aluminum Industry Technology Roadmap ITP Aluminum: Aluminum Industry Vision: Sustainable Solutions for a...

70

Final Technical Report Microwave Assisted Electrolyte Cell for Primary Aluminum Production  

SciTech Connect

This research addresses the high priority research need for developing inert anode and wetted cathode technology, as defined in the Aluminum Industry Technology Roadmap and Inert Anode Roadmap, with the performance targets: a) significantly reducing the energy intensity of aluminum production, b) ultimately eliminating anode-related CO2 emissions, and c) reducing aluminum production costs. This research intended to develop a new electrometallurgical extraction technology by introducing microwave irradiation into the current electrolytic cells for primary aluminum production. This technology aimed at accelerating the alumina electrolysis reduction rate and lowering the aluminum production temperature, coupled with the uses of nickel based superalloy inert anode, nickel based superalloy wetted cathode, and modified salt electrolyte. Michigan Technological University, collaborating with Cober Electronic and Century Aluminum, conducted bench-scale research for evaluation of this technology. This research included three sub-topics: a) fluoride microwave absorption; b) microwave assisted electrolytic cell design and fabrication; and c) aluminum electrowinning tests using the microwave assisted electrolytic cell. This research concludes that the typically used fluoride compound for aluminum electrowinning is not a good microwave absorbing material at room temperature. However, it becomes an excellent microwave absorbing material above 550°C. The electrowinning tests did not show benefit to introduce microwave irradiation into the electrolytic cell. The experiments revealed that the nickel-based superalloy is not suitable for use as a cathode material; although it wets with molten aluminum, it causes severe reaction with molten aluminum. In the anode experiments, the chosen superalloy did not meet corrosion resistance requirements. A nicked based alloy without iron content could be further investigated.

Xiaodi Huang; J.Y. Hwang

2007-04-18T23:59:59.000Z

71

E-Print Network 3.0 - alumina nanoparticles composites Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

the PMMA, followed... grown on the pat- terned alumina supports, and followed the alumina pattern. Silver nanoparticles were... Synthesis of silver-zeolite films on micropatterned...

72

E-Print Network 3.0 - alumina zirconia composite Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

the case of zirconia, the alumina-zirconia composites present five of the characteris- tic peaks... The presence of zirconia tetragonal phase stabilized by alumina can be...

73

DEFLECTION MEASUREMENTS OF 25 mm ALUMINUM COLLARS  

E-Print Network (OSTI)

MEASUREMENTS OF 25 mm ALUMINUM COLLARS· C. Peters LawrenceMEASUREMENTS OF 25 mm ALUMINUM COLLARS" C. Peters Lawrenceinch thick 7075- T6 aluminum alloy plate. Inside corners

Peters, C.

2010-01-01T23:59:59.000Z

74

DSm Vector Spaces of Refined Labels  

E-Print Network (OSTI)

In this book the authors introduce the notion of DSm vector spaces of refined labels. They also realize the refined labels as a plane and a n-dimensional space. Further, using these refined labels, several algebraic structures are defined. Finally DSm semivector space or refined labels is described. Authors also propose some research problems.

Kandasamy, W B Vasantha

2011-01-01T23:59:59.000Z

75

DSm Vector Spaces of Refined Labels  

E-Print Network (OSTI)

In this book the authors introduce the notion of DSm vector spaces of refined labels. They also realize the refined labels as a plane and a n-dimensional space. Further, using these refined labels, several algebraic structures are defined. Finally DSm semivector space or refined labels is described. Authors also propose some research problems.

W. B. Vasantha Kandasamy; Florentin Smarandache

2011-12-02T23:59:59.000Z

76

Conformal refinement of unstructured quadrilateral meshes  

SciTech Connect

We present a multilevel adaptive refinement technique for unstructured quadrilateral meshes in which the mesh is kept conformal at all times. This means that the refined mesh, like the original, is formed of only quadrilateral elements that intersect strictly along edges or at vertices, i.e., vertices of one quadrilateral element do not lie in an edge of another quadrilateral. Elements are refined using templates based on 1:3 refinement of edges. We demonstrate that by careful design of the refinement and coarsening strategy, we can maintain high quality elements in the refined mesh. We demonstrate the method on a number of examples with dynamically changing refinement regions.

Garmella, Rao [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

77

Electronic structure of superconductivity refined  

NLE Websites -- All DOE Office Websites (Extended Search)

Electronic structure of superconductivity refined Electronic structure of superconductivity refined Electronic structure of superconductivity refined A team of physicists propose a new model that expands on a little understood aspect of the electronic structure in high-temperature superconductors. July 10, 2008 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials.

78

Carbon Emissions: Petroleum Refining Industry  

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

Petroleum Refining Industry Petroleum Refining Industry Carbon Emissions in the Petroleum Refining Industry The Industry at a Glance, 1994 (SIC Code: 2911) Total Energy-Related Emissions: 79.9 million metric tons of carbon (MMTC) -- Pct. of All Manufacturers: 21.5% -- Nonfuel Emissions: 16.5 MMTC Total First Use of Energy: 6,263 trillion Btu -- Pct. of All Manufacturers: 28.9% Nonfuel Use of Energy Sources: 3,110 trillion Btu (49.7%) -- Naphthas and Other Oils: 1,328 trillion Btu -- Asphalt and Road Oil: 1,224 trillion Btu -- Lubricants: 416 trillion Btu Carbon Intensity: 12.75 MMTC per quadrillion Btu Energy Information Administration, "1994 Manufacturing Energy Consumption Survey", "Monthly Refinery Report" for 1994, and Emissions of Greenhouse Gases in the United States 1998.

79

Used oil re-refining  

SciTech Connect

Used oils, especially used lubricating oils which are normally considered waste and are discarded or burned, are reclaimed for reuse by a re-refining procedure involving the steps of: heat soaking the used oil; distilling the heat soaked oil; passing the distillate through a guard bed of activated material; hydrotreating the guard bed treated distillate under standard hydrotreating conditions. If the used oil to be re-refined contains a quantity of water and/or fuel fraction which the practioner considers sufficiently large to be detrimental, the used oil may be subjected to a dewatering/defueling step prior to being heat soaked.

Reid, L. E.; Ryan, D. G.; Yao, K. C.

1985-04-23T23:59:59.000Z

80

Vacuum State/Refiner/Location  

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

Vacuum Vacuum State/Refiner/Location Barrels per Atmospheric Crude Oil Distillation Capacity Barrels per Operating Idle Operating Idle Downstream Charge Capacity Thermal Cracking Delayed Fluid Coking Visbreaking Other/Gas Calendar Day Stream Day Distillation Coking Oil Table 3. Capacity of Operable Petroleum Refineries by State as of January 1, 2013 (Barrels per Stream Day, Except Where Noted) ......................................................... Alabama 120,100 0 130,000 0 48,000 32,000 0 0 0 Goodway Refining LLC 4,100 0 5,000 0 0 0 0 0 0 ....................................................................................................................................................................................................

Note: This page contains sample records for the topic "aluminum alumina refining" 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

Direct acid dissolution of aluminum and other metals from fly ash  

SciTech Connect

Fly ash could provide a significant domestic source of alumina and thus supply a large part of the US needs for aluminum and possibly also several other metals. The aluminum and other metals can be solubilized from fly ash by acid dissolution methods. The aluminum may be present in any or all of three solid phases: (1) crystalline; (2) glassy amorphous; and (3) irregular, spongy amorphous. The chemistry of these phases controls the solubilization behavior. The aluminum in high-calcium western ashes is primarily found in the amorphous phases, and much of it can be solubilized by using short-time, ambient-temperature leaching. Little of the aluminum in the low-calcium eastern ashes is solubilized under ambient-temperature conditions, and only a portion can be solubilized even at reflux temperature conditions. Some of the aluminum in these eastern ashes is present as mullite, while some is found in the amorphous material. The fraction contained in mullite is relativey acid insoluble, and only partial solubilization can be achieved even under vigorous acid leach conditions.

Kelmers, A.D.; Egan, B.Z.; Seeley, F.G.; Campbell, G.D.

1981-01-01T23:59:59.000Z

82

Regeneration of aluminum hydride  

DOE Patents (OSTI)

The present invention provides methods and materials for the formation of hydrogen storage alanes, AlH.sub.x, where x is greater than 0 and less than or equal to 6 at reduced H.sub.2 pressures and temperatures. The methods rely upon reduction of the change in free energy of the reaction between aluminum and molecular H.sub.2. The change in free energy is reduced by lowering the entropy change during the reaction by providing aluminum in a state of high entropy, by increasing the magnitude of the change in enthalpy of the reaction or combinations thereof.

Graetz, Jason Allan (Mastic, NY); Reilly, James J. (Bellport, NY)

2009-04-21T23:59:59.000Z

83

ITP Aluminum: Inert Anodes Roadmap  

Energy.gov (U.S. Department of Energy (DOE))

Aluminum is one of the most versatile materials available today that can meet the demanding requirements of tomorrow's products.

84

Aluminum battery alloys  

DOE Patents (OSTI)

Aluminum alloys suitable for use as anode structures in electrochemical cells are disclosed. These alloys include iron levels higher than previously felt possible, due to the presence of controlled amounts of manganese, with possible additions of magnesium and controlled amounts of gallium.

Thompson, D.S.; Scott, D.H.

1984-09-28T23:59:59.000Z

85

Aluminum battery alloys  

DOE Patents (OSTI)

Aluminum alloys suitable for use as anode structures in electrochemical cs are disclosed. These alloys include iron levels higher than previously felt possible, due to the presence of controlled amounts of manganese, with possible additions of magnesium and controlled amounts of gallium.

Thompson, David S. (Richmond, VA); Scott, Darwin H. (Mechanicsville, VA)

1985-01-01T23:59:59.000Z

86

Green Petroleum Refining - Mathematical Models for Optimizing Petroleum Refining Under Emission Constraints.  

E-Print Network (OSTI)

??Petroleum refining processes provide the daily requirements of energy for the global market. Each refining process produces wastes that have the capacity to harm the… (more)

Ali Yusuf, Yusuf

2013-01-01T23:59:59.000Z

87

An Improved Method To Strip Aluminum from Porous Anodic Alumina Films  

E-Print Network (OSTI)

(PAA) films with an ordered array of holes.2-7 The pore diameter distribution in such films is a function of the film preparation and is typically close to monodisperse. PAA realized.4-7 The applications of PAA films that have been explored include template growth of nanotubes

88

Fracture simulation for zirconia toughened alumina microstructure  

E-Print Network (OSTI)

Purpose - The purpose of this paper is to describe finite element modelling for fracture and fatigue behaviour of zirconia toughened alumina microstructures. Design/methodology/approach - A two-dimensional finite element model is developed with an actual $Al{_2}O{_3}$ - 10 vol% $ZrO{_2}$ microstructure. A bilinear, time-independent cohesive zone law is implemented for describing fracture behaviour of grain boundaries. Simulation conditions are similar to those found at contact between a head and a cup of hip prosthesis. Residual stresses arisen from the mismatch of thermal coefficient between grains are determined. Then, effects of a micro-void and contact stress magnitude are investigated with models containing residual stresses. For the purpose of simulating fatigue behaviour, cyclic loadings are applied to the models. Findings - Results show that crack density is gradually increased with increasing magnitude of contact stress or number of fatigue cycles. It is also identified that a micro-void brings about...

Kim, Kyungmok; Forest, Bernard

2013-01-01T23:59:59.000Z

89

ITP Aluminum: Energy and Environmental Profile of the U.S. Aluminum...  

Energy Savers (EERE)

Energy and Environmental Profile of the U.S. Aluminum Industry aluminum.pdf More Documents & Publications ITP Aluminum: Technical Working Group on Inert Anode Technologies...

90

Differences of growth response to aluminum excess of two Melaleuca trees differing in aluminum resistance  

E-Print Network (OSTI)

M, Yamanoshita T, Kojima K. , Role of aluminum-bindingligands in aluminum resistance of Eucalyptus camaldulensissoils, low pH and excess aluminum are the primary factors

Houman, Yoshifumi; Tahara, Ko; Shinmachi, Fumie; Noguchi, Akira; Satohiko, Sasaki; Hasegawa, Isao

2009-01-01T23:59:59.000Z

91

A design flow based on modular refinement  

E-Print Network (OSTI)

We propose a practical methodology based on modular refinement to design complex systems. The methodology relies on modules with latency-insensitive interfaces so that the refinements can change the timing contract of a ...

Dave, Nirav H.

92

Sharp Retrenchment, Modulated Refinement and Simulation  

E-Print Network (OSTI)

retrenchment is introduced and briefly justified informally, as a liberalisation of refinement. In sharp as a liberalisation of the notion of refinement, whose purpose was to enable more of the informal aspects of de

Banach, Richard

93

Entitlements exemptions for new refiners  

SciTech Connect

The practice of exempting start-up inventories from entitlement requirements for new refiners has been called into question by the Office of Hearings and Appeals and other responsible Departmental officials. ERA with the assistance of the Office of General Counsel considering resolving the matter through rulemaking; however, by October 26, 1979 no rulemaking had been published. Because of the absence of published standards for use in granting these entitlements to new refineries, undue reliance was placed on individual judgements that could result in inequities to applicants and increase the potential for fraud and abuse. Recommendations are given as follows: (1) if the program for granting entitlements exemptions to new refiners is continued, the Administrator, ERA should promptly take action to adopt an appropriate regulation to formalize the program by establishing standards and controls that will assure consistent and equitable application; in addition, files containing adjustments given to new refiners should be made complete to support benefits already allowed; and (2) whether the program is continued or discontinued, the General Counsel and the Administrator, ERA, should coordiate on how to evaluate the propriety of inventory adjustments previously granted to new refineries.

Not Available

1980-02-29T23:59:59.000Z

94

Reaping Energy Savings from Petroleum Refining  

E-Print Network (OSTI)

REAPING ENERGY SAVINGS FROM PETROLEUM REFINING Alan Deng, Project Manager, San Francisco, CA, Ron Cascone, Project Manager, White Plains, NY, Nexant, Inc. ABSTRACT The refining industry is one of the largest energy users in Pacific Gas.... Market barriers include lack of standards and perceptions of unproven reliability for new technologies in petroleum refining, lack of understanding of the refining process by energy efficiency professionals, lack of capital investment, high up...

Deng, A.; Cascone, R.

2006-01-01T23:59:59.000Z

95

Firing of pulverized solvent refined coal  

DOE Patents (OSTI)

An air-purged burner for the firing of pulverized solvent refined coal is constructed and operated such that the solvent refined coal can be fired without the coking thereof on the burner components. The air-purged burner is designed for the firing of pulverized solvent refined coal in a tangentially fired boiler.

Derbidge, T. Craig (Sunnyvale, CA); Mulholland, James A. (Chapel Hill, NC); Foster, Edward P. (Macungie, PA)

1986-01-01T23:59:59.000Z

96

ITP Petroleum Refining: Impacts of Condition Assessment on Energy...  

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

ITP Petroleum Refining: Impacts of Condition Assessment on Energy Use: Selected Applications in Chemicals Processing and Petroleum Refining ITP Petroleum Refining: Impacts of...

97

ITP Petroleum Refining: Energy and Environmental Profile of the...  

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

and Environmental Profile of the U.S. Petroleum Refining Industry (November 2007) ITP Petroleum Refining: Energy and Environmental Profile of the U.S. Petroleum Refining Industry...

98

Carbon dioxide pressure swing adsorption process using modified alumina adsorbents  

DOE Patents (OSTI)

A pressure swing adsorption process for absorbing CO.sub.2 from a gaseous mixture containing CO.sub.2 comprising introducing the gaseous mixture at a first pressure into a reactor containing a modified alumina adsorbent maintained at a temperature ranging from 100.degree. C. and 500.degree. C. to adsorb CO.sub.2 to provide a CO.sub.2 laden alumina adsorbent and a CO.sub.2 depleted gaseous mixture and contacting the CO.sub.2 laden adsorbent with a weakly adsorbing purge fluid at a second pressure which is lower than the first pressure to desorb CO.sub.2 from the CO.sub.2 laden alumina adsorbent. The modified alumina adsorbent which is formed by depositing a solution having a pH of 3.0 or more onto alumina and heating the alumina to a temperature ranging from 100.degree. C. and 600.degree. C., is not degraded by high concentrations of water under process operating conditions.

Gaffney, Thomas Richard (Allentown, PA); Golden, Timothy Christopher (Allentown, PA); Mayorga, Steven Gerard (Allentown, PA); Brzozowski, Jeffrey Richard (Bethlehem, PA); Taylor, Fred William (Allentown, PA)

1999-01-01T23:59:59.000Z

99

ALUMINUM REMOVAL FROM HANFORD WASTE BY LITHIUM HYDROTALCITE PRECIPITATION - LABORATORY SCALE VALIDATION ON WASTE SIMULANTS TEST REPORT  

SciTech Connect

To reduce the additional sodium hydroxide and ease processing of aluminum bearing sludge, the lithium hydrotalcite (LiHT) process has been invented by AREV A and demonstrated on a laboratory scale to remove alumina and regenerate/recycle sodium hydroxide prior to processing in the WTP. The method uses lithium hydroxide (LiOH) to precipitate sodium aluminate (NaAI(OH){sub 4}) as lithium hydrotalcite (Li{sub 2}CO{sub 3}.4Al(OH){sub 3}.3H{sub 2}O) while generating sodium hydroxide (NaOH). In addition, phosphate substitutes in the reaction to a high degree, also as a filterable solid. The sodium hydroxide enriched leachate is depleted in aluminum and phosphate, and is recycled to double-shell tanks (DSTs) to leach aluminum bearing sludges. This method eliminates importing sodium hydroxide to leach alumina sludge and eliminates a large fraction of the total sludge mass to be treated by the WTP. Plugging of process equipment is reduced by removal of both aluminum and phosphate in the tank wastes. Laboratory tests were conducted to verify the efficacy of the process and confirm the results of previous tests. These tests used both single-shell tank (SST) and DST simulants.

SAMS T; HAGERTY K

2011-01-27T23:59:59.000Z

100

Aluminum Carbothermic Technology  

SciTech Connect

This report documents the non-proprietary research and development conducted on the Aluminum Carbothermic Technology (ACT) project from contract inception on July 01, 2000 to termination on December 31, 2004. The objectives of the program were to demonstrate the technical and economic feasibility of a new carbothermic process for producing commercial grade aluminum, designated as the ''Advanced Reactor Process'' (ARP). The scope of the program ranged from fundamental research through small scale laboratory experiments (65 kW power input) to larger scale test modules at up to 1600 kW power input. The tasks included work on four components of the process, Stages 1 and 2 of the reactor, vapor recovery and metal alloy decarbonization; development of computer models; and economic analyses of capital and operating costs. Justification for developing a new, carbothermic route to aluminum production is defined by the potential benefits in reduced energy, lower costs and more favorable environmental characteristics than the conventional Hall-Heroult process presently used by the industry. The estimated metrics for these advantages include energy rates at approximately 10 kWh/kg Al (versus over 13 kWh/kg Al for Hall-Heroult), capital costs as low as $1250 per MTY (versus 4,000 per MTY for Hall-Heroult), operating cost reductions of over 10%, and up to 37% reduction in CO2 emissions for fossil-fuel power plants. Realization of these benefits would be critical to sustaining the US aluminum industries position as a global leader in primary aluminum production. One very attractive incentive for ARP is its perceived ability to cost effectively produce metal over a range of smelter sizes, not feasible for Hall-Heroult plants which must be large, 240,000 TPY or more, to be economical. Lower capacity stand alone carbothermic smelters could be utilized to supply molten metal at fabrication facilities similar to the mini-mill concept employed by the steel industry. Major accomplishments for the program include definition of the system thermo-chemistry, demonstration of reactor stage 1, development of reactor stage 2 critical components in a 500 kW module, experimental determination of the vapor recovery reactor fundamentals, detailed design and installation of an advanced stage 1/vapor recovery reactor, feasibility of efficient separation of Al-C metal alloy product, updated capital and operating cost estimates, and development of computer models for all steps of the Advanced Reactor Process.

Bruno, Marshall J.

2005-03-31T23:59:59.000Z

Note: This page contains sample records for the topic "aluminum alumina refining" 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

Possible Reasons Why Aluminum is a Beneficial Element for Melastoma malabathricum, an Aluminum Accumulator  

E-Print Network (OSTI)

of adaptation to high aluminum condition in native plantit has been well known that aluminum (Al) toxicity restricts

Watanabe, Toshihiro; Osaki, Mitsuru

2009-01-01T23:59:59.000Z

102

Solvent refined coal (SRC) process  

SciTech Connect

This report summarizes the progress of the Solvent Refined Coal (SRC) project by The Pittsburg and Midway Coal Mining Co. at the SRC Pilot Plant in Fort Lewis, Washington and the Gulf Science and Technology Company Process Development Unit (P-99) in Harmarville, Pennsylvania, for the Department of Energy during the month of October, 1980. The Fort Lewis Pilot Plant was shut down the entire month of October, 1980 for inspection and maintenance. PDU P-99 completed two runs during October investigating potential start-up modes for the Demonstration Plant.

Not Available

1980-12-01T23:59:59.000Z

103

Petroleum Refining Energy Use in Relation to Fuel Products Made  

E-Print Network (OSTI)

In recent years crude oils available to refiners have required more energy to refine and refiners have adjusted their processes to obtain better energy efficiency. In addition, the shift to lead-free gasoline has led to refining adjustments...

White, J. R.; Marshall, J. F.; Shoemaker, G. L.; Smith, R. B.

1983-01-01T23:59:59.000Z

104

Chapter 2 Conventional refining processes  

Science Journals Connector (OSTI)

Publisher Summary This chapter discusses conventional refining processes. Refining is a very elaborate operation by which crude oil is transformed into a series of products such as, gases, fuels, solvents, lube oils, etc. Crude oil is a complex mixture of hydrocarbons (HC) of different C/H ratio and molecular structures. The different classes of HC molecules comprise paraffins, olefins, cycles, aromatics, resins, asphaltenes, and other poly-unsaturated molecules. In addition to hydrocarbons, crude oils also contain some other compounds composed by other atoms (heteroatoms) than carbon and hydrogen. Those moieties consist of sulfur (S), nitrogen (N), oxygen (O), and heavy metals. Crudes are usually classified in terms of their specific gravity as very light, light, median, heavy, and extra heavy. An empirical set of units for the crude gravity, defined by the American Petroleum Institute (API), is currently used in oil industry. Their appearance varies from transparent liquids to black solids, going from light to heavy. Light oils have lower specific gravity and larger API gravity, while for heavy oils vice versa. Their composition also changes, and so the concentration of those heteroatomic compounds typically increases from light to heavy. The crude oils are also categorized in terms of their chemical composition, as for instance, sour crude oils, those presenting high acidity, paraffinic, naphthenic, and aromatic.

2007-01-01T23:59:59.000Z

105

Modeling Texture Evolution during Recrystallization in Aluminum  

E-Print Network (OSTI)

Modeling Texture Evolution during Recrystallization in Aluminum Abhijit Brahme1,2 , Joseph Fridy3, Aluminum, Grain Boundary Mobility, Nucleation, Oriented Growth, Oriented Nucleation, Stored Energy, Monte Carlo Modeling. #12;Modeling Texture Evolution during Recrystallization in Aluminum 2 1. Introduction

Rollett, Anthony D.

106

Representations of finite groups The Alperin-McKay refinement  

E-Print Network (OSTI)

Representations of finite groups The Alperin-McKay refinement The Isaacs-Navarro refinements The Mc-McKay refinement The Isaacs-Navarro refinements The basics Some history The McKay conjecture (for now) Let G groups The Alperin-McKay refinement The Isaacs-Navarro refinements The basics Some history The Mc

Cossey, James P.

107

(Data in thousand metric tons of metal unless otherwise noted) Domestic Production and Use: In 2005, 6 companies operated 15 primary aluminum smelters; 4 smelters  

E-Print Network (OSTI)

547 550 542 554 Norway 1,320 1,350 1,320 1,380 Russia 3,590 3,650 3,640 3,760 South Africa 863 830 850%. Tariff: Item Number Normal Trade Relations 12-31-05 Unwrought (in coils) 7601.10.3000 2.6% ad val aluminum production decreased slightly owing to cutbacks attributed to increased energy and alumina costs

108

More Aluminum due by 1968  

Science Journals Connector (OSTI)

Two more primary aluminum producers are promising more capacity to a hungry aluminum market. Anaconda will build a new potline at its reduction plant at Columbia Falls, Mont., and Reynolds Metals is planning four new ones in the Northwest.These ...

1966-08-22T23:59:59.000Z

109

Refining Bio-Oil alongside Petroleum  

Office of Energy Efficiency and Renewable Energy (EERE)

W.R. Grace and Pacific Northwest National Laboratory are working to establish a bio-oil refining process that users existing petroleum refinery infrastructure.

110

Cryogenic infrared filter made of alumina for use at millimeter wavelength  

Science Journals Connector (OSTI)

We propose a high-thermal-conductivity infrared filter using alumina for millimeter-wave detection systems. We constructed a prototype two-layer antireflection-coated alumina filter...

Inoue, Yuki; Matsumura, Tomotake; Hazumi, Masashi; Lee, Adrian T; Okamura, Takahiro; Suzuki, Aritoki; Tomaru, Takayuki; Yamaguchi, Hiroshi

2014-01-01T23:59:59.000Z

111

E-Print Network 3.0 - aluminas zirconias joints Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

the case of zirconia, the alumina-zirconia composites present five of the characteris- tic peaks... of this paper is to give two examples of foreign phases detected in alumina....

112

Factors contributing to the breakdown of sodium beta-alumina  

SciTech Connect

Clarification of the breakdown process occurring during charge transfer in sodium beta alumina solid electrolytes was derived from: (1) studying the effects of molten sodium contact at 350/sup 0/C on single crystal sodium beta alumina and polycrystalline sodium beta alumina; (2) determination of critical current density by monitoring acoustic emissions accompanying crack growth in sodium/sodium beta alumina/sodium cells subjected to linear current ramping at 1 mA cm/sup -2/ sec/sup -1/; (3) failure analysis conducted on cycled electrolytes, some from commercial sodium/sulfur cells, which had been subjected to up to 703 Ahr cm/sup -2/ of charge transfer. Gray coloration developing in beta aluminas in contact with molten sodium was found to be a consequence of formation, through reduction by sodium, of oxygen vacancies charge compensated by electrons. Electronic conductivity of the electrolyte increases as a result. No second phase formation was detected. Colored electrolytes from sodium/sulfur cells show evidence of a newly recognized degradation mechanism in which fracture occurs when sodium is reduced and deposited internally under pressure as metal in regions where an electronic conductivity gradient exists. Heating colored beta aluminas in air produces reoxidation and bleaching. Kinetics and other properties of the coloration and bleaching processes were determined. Critical current density was found to bear an inverse relation to average electrolyte grain size. Evidence was found in the cycled electrolytes for a slow crack growth mechanism and a progressive mode of degradation advancing from the sulfur electrode interface. Implications of the findings for the construction and operation of sodium/sulfur battery systems are discussed.

Buechele, A.C.

1982-05-01T23:59:59.000Z

113

Aluminum Zintl anion moieties within sodium aluminum clusters  

SciTech Connect

Through a synergetic combination of anion photoelectron spectroscopy and density functional theory based calculations, we have established that aluminum moieties within selected sodium-aluminum clusters are Zintl anions. Sodium–aluminum cluster anions, Na{sub m}Al{sub n}{sup ?}, were generated in a pulsed arc discharge source. After mass selection, their photoelectron spectra were measured by a magnetic bottle, electron energy analyzer. Calculations on a select sub-set of stoichiometries provided geometric structures and full charge analyses for both cluster anions and their neutral cluster counterparts, as well as photodetachment transition energies (stick spectra), and fragment molecular orbital based correlation diagrams.

Wang, Haopeng; Zhang, Xinxing; Ko, Yeon Jae; Grubisic, Andrej; Li, Xiang; Ganteför, Gerd; Bowen, Kit H., E-mail: AKandalam@wcupa.edu, E-mail: kiran@mcneese.edu, E-mail: kbowen@jhu.edu [Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218 (United States); Schnöckel, Hansgeorg [Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, 76128 Karlsruhe (Germany)] [Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, 76128 Karlsruhe (Germany); Eichhorn, Bryan W. [Department of Chemistry, University of Maryland at College Park, College Park, Maryland 20742 (United States)] [Department of Chemistry, University of Maryland at College Park, College Park, Maryland 20742 (United States); Lee, Mal-Soon; Jena, P. [Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284 (United States)] [Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284 (United States); Kandalam, Anil K., E-mail: AKandalam@wcupa.edu, E-mail: kiran@mcneese.edu, E-mail: kbowen@jhu.edu [Department of Physics, West Chester University of Pennsylvania, West Chester, Pennsylvania 19383 (United States); Kiran, Boggavarapu, E-mail: AKandalam@wcupa.edu, E-mail: kiran@mcneese.edu, E-mail: kbowen@jhu.edu [Department of Chemistry, McNeese State University, Lake Charles, Louisiana 70609 (United States)] [Department of Chemistry, McNeese State University, Lake Charles, Louisiana 70609 (United States)

2014-02-07T23:59:59.000Z

114

Atomistic force field for alumina fit to density functional theory  

SciTech Connect

We present a force field for bulk alumina (Al{sub 2}O{sub 3}), which has been parametrized by fitting the energies, forces, and stresses of a large database of reference configurations to those calculated with density functional theory (DFT). We use a functional form that is simpler and computationally more efficient than some existing models of alumina parametrized by a similar technique. Nevertheless, we demonstrate an accuracy of our potential that is comparable to those existing models and to DFT. We present calculations of crystal structures and energies, elastic constants, phonon spectra, thermal expansion, and point defect formation energies.

Sarsam, Joanne [Department of Materials, Imperial College London, London SW7 2AZ (United Kingdom) [Department of Materials, Imperial College London, London SW7 2AZ (United Kingdom); Thomas Young Centre, Imperial College London, London SW7 2AZ (United Kingdom); Finnis, Michael W.; Tangney, Paul, E-mail: p.tangney@imperial.ac.uk [Department of Materials, Imperial College London, London SW7 2AZ (United Kingdom) [Department of Materials, Imperial College London, London SW7 2AZ (United Kingdom); Thomas Young Centre, Imperial College London, London SW7 2AZ (United Kingdom); Department of Physics, Imperial College London, London SW7 2AZ (United Kingdom)

2013-11-28T23:59:59.000Z

115

Spray Rolling Aluminum Strip  

SciTech Connect

Spray forming is a competitive low-cost alternative to ingot metallurgy for manufacturing ferrous and non-ferrous alloy shapes. It produces materials with a reduced number of processing steps, while maintaining materials properties, with the possibility of near-net-shape manufacturing. However, there are several hurdles to large-scale commercial adoption of spray forming: 1) ensuring strip is consistently flat, 2) eliminating porosity, particularly at the deposit/substrate interface, and 3) improving material yield. Through this program, a new strip/sheet casting process, termed spray rolling, has been developed, which is an innovative manufacturing technique to produce aluminum net-shape products. Spray rolling combines the benefits of twin-roll casting and conventional spray forming, showing a promising potential to overcome the above hurdles associated with spray forming. Spray rolling requires less energy and generates less scrap than conventional processes and, consequently, enables the development of materials with lower environmental impacts in both processing and final products. Spray Rolling was developed as a collaborative project between the University of California-Davis, the Colorado School of Mines, the Idaho National Engineering and Environmental Laboratory, and an industry team. The following objectives of this project were achieved: (1) Demonstration of the feasibility of the spray rolling process at the bench-scale level and evaluation of the materials properties of spray rolled aluminum strip alloys; and (2) Demonstration of 2X scalability of the process and documentation of technical hurdles to further scale up and initiate technology transfer to industry for eventual commercialization of the process.

Lavernia, E.J.; Delplanque, J-P; McHugh, K.M.

2006-05-10T23:59:59.000Z

116

EUROSPF Conference APPLICATION TECHNOLOGY OF ALUMINUM BLOW  

E-Print Network (OSTI)

6th EUROSPF Conference APPLICATION TECHNOLOGY OF ALUMINUM BLOW FORMING FOR AUTOMOTIVE CLOSURE PANEL Replacement by aluminum for the closure panels is one of the common methods for lightening car body. However. As a solution to cover the low stamping formability of aluminum, Blow forming technology of aluminum which

Paris-Sud XI, Université de

117

Heavy oils (natural and refined)  

SciTech Connect

This section of the Petroleum and Coal review again contains discussions on the analysis of asphalts, bitumens, tars, and pitches as well as heavy natural and refined oils. The characterization of these heavy (high-boiling) materials impacts the way they are produced, their effect on the processing environment, and their suitability for various end products. The analysis of these heavy materials is becoming increasingly important as crude oil stocks get heavier and larger quantities of high-boiling materials are processed to derive clean lower boiling products. This review covers articles found in the literature in the last two years. This review will cover new or improved analytical procedures and applications to new sources of heavy oils. This review will be subdivided into individual separation or analytical techniques. Combined analytical techniques (e.g., GC-FT-IR) will be included under the technique most emphasized in the article. The review is categorized further by chromatographic techniques, spectroscopic techniques, thermal techniques, and miscellaneous. 71 refs.

Lintelmann, K.A. [Marathon Oil Co., Littleton, CO (United States)

1995-06-15T23:59:59.000Z

118

Viscosity of alumina nanoparticles dispersed in car engine coolant  

SciTech Connect

The present paper, describes our experimental results on the viscosity of the nanofluid prepared by dispersing alumina nanoparticles (<50 nm) in commercial car coolant. The nanofluid prepared with calculated amount of oleic acid (surfactant) was tested to be stable for more than 80 days. The viscosity of the nanofluids is measured both as a function of alumina volume fraction and temperature between 10 and 50 C. While the pure base fluid display Newtonian behavior over the measured temperature, it transforms to a non-Newtonian fluid with addition of a small amount of alumina nanoparticles. Our results show that viscosity of the nanofluid increases with increasing nanoparticle concentration and decreases with increase in temperature. Most of the frequently used classical models severely under predict the measured viscosity. Volume fraction dependence of the nanofluid viscosity, however, is predicted fairly well on the basis of a recently reported theoretical model for nanofluids that takes into account the effect of Brownian motion of nanoparticles in the nanofluid. The temperature dependence of the viscosity of engine coolant based alumina nanofluids obeys the empirical correlation of the type: log ({mu}{sub nf}) = A exp(BT), proposed earlier by Namburu et al. (author)

Kole, Madhusree; Dey, T.K. [Thermophysical Measurements Laboratory, Cryogenic Engineering Centre, Indian Institute of Technology, Kharagpur 721 302 (India)

2010-09-15T23:59:59.000Z

119

Vitrification of High-Level Alumina Nuclear Waste  

Science Journals Connector (OSTI)

Borophosphate glass compositions have been developed for the vitrification of a high alumina calcined defense waste. The effect of substituting SiO2 and P2O5 for B2O3 on the viscosity and leach resistance was mea...

J. R. Brotzman

1980-01-01T23:59:59.000Z

120

Biocompatibility of atomic layer-deposited alumina thin films  

E-Print Network (OSTI)

. These results sug- gest that patterning a substrate with hydrophilic and hydro- phobic groups can control cell and excellent dielectric properties for bio- micro electro mechanical systems (Bio-MEMS) in sensors, actuators of atomic layer-deposited (ALD) alumina (Al2O3) and hydro- phobic coatings. While these coatings

George, Steven M.

Note: This page contains sample records for the topic "aluminum alumina refining" 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

Re-refining enters a new era  

SciTech Connect

The author describes the current state of affairs in the re-refining industry. Re-refiners are companies that recycle used lubricating oil into high quality base oils and other petroleum products. The re-refining industry has experienced it's own unique problems, as well as some of those occurring in the rest of the petroleum industry. For these reasons, other solutions are forthcoming, resulting in a new era. The future will see existing plants retrofitted, shut down plants being reopened, expanded and modernized and in the long term, new grass roots ''mega'' plants will be constructed in strategic marketing territories.

Booth, G.T. III

1987-01-01T23:59:59.000Z

122

Firing of pulverized solvent refined coal  

DOE Patents (OSTI)

A burner for the firing of pulverized solvent refined coal is constructed and operated such that the solvent refined coal can be fired successfully without any performance limitations and without the coking of the solvent refined coal on the burner components. The burner is provided with a tangential inlet of primary air and pulverized fuel, a vaned diffusion swirler for the mixture of primary air and fuel, a center water-cooled conical diffuser shielding the incoming fuel from the heat radiation from the flame and deflecting the primary air and fuel steam into the secondary air, and a watercooled annulus located between the primary air and secondary air flows.

Lennon, Dennis R. (Allentown, PA); Snedden, Richard B. (McKeesport, PA); Foster, Edward P. (Macungie, PA); Bellas, George T. (Library, PA)

1990-05-15T23:59:59.000Z

123

Aluminum across the Americas: Caribbean Mobilities and Transnational American Studies  

E-Print Network (OSTI)

E. Jamaica in the World Aluminum Industry, 1838–1973, Vol.2007. Doordan, Dennis. “Promoting Aluminum: Designers andthe American Aluminum Industry. ” Design Issues 9, no. 2 (

Sheller, Mimi

2013-01-01T23:59:59.000Z

124

Aluminum-detoxifying compounds in roots of Eucalyptus camaldulensis  

E-Print Network (OSTI)

M, Yamanoshita T, Kojima K, Role of aluminum-bindingligands in aluminum resistance of Eucalyptus camaldulensisH, Sasaki S, Kojima K. Aluminum distribution and reactive

Tahara, Ko; Hashida, Koh; Ohara, Seiji; Kojima, Katsumi; Shinohara, Kenji

2009-01-01T23:59:59.000Z

125

Commonwealth Aluminum: Manufacturer Conducts Plant-Wide Energy...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Commonwealth Aluminum: Manufacturer Conducts Plant-Wide Energy Assessments at Two Aluminum Sheet Production Operations Commonwealth Aluminum: Manufacturer Conducts Plant-Wide...

127

Valero Refining Company - NJ | Open Energy Information  

Open Energy Info (EERE)

Valero Refining Company - NJ Valero Refining Company - NJ Jump to: navigation, search Name Valero Refining Company - NJ Place New Jersey Utility Id 56325 Utility Location Yes Ownership R Operates Generating Plant 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 No rate schedules available. Average Rates Industrial: $0.0652/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a" Retrieved from "http://en.openei.org/w/index.php?title=Valero_Refining_Company_-_NJ&oldid=411921" Categories: EIA Utility Companies and Aliases

128

Introducing Reference Semantics via Refinement Graeme Smith  

E-Print Network (OSTI)

Introducing Reference Semantics via Refinement Graeme Smith Software Verification Research Centre, University of Queensland, Australia smith@svrc.uq.edu.au Abstract. Two types of semantics have been given

Smith, Graeme

129

Source: Energy Information Administration, Form EIA-782A, "Refiners...  

Annual Energy Outlook 2012 (EIA)

Gallons per Day Motor Gasoline No. 2 Distillate Residual Fuel Oil 5. U.S. Refiner Wholesale Petroleum Product Volumes Figure Percentages of Refiner Wholesale Volumes 1997...

130

Source: Energy Information Administration, Form EIA-782A, "Refiners...  

Annual Energy Outlook 2012 (EIA)

Gallons per Day Motor Gasoline No. 2 Distillate Residual Fuel Oil 5. U.S. Refiner Wholesale Petroleum Product Volumes Figure Percentages of Refiner Wholesale Volumes 1996...

131

Source: Energy Information Administration, Form EIA-782A, "Refiners...  

Annual Energy Outlook 2012 (EIA)

Gallons per Day Motor Gasoline No. 2 Distillate Residual Fuel Oil 5. U.S. Refiner Wholesale Petroleum Product Volumes Figure Percentages of Refiner Wholesale Volumes 1995...

132

Diameter-Refined Metallic Carbon Nanotubes as Optically Tunable...  

NLE Websites -- All DOE Office Websites (Extended Search)

Diameter-Refined Metallic Carbon Nanotubes as Optically Tunable Transparent Conductors Home > Research > ANSER Research Highlights > Diameter-Refined Metallic Carbon Nanotubes as...

133

Genealogy of major U.S. refiners  

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

of major U.S. refiners of major U.S. refiners 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 Amoco SOHIO BP ARCO Mapco Williams Clark Refining 1/89 12/98 4/00 3/98 Orion Diamond Shamrock Ultramar k 12/96 7/03 Ultramar Diamond Shamrock (UDS) Total North America UDS 9/97 Valero Salomon (Basis) Valero Williams BP BP b BP-Husky Refining LLC (jv) Husky Huntway 5/97 6/01 9/05 Valero Premcor g Valero Valero Valero 12/01 7/94 e 12/98 f Carlyle Group y Coastal 3/03 d 12/88 a 6/01 o Sun Company Sunoco v 7/07 i 4/08 c 5/04 h Pacific Refining (jv) 12/88 r El Paso 1/04 w 10/98 m 6/00 n 9/89 t 8/94 u See notes, footnotes, and source notes below. PBF Energy 6/10 p 12/10 q 3/11 x 10/11 j 9/00 l 1/01 s Genealogy of major U.S. refiners (continued) 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013

134

Scaleable Clean Aluminum Melting Systems  

SciTech Connect

The project entitled 'Scaleable Clean Aluminum Melting Systems' was a Cooperative Research and Development Agreements (CRADAs) between Oak Ridge National Laboratory (ORNL) and Secat Inc. The three-year project was initially funded for the first year and was then canceled due to funding cuts at the DOE headquarters. The limited funds allowed the research team to visit industrial sites and investigate the status of using immersion heaters for aluminum melting applications. Primary concepts were proposed on the design of furnaces using immersion heaters for melting. The proposed project can continue if the funding agency resumes the funds to this research. The objective of this project was to develop and demonstrate integrated, retrofitable technologies for clean melting systems for aluminum in both the Metal Casting and integrated aluminum processing industries. The scope focused on immersion heating coupled with metal circulation systems that provide significant opportunity for energy savings as well as reduction of melt loss in the form of dross. The project aimed at the development and integration of technologies that would enable significant reduction in the energy consumption and environmental impacts of melting aluminum through substitution of immersion heating for the conventional radiant burner methods used in reverberatory furnaces. Specifically, the program would couple heater improvements with furnace modeling that would enable cost-effective retrofits to a range of existing furnace sizes, reducing the economic barrier to application.

Han, Q.; Das, S.K. (Secat, Inc.)

2008-02-15T23:59:59.000Z

135

Refining intensity, energy consumption, and pulp quality in two-stage chip refining  

SciTech Connect

This paper reports on thermomechanical pulps produced in two pilot plant installations. Both installations were conventional two-stage systems in which the first stage was pressurized and the second was atmospheric. At a given specific energy, pulp quality was improved. Alternatively, for a given pulp quality, the energy consumption was reduced when refining in the first stage was carried out at a high refining intensity. High refining intensity was reached by operating the first stage either at a high rotational speed or low consistency. There were indications that these benefits could be enhanced if the second stage were operated at a low refining intensity.

Miles, K.B.; May, W.D.; Karnis, A. (Pulp and Paper Research Inst. of Canada, 570 St. John's Boulevard, Pointe Claire, Quebec H9R 3J9 (CA))

1991-03-01T23:59:59.000Z

136

Joining of 6061 Aluminum Matrix-Ceramic Particle Reinforced Composites  

E-Print Network (OSTI)

) ) Joining of 6061 Aluminum Matrix-Ceramic Particle Reinforced Composites by R. Kiehn and T. W................... .. ....... ... ... 3 Literature Review ......... ...... ..... ... . . 3 Conventional Aluminum Brazing ........ 4 Aluminum Composite Joining ........... 5 Aluminum Joining by Unconventional Methods

Eagar, Thomas W.

137

Protective coating for alumina-silicon carbide whisker composites  

DOE Patents (OSTI)

Ceramic composites formed of an alumina matrix reinforced with silicon carbide whiskers homogenously dispersed therein are provided with a protective coating for preventing fracture strength degradation of the composite by oxidation during exposure to high temperatures in oxygen-containing atmospheres. The coating prevents oxidation of the silicon carbide whiskers within the matrix by sealing off the exterior of the matrix so as to prevent oxygen transport into the interior of the matrix. The coating is formed of mullite or mullite plus silicon oxide and alumina and is formed in place by heating the composite in air to a temperature greater than 1200.degree. C. This coating is less than about 100 microns thick and adequately protects the underlying composite from fracture strength degradation due to oxidation.

Tiegs, Terry N. (Lenoir City, TN)

1989-01-01T23:59:59.000Z

138

Organic removal from domestic wastewater by activated alumina adsorption  

E-Print Network (OSTI)

of the major groups of pollutants in wastewaters. Adsorption by granular activated carbon, a non-polar adsorbent, is now the primary treatment process for removal of residual organics from biologically treated wastewater. The ability of activated alumina..., which is a polar adsorbent, to remove total organic carbon (TOC) and some trace organics from domestic wastewater has been evaluated. Batch adsorption experiments were used to investigate the effect of pH and total dissolved solids on activated...

Yang, Pe-Der

2012-06-07T23:59:59.000Z

139

Directional solidification of the alumina-zirconia ceramic eutectic system  

SciTech Connect

It is possible to produce alumina-zirconia ceramic samples through existing solidification techniques. The resulting microstructures typically consist of rods of zirconia in an alumina matrix, although a lamellar structure has been noted in some cases. In nearly all cases, colony growth was present which may possibly result from grain size, repeated nucleation events, and lamellar oscillations. In the same vein, it appears that the amount of impurities within the system might be the underlying cause for the colony growth. Colony growth was diminished through impurity control as the higher purity samples exhibited colony free behavior. In addition to colony formations, faceted alumina dendrites or nonfaceted zirconia dendrites may result in the ceramic if the sample is solidified out of the coupled zone. In all cases, for larger-sized Bridgman samples, a lower limit in the eutectic spacing was noted. The solidification model which includes the kinetic effect has been developed, although the effect appears to be negligible under present experimental conditions. A spacing limit might also occur due to the result of heat flow problems. Heat flow out of the ceramic is difficult to control, often causing radial and not axial growth. This behavior is exaggerated in the presence of impurities. Thus, higher purity powders should always be used. Higher purity samples, in addition to yielding a more microstructurally uniform ceramic, also showed increased directionality. In the future, the kinetic model needs to be examined in more detail, and further research needs to be accomplished in the area of molten ceramics. Once better system constants are in place, the kinetic model will give a better indication of the behavior in the alumina-zirconia system.

Boldt, C.

1994-07-27T23:59:59.000Z

140

Nanotube Fabrication byNanotube Fabrication by Anodic Aluminum Oxide,Anodic Aluminum Oxide,  

E-Print Network (OSTI)

Nanotube Fabrication byNanotube Fabrication by Anodic Aluminum Oxide,Anodic Aluminum Oxide, Self-regulating phenomena in materials science: Self-assembly of nanopores during anodic oxidation of aluminum (AAO) Self combined anodic aluminum oxide (AAO) nanostructures with atomic layer deposition (ALD) to fabricate

Rubloff, Gary W.

Note: This page contains sample records for the topic "aluminum alumina refining" 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

NW Aluminum Industry Study (contracts/subscription)  

NLE Websites -- All DOE Office Websites (Extended Search)

Subscription Contracts Announcements Subscription Strategy Subscription Products Aluminum Study IOUPublic Settlement Slice of the System Billing Procedures Firstgov Northwest...

142

Green Petroleum Refining -Mathematical Models for Optimizing Petroleum Refining Under Emission Constraints  

E-Print Network (OSTI)

Green Petroleum Refining - Mathematical Models for Optimizing Petroleum Refining Under Emission understand that my thesis may be made electronically available to the public. #12;iii Abstract Petroleum and treating options for petroleum refinery waste streams. The performance of the developed model

Anderson, Charles H.

143

Aluminum in Superconducting Magnets Robert J. Weggel  

E-Print Network (OSTI)

Aluminum in Superconducting Magnets Robert J. Weggel Magnet Optimization Research Engineering is aluminum, either ultrapure, as quenchstabilization matrix metal, and/or alloyed and coldworked and heat for magnets in which the stresses and strains are modest. The strongest aluminum alloy commercially available

McDonald, Kirk

144

Aluminum: Principled Scenario Exploration through Minimality  

E-Print Network (OSTI)

Aluminum: Principled Scenario Exploration through Minimality Tim Nelson1, Salman Saghafi1, Daniel J. We present Aluminum, a modification of Alloy that presents only minimal scenarios: those that contain no more than is necessary. Aluminum lets users explore the scenario space by adding to scenarios

Dougherty, Daniel J.

145

Aluminum--2004 5. Areferencethatincludesasectionmark()isfoundintheinternet  

E-Print Network (OSTI)

Aluminum--2004 5. Areferencethatincludesasectionmark(§)isfoundintheinternet ReferenceCitedsection. Aluminum ByPatriciaA.Plunkert Domestic survey data and tables were prepared by Benjamin S. Goff.S.GeologicalSurvey(uSGS)requestforproductiondata. CommercialDevelopmentCo.(CDC)ofSt.louis,mO, boughtKaiserAluminumCorp.'s200,000-metric-ton-per-year (t

146

Aluminum: Principled Scenario Exploration through Minimality  

E-Print Network (OSTI)

Aluminum: Principled Scenario Exploration through Minimality Tim Nelson1, Salman Saghafi1, Daniel J Aluminum, a modification of Alloy that presents only minimal scenarios: those that contain no more than is necessary. Aluminum lets users explore the scenario space by adding to scenarios and backtracking. It also

Krishnamurthi, Shriram

147

Comparison of the Structure and Porous Texture of Alumina Gels Synthesized by Different Methods  

Science Journals Connector (OSTI)

Because of ultralow thermal conductivity, excellent catalytic activity, and better heat resistance than silica aerogel, alumina-based aerogel has drawn great interest as thermal insulators and catalysts. ...

A. C. Pierre; E. Elaloui; G. M. Pajonk

1998-01-06T23:59:59.000Z

148

E-Print Network 3.0 - alumina inlay failure Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Robert O. - Lawrence Berkeley National Laboratory Collection: Materials Science 4 Fracture and Fatigue Behavior at Ambient and Elevated Temperatures of Alumina Bonded with...

149

Aluminous goethite in the bayer process and its impact on alumina recovery and settling.  

E-Print Network (OSTI)

??Aluminium substituted goethite present in the Bayer process is closely related to settling problem and reduction of alumina recovery. The finer particle size and larger… (more)

Wu, Fei

2012-01-01T23:59:59.000Z

150

Hydrogen Piping Experience in Chevron Refining  

NLE Websites -- All DOE Office Websites (Extended Search)

Piping Piping Experience in Chevron Refining Ned Niccolls Materials Engineer Chevron Energy Technology Company Hydrogen Pipeline Working Group Workshop August 30-31, 2005 Outline 2 Overall perspectives from long term use of hydrogen piping in refining. Piping specifications and practices. The (few) problem areas. Related industry work: American Petroleum Institute corrosion and materials work on high temperature hydrogen attack. Overall Perspectives 3 Few problems with hydrogen piping operating at ambient to at least 800F and pressures up to at least 3000psia as long as we stay within well- defined limits H2S contamination presents many more problems, beyond the scope of this talk We will note a couple of specific vulnerabilities Refining tracks materials performance in

151

Hydrotreating operations discussed at refining meeting  

SciTech Connect

At the most recent National Petroleum Refiners Association question and answer session on refining and petrochemical technology, refiners and a panel of experts exchanged experiences on hydrotreater operations. Topics addressed included reactor pressurization, scale basket removal, and the use of antifoulants in effluent exchangers. This article presents comments from the panelists on the following questions. (1) What is the industry practice used to speed up the pressurization of 2.25 Cr/1 Mo reactors during start-up? Is there any relationship between reactor skin temperature and pressure used? (2) Has anyone removed scale baskets from a hydrotreating reactor and compared operations before and after? If so, were there any noticeable differences? Why? (3) What is the industry experience with the use of antifoulants for hydrocracking or hydrotreating reactor effluent exchangers?

NONE

1995-06-12T23:59:59.000Z

152

Norwegian Silicon Refining AS | Open Energy Information  

Open Energy Info (EERE)

Refining AS Refining AS Jump to: navigation, search Name Norwegian Silicon Refining AS Place Oslo, Norway Zip 214 Product Oslo-based company with an upgraded metallurgical silicon (UMG) production process called the Stubergh method. Coordinates 59.91228°, 10.74998° 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":59.91228,"lon":10.74998,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

153

1995 Reformulated Gasoline Market Affected Refiners Differently  

Gasoline and Diesel Fuel Update (EIA)

5 Reformulated Gasoline Market Affected 5 Reformulated Gasoline Market Affected Refiners Differently by John Zyren, Charles Dale and Charles Riner Introduction The United States has completed its first summer driving season using reformulated gasoline (RFG). Motorists noticed price increases at the retail level, resulting from the increased cost to produce and deliver the product, as well as from the tight sup- ply/demand balance during the summer. This arti- cle focuses on the costs of producing RFG as experienced by different types of refiners and on how these refiners fared this past summer, given the prices for RFG at the refinery gate. RFG Regulatory Requirements The use of RFG is a result of the Clean Air Act Amendments of 1990 (CAAA). The CAAA cover a wide range of programs aimed at improving air qual-

154

Viscosity of aqueous and cyanate ester suspensions containing alumina nanoparticles  

SciTech Connect

The viscosities of both aqueous and cyanate ester monomer (BECy) based suspensions of alumina nanoparticle were studied. The applications for these suspensions are different: aqueous suspensions of alumina nanoparticles are used in the production of technical ceramics made by slip casting or tape casting, and the BECy based suspensions are being developed for use in an injection-type composite repair resin. In the case of aqueous suspensions, it is advantageous to achieve a high solids content with low viscosity in order to produce a high quality product. The addition of a dispersant is useful so that higher solids content suspensions can be used with lower viscosities. For BECy suspensions, the addition of nanoparticles to the BECy resin is expected to enhance the mechanical properties of the cured composite. The addition of saccharides to aqueous suspensions leads to viscosity reduction. Through DSC measurements it was found that the saccharide molecules formed a solution with water and this resulted in lowering the melting temperature of the free water according to classic freezing point depression. Saccharides also lowered the melting temperature of the bound water, but this followed a different rule. The shear thinning and melting behaviors of the suspensions were used to develop a model based on fractal-type agglomeration. It is believed that the structure of the particle flocs in these suspensions changes with the addition of saccharides which leads to the resultant viscosity decrease. The viscosity of the BECy suspensions increased with solids content, and the viscosity increase was greater than predicted by the classical Einstein equation for dilute suspensions. Instead, the Mooney equation fits the viscosity behavior well from 0-20 vol% solids. The viscosity reduction achieved at high particle loadings by the addition of benzoic acid was also investigated by NMR. It appears that the benzoic acid interacts with the surface of the alumina particle which may be the cause of the viscosity reduction. The flow behavior of alumina particles in water and BECy is markedly different. Aqueous alumina suspensions are shear thinning at all alumina loadings and capable of 50 vol% loading before losing fluidity whereas BECy/alumina suspensions show Newtonian behavior up to 5 vol%, and above 5 vol% show shear thinning at all shear rates. Highly loaded suspensions (i.e. 20vol% alumina) exhibit shear thinning at low and moderate shear rates and shear thickening at higher shear rates. The maximum particle loading for a fluid suspension, in this case, appears to be about 20 vol%. The difference in the viscosity of these suspensions must be related to the solvent-particle interactions for each system. The reason is not exactly known, but there are some notable differences between BECy and water. Water molecules are {approx}0.28 nm in length and highly hydrogen bonded with a low viscosity (1 mPa's) whereas in the cyanate ester (BECy) system, the solvent molecule is about 1.2 nm, in the largest dimension, with surfaces of varied charge distribution throughout the molecule. The viscosity of the monomer is also reasonably low for organic polymer precursor, about 7 mPa's. Nanoparticles in water tend to agglomerate and form flocs which are broken with the shear force applied during viscosity measurement. The particle-particle interaction is very important in this system. In BECy, the particles appear to be well dispersed and not as interactive. The solvent-particle interaction appears to be most important. It is not known exactly how the alumina particles interact with the monomer, but NMR suggests hydrogen bonding. These hydrogen bonds between the particle and monomer could very well affect the viscosity. A conclusion that can be reached in this work is that the presence of hydroxyl groups on the surface of the alumina particles is significant and seems to affect the interactions between other particles and the solvent. Thus, the hydrogen bonding between particles, particle/additive and/or particle/solvent dictates the behavior of nanos

Lawler, Katherine

2009-08-05T23:59:59.000Z

155

Complex foamed aluminum parts as permanent cores in aluminum castings  

SciTech Connect

The feasibility of complex shaped aluminum foam parts as permanent cores in aluminum castings has been investigated. The foamed samples were prepared by injection of the foam into sand molds. It turned out that sound castings can be produced if the foam core is properly preheated and/or surface treated before casting. The effect of the foam core on the performance of the casting was evaluated by in compression testing and by measuring structural damping. The gain in the related properties turned out to be much higher than the weight increase of the casting due to the presence of the core. The weight increase may be partially offset through a reduction of the wall-thickness of the shell.

Simancik, F. [Inst. of Materials and Machine Mechanics, Bratislava (Slovakia); Schoerghuber, F. [Illichmann GmbH, Altmuenster (Austria)

1998-12-31T23:59:59.000Z

156

Refinement of the crystal structure of hydroboracite  

Science Journals Connector (OSTI)

...1978) ABSTRACT The crystal structure of caysichite was determined and refined to R=0.06, using 959 independentreflec-iions; the space group is CcmZy with a 13,27(L), b 13.91(1),c 9.73G)4,. The crystal chemical formula is Ye(CagREJ...

C. Sabelli; A. Stoppioni

157

Focus on Venezuelan heavy crude: refining margins  

SciTech Connect

Of six crudes refined in the US Gulf Coast, heavy Venezuelan crude Lagunillas (15/sup 0/ API) provides the best margin per barrel. Data for end of December 1983 and the first three weeks of January show that margins on all crudes are on the rise in this market, due to a turnaround in product prices. The lighter crudes are showing the greatest increase in Gross Product Worth. This is having a modest shrinking effect on the margin differential between light and heavy crudes in this market. The domestic crude West Texas Intermediate, at 40/sup 0/ API, provides the highest GPW in this crude slate sample, over US $31 per barrel, compared to GPW of under US $28 per barrel for Lagunillas. Still, as Lagunillas cost about US $8 less than does WTI, refiners with sufficient residue conversion capacity can be earning about US $3.50 more in margin per barrel than they can with WTI. Although few refiners would be using a 15/sup 0/ API crude exclusively for any length of time, heavier oil's inclusion in modern refiners' diets is enhancing their competitive position more than any other single factor. This issue of Energy Detente presents the fuel price/tax series and industrial fuel prices for January 1984 for countries of the Western Hemisphere.

Not Available

1984-01-25T23:59:59.000Z

158

Transforming and Refining Abstract Constraint Specifications  

E-Print Network (OSTI)

Transforming and Refining Abstract Constraint Specifications Alan M. Frisch1 , Brahim Hnich2 , Ian choose model transformations to reduce greatly the amount of effort that is required to solve a problem by systematic search. It is a consid- erable challenge to automate such transformations. A problem may be viewed

Walsh, Toby

159

Behavior of cement mortars containing an industrial waste from aluminium refining: Stability in Ca(OH){sub 2} solutions  

SciTech Connect

The physical and chemical interaction between a solid industrial waste from aluminium refining and saturated Ca(OH){sub 2} solution, as well as the effects of substituting siliceous sand for the waste on the physical and mechanical properties of mortars were studied. The waste is a solid that contains reactive alumina capable of combining with the calcium hydroxide. These reactions result in stable and insoluble compounds. This alumina, together with the halite (also present in the waste composition), chemically react with a saturated solution of Ca(OH){sub 2}, giving as a main reaction product the so-called Friedel's salt (Ca{sub 4}Al{sub 2}Cl{sub 2}O{sub 6} {center{underscore}dot} 10 H{sub 2}O). Straetlingite and Si-hydrogarnets were among other products detected. The waste has a high specific surface area. The cement/waste mixtures therefore require a higher quantity of mixing water than cement/sand mixtures. The result is a decrease of the mechanical strengths and an increase of the total porosity. However, a decrease of the average size of the pores occurs, which can have a positive effect on the durability of the final material.

Puertas, F.; Blanco-Varela, M.T.; Vazquez, T.

1999-10-01T23:59:59.000Z

160

Silicon carbide whisker-zirconia reinforced mullite and alumina ceramics  

DOE Patents (OSTI)

The flexural strength and/or fracture toughness of SiC whisker-reinforced composites utilizing mullite or alumina as the matrix material for the composite are increased by the addition of zirconia in a monoclinic or tetragonal phase to the matrix. The zirconia addition also provides for a lower hot-pressing temperature and increases the flexural strength and/or fracture toughness of the SiC whisker-reinforced composites over SiC whisker-reinforced composites of the similar matrix materials reinforced with similar concentrations of SiC whiskers.

Becher, Paul F. (Oak Ridge, TN); Tiegs, Terry N. (Lenoir City, TN)

1987-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "aluminum alumina refining" 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

Tetragonal structure model for boehmite-derived ?-alumina  

Science Journals Connector (OSTI)

?-alumina (?-Al2O3) derived from boehmite has historically been described as having a cubic spinel structure with Fd3¯m symmetry, despite reports of tetragonal distortion in the structure. Based on neutron diffraction, transmission electron microscopy, and magic angle spinning NMR data, we propose a tetragonal model for the structure of boehmite-derived ?-Al2O3 with I41/amd space group symmetry, a maximal subgroup of Fd3¯m. It is also demonstrated that an accurate average structural model cannot be achieved if the cations are restricted to spinel positions.

G. Paglia; C. E. Buckley; A. L. Rohl; B. A. Hunter; R. D. Hart; J. V. Hanna; L. T. Byrne

2003-10-27T23:59:59.000Z

162

Sorption and Diffusion of Simple Paraffins in Silica-Alumina Cracking Catalyst  

Science Journals Connector (OSTI)

...Paraffins in Silica-Alumina Cracking Catalyst R. M. Barrer T. Gabor Sorption and...propane in the silica-alumina cracking catalyst previously employed in similar measurements...behaviour in the micropore structure of the catalyst, for the species studied. The ratio...

1960-01-01T23:59:59.000Z

163

Microwave sintering of pure and doped nanocrystalline alumina compacts  

SciTech Connect

A single-mode cavity microwave furnace, operating in the TE{sub 103} mode at 2.45 GHz is being used to investigate sintering of pure and doped nanocrystalline alumina. The purpose of these experiments is to determine the effect of additives on the sintering process in the nanocrystalline regime. Using the sol-gel method, high purity Al{sub 2}O{sub 3} nanocrystalline powders were synthesized. These powders were calcined at 700 C and then CIP`ed to 414 MPa, producing 0.4 in. diameter, 0.25 in. high cylindrical compacts. The compacts were heated in the microwave furnace to temperatures between 1,100 C to approximately 1,800 C and were then brought back to room temperature using a triangular heating profile of about 30 minutes duration. A two-color IR pyrometer was used to monitor the surface temperature of the workpiece. The additives tested in this work lowered the temperature needed for densification but this effect was offset by increased grain growth. Initial grain growth from <5 nm to {approximately}50 nm was closely correlated with the {gamma} to {alpha}-alumina phase transition.

Bruce, R.W. [SFA, Inc., Largo, MD (United States); Fliflet, A.W.; Lewis, D. III; Rayne, R.J.; Bender, B.A.; Chow, G.M.; Schoen, P.E. [Naval Research Lab., Washington, DC (United States); Kurihara, L.K. [Georgetown Univ., Washington, DC (United States). Dept. of Biochemistry

1996-12-31T23:59:59.000Z

164

Production of anhydrous aluminum chloride composition  

DOE Patents (OSTI)

A process is described for producing an anhydrous aluminum chloride composition from a water-based aluminous material such as a slurry of aluminum hydroxide in a multistage extraction process in which the aluminum ion is first extracted into an organic liquid containing an acidic extractant and then extracted from the organic phase into an alkali metal chloride or chlorides to form a melt containing a mixture of chlorides of alkali metal and aluminum. In the process, the organic liquid may be recycled. In addition, the process advantageously includes an electrolysis cell for producing metallic aluminum and the alkali metal chloride or chlorides may be recycled for extraction of the aluminum from the organic phase.

Vandergrift, G.F. III; Krumpelt, M.; Horwitz, E.P.

1981-10-08T23:59:59.000Z

165

Using supercritical fluids to refine hydrocarbons  

DOE Patents (OSTI)

This is a method to reactively refine hydrocarbons, such as heavy oils with API gravities of less than 20.degree. and bitumen-like hydrocarbons with viscosities greater than 1000 cp at standard temperature and pressure using a selected fluid at supercritical conditions. The reaction portion of the method delivers lighter weight, more volatile hydrocarbons to an attached contacting device that operates in mixed subcritical or supercritical modes. This separates the reaction products into portions that are viable for use or sale without further conventional refining and hydro-processing techniques. This method produces valuable products with fewer processing steps, lower costs, increased worker safety due to less processing and handling, allow greater opportunity for new oil field development and subsequent positive economic impact, reduce related carbon dioxide, and wastes typical with conventional refineries.

Yarbro, Stephen Lee

2014-11-25T23:59:59.000Z

166

Improve corrosion control in refining processes  

SciTech Connect

New guidelines show how to control corrosion and environmental cracking of process equipment when processing feedstocks containing sulfur and/or naphthenic acids. To be cost competitive refiners must be able to process crudes of opportunity. These feedstocks when processed under high temperatures and pressures and alkaline conditions can cause brittle cracks and blisters in susceptible steel-fabricated equipment. Even with advances in steel metallurgy, wet H{sub 2}S cracking continues to be a problem. New research data shows that process conditions such as temperature, pH and flowrate are key factors in the corrosion process. Before selecting equipment material, operators must understand the corrosion mechanisms present within process conditions. Several case histories investigate the corrosion reactions found when refining naphthenic crudes and operating amine gas-sweetening systems. These examples show how to use process controls, inhibitors and/or metallurgy to control corrosion and environmental cracking, to improve material selection and to extend equipment service life.

Kane, R.D.; Cayard, M.S. [CLI International, Houston, TX (United States)

1995-11-01T23:59:59.000Z

167

Parabolic refined invariants and Macdonald polynomials  

E-Print Network (OSTI)

A string theoretic derivation is given for the conjecture of Hausel, Letellier, and Rodriguez-Villegas on the cohomology of character varieties with marked points. Their formula is identified with a refined BPS expansion in the stable pair theory of a local root stack, generalizing previous work of the first two authors in collaboration with G. Pan. Haiman's geometric construction for Macdonald polynomials is shown to emerge naturally in this context via geometric engineering. In particular this yields a new conjectural relation between Macdonald polynomials and refined local orbifold curve counting invariants. The string theoretic approach also leads to a new spectral cover construction for parabolic Higgs bundles in terms of holomorphic symplectic orbifolds.

Chuang, Wu-yen; Donagi, Ron; Pantev, Tony

2013-01-01T23:59:59.000Z

168

Final Report on the Safety Assessment of Aluminum Silicate, Calcium Silicate, Magnesium Aluminum  

E-Print Network (OSTI)

Final Report on the Safety Assessment of Aluminum Silicate, Calcium Silicate, Magnesium Aluminum Silicate, Magnesium Silicate, Magnesium Trisilicate, Sodium Magnesium Silicate, Zirconium Silicate, Attapulgite, Bentonite, Fuller's Earth, Hectorite, Kaolin, Lithium Magnesium Silicate, Lithium Magnesium

Ahmad, Sajjad

169

Genealogy of major U.S. refiners - Energy Information Administration  

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

See full Genealogy of Major U.S. Refiners Previous Release Genealogy of Major U.S. Refiners Genealogy of Major U.S. Refiners Release date: September 18, 2013 figre 1. World energy consumption, 1990-2040. The structure of the U.S. petroleum refining industry has changed substantially over the past several years. In the diagram the companies shown on the right side are presently active in U.S. refining. The transactions over the past 25 years that created these companies also are shown. The transactions included here may be as little as a single refinery, or as much as all the refining assets of the parties to the transaction. Transactions that include less than all refining assets are indicated by vertical dotted lines while vertical solid lines indicate that all refining assets are included. Additionally,

170

Grain Refinement of Permanent Mold Cast Copper Base Alloys  

SciTech Connect

Grain refinement is a well established process for many cast and wrought alloys. The mechanical properties of various alloys could be enhanced by reducing the grain size. Refinement is also known to improve casting characteristics such as fluidity and hot tearing. Grain refinement of copper-base alloys is not widely used, especially in sand casting process. However, in permanent mold casting of copper alloys it is now common to use grain refinement to counteract the problem of severe hot tearing which also improves the pressure tightness of plumbing components. The mechanism of grain refinement in copper-base alloys is not well understood. The issues to be studied include the effect of minor alloy additions on the microstructure, their interaction with the grain refiner, effect of cooling rate, and loss of grain refinement (fading). In this investigation, efforts were made to explore and understand grain refinement of copper alloys, especially in permanent mold casting conditions.

M.Sadayappan; J.P.Thomson; M.Elboujdaini; G.Ping Gu; M. Sahoo

2005-04-01T23:59:59.000Z

171

Hardware/Software Co-Design via Specification Refinement  

E-Print Network (OSTI)

. The Rosetta refinement capability extends this by allowing a system's functional behavior and its implementation details to be described separately. The Rosetta Refinement Tool combines the functional behavior and the implementation details to form a system...

Peck, Wesley Graham

2011-12-31T23:59:59.000Z

172

5.841 Crystal Structure Refinement, Fall 2006  

E-Print Network (OSTI)

This course in crystal structure refinement examines the practical aspects of crystal structure determination from data collection strategies to data reduction and basic and advanced refinement problems of organic and ...

Mueller, Peter

173

5.067 Crystal Structure Refinement, Fall 2007  

E-Print Network (OSTI)

This course in crystal structure refinement examines the practical aspects of crystal structure determination from data collection strategies to data reduction and basic and advanced refinement problems of organic and ...

Mueller, Peter

174

Verification of microarchitectural refinements in rule-based systems  

E-Print Network (OSTI)

Microarchitectural refinements are often required to meet performance, area, or timing constraints when designing complex digital systems. While refinements are often straightforward to implement, it is difficult to formally ...

Dave, Nirav H.

175

Nd:YAG laser welding aluminum alloys  

SciTech Connect

Autogenous Nd:YAG laser welding wrought 4047, 1100, 3003, 2219, 5052, 5086, 5456, and 6061 and cast A356 aluminum alloys to cast A356 aluminum alloy in restrained annular weld joints was investigated. The welds were 12.7 mm (0.375 in.) and 9.5 mm (0.375 in.) diameter with approximately 0.30 mm (0.012 in.) penetration. This investigation determined 4047 aluminum alloy to be the optimum alloy for autogenous Nd:YAG laser welding to cast A356 aluminum alloy. This report describes the investigation and its results.

Jimenez, E. Jr.

1992-02-01T23:59:59.000Z

176

Aluminum-stabilized NB3SN superconductor  

DOE Patents (OSTI)

An aluminum-stabilized Nb.sub.3 Sn superconductor and process for producing same, utilizing ultrapure aluminum. Ductile components are co-drawn with aluminum to produce a conductor suitable for winding magnets. After winding, the conductor is heated to convert it to the brittle Nb.sub.3 Sn superconductor phase, using a temperature high enough to perform the transformation but still below the melting point of the aluminum. This results in reaction of substantially all of the niobium, while providing stabilization and react-in-place features which are beneficial in the fabrication of magnets utilizing superconducting materials.

Scanlan, Ronald M. (Livermore, CA)

1988-01-01T23:59:59.000Z

177

Activated Aluminum Hydride Hydrogen Storage Compositions - Energy...  

NLE Websites -- All DOE Office Websites (Extended Search)

Hydrogen and Fuel Cell Find More Like This Return to Search Activated Aluminum Hydride Hydrogen Storage Compositions Brookhaven National Laboratory Contact BNL About This...

178

Error estimation and adaptive mesh refinement for aerodynamic flows  

E-Print Network (OSTI)

Error estimation and adaptive mesh refinement for aerodynamic flows Ralf Hartmann, Joachim Held-oriented mesh refinement for single and multiple aerodynamic force coefficients as well as residual-based mesh refinement applied to various three-dimensional lam- inar and turbulent aerodynamic test cases defined

Hartmann, Ralf

179

Manganese-Aluminum-Based Magnets: Nanocrystalline t-MnAI Permanent Magnets  

SciTech Connect

REACT Project: Dartmouth is developing specialized alloys with magnetic properties superior to the rare earths used in today’s best magnets. EVs and renewable power generators typically use rare earths to turn the axles in their electric motors due to the magnetic strength of these minerals. However, rare earths are difficult and expensive to refine. Dartmouth will swap rare earths for a manganese-aluminum alloy that could demonstrate better performance and cost significantly less. The ultimate goal of this project is to develop an easily scalable process that enables the widespread use of low-cost and abundant materials for the magnets used in EVs and renewable power generators.

None

2012-01-01T23:59:59.000Z

180

iCons, 2011 Alzheimers and Aluminum: Lesson Plan  

E-Print Network (OSTI)

© iCons, 2011 Alzheimers and Aluminum: Lesson Plan Handouts to explore mechanistic link between Alzheimer's and aluminum 5. Brief proposal expanding Points to Aluminum's Link With Alzheimer's Disease" from 1989. Provide handout

Auerbach, Scott M.

Note: This page contains sample records for the topic "aluminum alumina refining" 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

High-temperature oxidation of an alumina-coated Ni-base alloy  

SciTech Connect

Alumina coatings were applied to Ni-20Cr (wt%) using combustion chemical vapor deposition (combustion CVD). Combustion CVD is an open air deposition technique performed in a flame. The oxidation kinetics of coated and uncoated specimens were measured by isothermal oxidation tests carried out in pure flowing air at temperatures of 800, 900, 1,000 and 1,100 C. The alumina coatings reduced the oxidation kinetics at all temperatures. The morphologies and compositions of the alumina coatings were characterized by transmission and scanning electron microscopy, energy dispersive x-ray spectroscopy and x-ray photoelectron spectroscopy.

Hendrick, M.R.; Hampikian, J.M.; Carter, W.B.

1996-06-01T23:59:59.000Z

182

DOE - Office of Legacy Management -- Hunter Douglas Aluminum...  

Office of Legacy Management (LM)

Hunter Douglas Aluminum Plant Div of Bridgeport Brass Co - CA 11 FUSRAP Considered Sites Site: HUNTER DOUGLAS ALUMINUM PLANT, DIV. OF BRIDGEPORT BRASS CO. (CA.11 ) Eliminated from...

183

Magnesium Replacement of Aluminum Cast Components in a Production...  

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

Magnesium Replacement of Aluminum Cast Components in a Production V6 Engine to Effect Cost-Effective Mass Reduction Magnesium Replacement of Aluminum Cast Components in a...

184

ALUMINUM DISTRIBUTIONSIN THE EURASIAN BASIN OF THE ARCTIC OCEAN  

E-Print Network (OSTI)

ALUMINUM DISTRIBUTIONSIN THE EURASIAN BASIN OF THE ARCTIC OCEAN A THESISSUBMITTEDTO THE GRADUATE Section(1994)cruiseswere analyzed for their aluminum (Al) content; these two data setswere then combined

Luther, Douglas S.

185

Low-Cost Direct Bonded Aluminum (DBA) Substrates | Department...  

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

Aluminum (DBA) Substrates Low-Cost Direct Bonded Aluminum (DBA) Substrates 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and...

186

Ultrahigh-Efficiency Aluminum Production Cells | Department of...  

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

Ultrahigh-Efficiency Aluminum Production Cells Ultrahigh-Efficiency Aluminum Production Cells ultrahi-effaluminum.pdf More Documents & Publications U.S. Energy Requirements for...

187

Computational Design of Ferritic-Alumina-Strengthened Alloys  

NLE Websites -- All DOE Office Websites (Extended Search)

304-285-4721 robert.romanosky@netl.doe.gov Patricia a. Rawls Project Manager National Energy Technology Laboratory 626 Cochrans Mill Road P.O. Box 10940 Pittsburgh, PA 15236-0940 412-386-5882 patricia.rawls@netl.doe.gov Peter K. Liaw (Principal Investigator), chain t. Liu University of Tennessee - Knoxville 427-B Dougherty Engineering Building Department of Materials Science & Engineering Knoxville, TN 37996-2200 865-974-6356, 865-974-5567 pliaw@utk.edu, liuct@ornl.gov Computational Design of ferritiC- alumina-strengtheneD alloys Description Innovative, high-temperature, corrosion-resistant materials are critical to improving efficiency and lowering emissions of advanced turbine power generation systems - key elements in the development of new coal-based energy systems. Through its

188

Reactive Spreading of a Lead-Free Solder on Alumina  

SciTech Connect

The wetting of Sn3Ag-based alloys on Al{sub 2}O{sub 3} has been studied using the sessile-drop configuration. Small additions of Ti decrease the contact angle of Sn3Ag alloys on alumina from 115 to 23 degrees. Adsorption of Ti-species at the solid-liquid interface prior to reaction is the driving force for the observed decrease in contact angle, and the spreading kinetics is controlled by the kinetics of Ti dissolution into the molten alloy. The addition of Ti increases the transport rates at the solid-liquid interface, resulting in the formation of triple-line ridges that pin the liquid front and promote a wide variability in the final contact angles.

Gremillard, L.; Saiz, E.; Radmilovic, V.R.; Tomsia, A.P.

2005-12-01T23:59:59.000Z

189

Climate VISION: Private Sector Initiatives: Aluminum  

Office of Scientific and Technical Information (OSTI)

Letters of Intent/Agreements Letters of Intent/Agreements Aluminum Association Logo The Aluminum Association and its members participating in the Voluntary Aluminum Industry Partnership (VAIP), representing 98% of primary aluminum production in the United States, have committed under the Climate VISION program to a direct carbon intensity reduction of emissions of perfluorocarbons (PFCs) and of emissions of CO2 from the consumption of the carbon anode from the primary aluminum reduction process. The Climate VISION target is a 53% total carbon equivalent reduction from these sources by 2010 from 1990 levels. The industry has been working to reduce greenhouse gas emissions for over a decade and this new commitment equates to an additional direct carbon-intensity reduction of 65% since 2000. As a

190

Gating of Permanent Molds for ALuminum Casting  

SciTech Connect

This report summarizes a two-year project, DE-FC07-01ID13983 that concerns the gating of aluminum castings in permanent molds. The main goal of the project is to improve the quality of aluminum castings produced in permanent molds. The approach taken was determine how the vertical type gating systems used for permanent mold castings can be designed to fill the mold cavity with a minimum of damage to the quality of the resulting casting. It is evident that somewhat different systems are preferred for different shapes and sizes of aluminum castings. The main problems caused by improper gating are entrained aluminum oxide films and entrapped gas. The project highlights the characteristic features of gating systems used in permanent mold aluminum foundries and recommends gating procedures designed to avoid common defects. The study also provides direct evidence on the filling pattern and heat flow behavior in permanent mold castings.

David Schwam; John F. Wallace; Tom Engle; Qingming Chang

2004-03-30T23:59:59.000Z

191

CATALYTIC CONVERSION OF SOLVENT REFINED COAL TO LIQUID PRODUCTS  

E-Print Network (OSTI)

aluminum were all performed by atomic absorption in a PerkinElmer Model 360 Atomic Absorption Spectrophotometer. Samplesvolume and run on the atomic absorption spectrophotometer.

Tanner, K.I.

2010-01-01T23:59:59.000Z

192

PREDICTION OF LOW-CYCLE FATIGUE-LIFE BY ACOUSTIC EMISSION. PART 1: 2024-T3 ALUMINUM ALLOY PART 2: ALCLAD 7075-T6/ ALUMINUM ALLOY  

E-Print Network (OSTI)

low-cycle fatigue life of Aluminum sheet alloys by acoustictoughness of structural aluminum alloys. Fracture . Fracturetoughness of structural aluminum alloys, Eng. Fracture Mech.

Baram, J.

2013-01-01T23:59:59.000Z

193

Effective parameters in axial injection suspension plasma spray process of alumina-zirconia ceramics  

E-Print Network (OSTI)

Effective parameters in axial injection suspension plasma spray process of alumina- zirconia phases using extra small particles as compared to conventional thermal spraying. Suspension spraying% yittria stabilized zirconia was deposited by axial injection SPS process. The effects of principal

Medraj, Mamoun

194

E-Print Network 3.0 - alumina-on-polyethylene bearing surfaces...  

NLE Websites -- All DOE Office Websites (Extended Search)

on-polyethylene bearing surfaces Search Powered by Explorit Topic List Advanced Search Sample search results for: alumina-on-polyethylene bearing surfaces Page: << < 1 2 3 4 5 > >>...

195

Ammoniated silica-alumina gel and catalyst containing the same and processes for producing same  

SciTech Connect

This invention relates to hydrothermally treated silica-alumina cogels resulting in a reduction in the NH/sub 4/ content of the gel and the employment of such gels as cracking catalysts.

Alafandi, H.; Stamires, D.

1980-12-09T23:59:59.000Z

196

E-Print Network 3.0 - alumina-zirconia ceramic eutectic Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

(2,3), such as Zyttritp (yttria stabilized zirconia), alumina-zirconia... OF A1,0,-Tic CERAMIC BODIES BY THE ALKOXIDE PROCESS M. HOCH Department of Materials Science......

197

Effect of catalyst structure on oxidative dehydrogenation of ethane and propane on alumina-supported vanadia  

E-Print Network (OSTI)

catalysts: (a) ethane ODH, (b) propane ODH (663 K, 14 kPa CDehydrogenation of Ethane and Propane on Alumina-Supporteddehydrogenation of ethane and propane. UV-visible and Raman

Argyle, Morris D.; Chen, Kaidong; Bell, Alexis T.; Iglesia, Enrique

2001-01-01T23:59:59.000Z

198

Steel and Aluminum Energy Conservation and Technology Competitiveness Act of 1988. Fiscal year 1993 annual report  

SciTech Connect

The Steel and Aluminum Energy Conservation and Technology Competitiveness Act of 1988 (Act), commonly referred to as the Metals Initiative, was signed into law on November 17, 1988 (Public Law 100-680). The Act, 15 U.S.C. 5101 et seq., has tile following purposes: (1) to {open_quotes}increase the energy efficiency and enhance the competitiveness of American steel, aluminum, and copper industries{close_quotes}; and (2) to continue the research and development efforts begun under the Department of Energy (DOE) program known as the Steel Initiative. Section 8 of tile Act requires the Secretary of Energy to prepare an annual report to Congress describing the activities carried out under the Act during each fiscal year. 15 U.S.C. 5107 In addition, with respect to reports on fiscal years 1993, 1995, and 1997, Section 8 requires a complete summary of activities under the management plan and research plan from inception with an analysis of extent of their success in accomplishing the purposes of the Act. Id. The Metals Initiative is currently supporting six steel industry research and development projects: (1) Superplastic Steel Processing with Lawrence Livermore National Laboratory; (2) Direct Steelmaking with the American Iron and Steel Institute; (3) Electrochemical Dezincing of Steel Scrap with Argonne National Laboratory and Metal Recovery Industries (U.S.), Inc.; (4) Rapid Analysis of Molten Metals Using Laser Produced Plasmas with Lehigh University; (5) Direct Strip Casting using a single wheel caster with Armco, Inc.; and (6) Advanced Process Control, also with the American Iron and Steel Institute. At the close of the fiscal year, a seventh project, Waste Oxide Recycling with the American Iron and Steel Institute, was selected for inclusion in the Direct Steelmaking project. There are three projects with the aluminum industry. The first, Wettable Cathodes for Alumina Reduction Cells with the Reynolds Metals Company, continues from the prior periods.

Not Available

1994-09-01T23:59:59.000Z

199

Characterization of porous GASAR aluminum  

SciTech Connect

Experimental and numerical analyses were performed on porous aluminum samples to evaluate microstructure and mechanical properties. Experiments considered of tensile tests on dog-bone specimens containing 9 to 17% porosity, which were instrumented with axial and transverse extensometers. Properties measured included Young`s modulus, Poisson`s ratio remained constant with porosity., For the numerical simulations, 3-D, mesoscale, multilayer models were constructed to evaluate the effects of pore morphology and interactions on material properties. The models allowed systematic spatial positioning of the pore within the cell and the ability to form solid zones. Pore arrangement, the effect of constraint, and gradients on the stress state were investigated. By using different combinations of hex cells as building blocks, several complicated microstructural arrangements were simulated.

Bonenberger, R.J. [FM Technologies, Inc., Fairfax, VA (United States); Kee, A.J. [Geo-Centers, Inc., Fort Washington, MD (United States); Everett, R.K.; Matic, P. [Naval Research Lab., Washington, DC (United States)

1998-12-31T23:59:59.000Z

200

The role of alumina on performance of alkali-activated slag paste exposed to 50 °C  

SciTech Connect

The strength and microstructural evolution of two alkali-activated slags, with distinct alumina content, exposed to 50 °C have been investigated. These two slags are ground-granulated blast furnace slag (containing 13% (wt.) alumina) and phosphorous slag (containing 3% (wt.) alumina). They were hydrated in the presence of a combination of sodium hydroxide and sodium silicate solution at different ratios. The microstructure of the resultant slag pastes was assessed by X-ray diffraction, differential thermogravimetric analysis, and scanning electron microscopy. The results obtained from these techniques reveal the presence of hexagonal hydrates: CAH{sub 10} and C{sub 4}AH{sub 13} in all alkali-activated ground-granulated blast-furnace slag pastes (AAGBS). These hydrates are not observed in pastes formed by alkali-activated ground phosphorous slag (AAGPS). Upon exposure to 50 °C, the aforementioned hydration products of AAGBS pastes convert to C{sub 3}AH{sub 6}, leading to a rapid deterioration in the strength of the paste. In contrast, no strength loss was detected in AAGPS pastes following exposure to 50 °C. -- Highlights: •Strength of alkali-activated slag (AAS) pastes after exposure to 50 °C is studied. •AAS pastes with high alumina content lose strength after the exposure. •C{sub 4}AH{sub 13} and CAH{sub 10} form in these AAS pastes. •Conversion of these calcium alumina hydrates is associated with the strength loss. •AAS pastes with low alumina content maintain its strength after the exposure.

Jambunathan, N. [Department of Civil Engineering, Monash University, Clayton, Victoria 3800 (Australia)] [Department of Civil Engineering, Monash University, Clayton, Victoria 3800 (Australia); Sanjayan, J.G. [Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, Victoria (Australia)] [Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, Victoria (Australia); Pan, Z., E-mail: zhu.pan@monash.edu [Department of Civil Engineering, Monash University, Clayton, Victoria 3800 (Australia); Li, G. [School of Mechanical and Chemical Engineering, The University of Western Australia, Crawley, WA 6009 (Australia)] [School of Mechanical and Chemical Engineering, The University of Western Australia, Crawley, WA 6009 (Australia); Liu, Y. [School of Geosciences and Info-Physics, Central South University, Changsha 410083 (China)] [School of Geosciences and Info-Physics, Central South University, Changsha 410083 (China); Korayem, A.H.; Duan, W.H.; Collins, F. [Department of Civil Engineering, Monash University, Clayton, Victoria 3800 (Australia)] [Department of Civil Engineering, Monash University, Clayton, Victoria 3800 (Australia)

2013-12-15T23:59:59.000Z

Note: This page contains sample records for the topic "aluminum alumina refining" 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

Renewable Energy Project Refinement Webinar | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Renewable Energy Project Refinement Webinar Renewable Energy Project Refinement Webinar Renewable Energy Project Refinement Webinar May 28, 2014 11:00AM MDT Attendees will become familiar with the three components of project refinement: project financing strategies, off-taker agreements, and vendor selection. Project refinement obstacles, particularly financing, can deter the deployment of renewable energy projects on tribal lands. Attendees will learn about the financial resources and ownership options available-including venture capital and innovative financing-that can help Tribes overcome longstanding barriers and attract higher levels of private investment. Finally, attendees will learn how project refinement can accelerate renewable energy development and, with it, tribal economic and community development. There is no cost to attend the webinar, but

202

A CSP Account of Event-B Refinement  

E-Print Network (OSTI)

Event-B provides a flexible framework for stepwise system development via refinement. The framework supports steps for (a) refining events (one-by-one), (b) splitting events (one-by-many), and (c) introducing new events. In each of the steps events can moreover possibly be anticipated or convergent. All such steps are accompanied with precise proof obligations. Still, it remains unclear what the exact relationship - in terms of a behaviour-oriented semantics - between an Event-B machine and its refinement is. In this paper, we give a CSP account of Event-B refinement, with a treatment for the first time of splitting events and of anticipated events. To this end, we define a CSP semantics for Event-B and show how the different forms of Event-B refinement can be captured as CSP refinement.

Schneider, Steve; Wehrheim, Heike; 10.4204/EPTCS.55.9

2011-01-01T23:59:59.000Z

203

Quick Plastic Forming of Aluminum Sheet Metal  

NLE Websites -- All DOE Office Websites (Extended Search)

General Motors' President North America, Gary Cowger, General Motors' President North America, Gary Cowger, reviews the 2004 Chevy Malibu Maxx after introducing it to the media at the New York Auto Show. (photo courtesy of General Motors) Quick Plastic Forming of Aluminum Sheet Metal Background Aluminum automotive components made using a hot blow forming process are reducing vehicle weight and increasing the fuel efficiency of today's cars. However, before General Motors (GM) and the U.S. Department of Energy (DOE) sponsored research in this technol- ogy, blow forming of aluminum was not a viable process for automakers. The prior blow forming process,

204

Formulation and method for preparing gels comprising hydrous aluminum oxide  

SciTech Connect

Formulations useful for preparing hydrous aluminum oxide gels contain a metal salt including aluminum, an organic base, and a complexing agent. Methods for preparing gels containing hydrous aluminum oxide include heating a formulation to a temperature sufficient to induce gel formation, where the formulation contains a metal salt including aluminum, an organic base, and a complexing agent.

Collins, Jack L.

2014-06-17T23:59:59.000Z

205

Aluminum hydroxide and hydrogen produced by water electrolysis  

Science Journals Connector (OSTI)

Thermodynamic and kinetic peculiarities of the water electrolysis in a reactor with aluminum electrodes are...

R. R. Salem

2009-11-01T23:59:59.000Z

206

ALUMINUM--2001 6.1 By Patricia A. Plunkert  

E-Print Network (OSTI)

ALUMINUM--2001 6.1 ALUMINUM By Patricia A. Plunkert Domestic survey data and tables were prepared, international data coordinator. In 2001, 11 domestic companies operated 23 primary aluminum reduction plants in the Pacific Northwest, and low metal prices led several aluminum smelters to continue to reduce production

207

ALUMINUM--1998 5.1 By Patricia A. Plunkert  

E-Print Network (OSTI)

ALUMINUM--1998 5.1 ALUMINUM By Patricia A. Plunkert Domestic survey data and tables were prepared, international data coordinator. In 1998, 13 domestic companies operated 23 primary aluminum reduction plants to be $5.4 billion. Aluminum recovered from purchased scrap decreased to approximately 3.4 million tons

208

ALUMINUM--1999 5.1 By Patricia A. Plunkert  

E-Print Network (OSTI)

ALUMINUM--1999 5.1 ALUMINUM By Patricia A. Plunkert Domestic survey data and tables were prepared, international data coordinator. In 1999, 12 domestic companies operated 23 primary aluminum reduction plants to be $5.5 billion. During the year, two proposed mergers that involved five major aluminum companies were

209

ALUMINUM--2000 6.1 By Patricia A. Plunkert  

E-Print Network (OSTI)

ALUMINUM--2000 6.1 ALUMINUM By Patricia A. Plunkert Domestic survey data and tables were prepared, international data coordinator. In 2000, 12 domestic companies operated 23 primary aluminum reduction plants to be $6 billion. Increased energy costs, particularly in the Pacific Northwest, led several aluminum

210

UNIVERSITY of CALIFORNIA ATOMIC LAYER DEPOSITION OF ALUMINUM OXIDE  

E-Print Network (OSTI)

UNIVERSITY of CALIFORNIA SANTA CRUZ ATOMIC LAYER DEPOSITION OF ALUMINUM OXIDE A thesis submitted deposition (ALD) of aluminum oxide on crystalline silicon and anodized aluminum substrates. A homemade ALD system is used with trimethylaluminum (TMA) and water as precursors to deposit uniform aluminum oxide

Belanger, David P.

211

Refinement of synchroton spectral tip calculations  

Science Journals Connector (OSTI)

Refinements in the computing techniques were performed in the calculation of transition rates to the ground and first excited states in magnetic bremsstrahlung via the use of exact matrix elements. The above calculations were carried out to double precision on a UNIVAC 1108 computer as was the calculation of transition rates to the second excited state. Empirical formulas are given for the transition rates from arbitrary upper states to the ground state, first excited state, and the second excited state for arbitrary magnetic field strengths. In addition the relative probabilities of transitions from level three to the remaining three lower levels is investigated in detail in the vicinity of the quantum-mechanical critical field, and the spectral tip structure for an electron in state n?1 is viewed in this high-field regime.

D. White

1978-09-15T23:59:59.000Z

212

Renewable Energy Financial Instruments Guidance Tool (REFINe) | Open Energy  

Open Energy Info (EERE)

Renewable Energy Financial Instruments Guidance Tool (REFINe) Renewable Energy Financial Instruments Guidance Tool (REFINe) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Renewable Energy Financial Instruments Guidance Tool (REFINe) Focus Area: Renewable Energy Topics: Policy Impacts Website: web.worldbank.org/WBSITE/EXTERNAL/TOPICS/EXTENERGY2/0,,contentMDK:2298 Equivalent URI: cleanenergysolutions.org/content/renewable-energy-financial-instrument Language: English Policies: "Deployment Programs,Financial Incentives" is not in the list of possible values (Deployment Programs, Financial Incentives, Regulations) for this property. DeploymentPrograms: Training & Education Renewable Energy Financial Instruments Guidance Tool (REFINe) aims to assist policy in identifying appropriate financial instruments to scale-up

213

Petroleum Products Table 43. Refiner Motor Gasoline Volumes...  

Gasoline and Diesel Fuel Update (EIA)

by Grade, Sales Type, PAD District, and State 262 Energy Information Administration Petroleum Marketing Annual 1996 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type,...

214

Petroleum Products Table 43. Refiner Motor Gasoline Volumes...  

Gasoline and Diesel Fuel Update (EIA)

by Grade, Sales Type, PAD District, and State 262 Energy Information Administration Petroleum Marketing Annual 1997 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type,...

215

,"U.S. Total Refiner Petroleum Product Prices"  

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

NUSDPG","EMAEPPRLPWGNUSDPG","EMAEPPRHPWGNUSDPG" "Date","U.S. Total Gasoline WholesaleResale Price by Refiners (Dollars per Gallon)","U.S. Aviation Gasoline Wholesale...

216

Table 19. U.S. Refiner Residual Fuel Oil Prices  

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

Prices," source for backcast estimates prior to January 1983. 19. U.S. Refiner Residual Fuel Oil Prices 36 Energy Information Administration Petroleum Marketing Annual 1996...

217

Table 19. U.S. Refiner Residual Fuel Oil Prices  

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

Prices," source for backcast estimates prior to January 1983. 19. U.S. Refiner Residual Fuel Oil Prices 36 Energy Information Administration Petroleum Marketing Annual 1997...

218

Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...  

Gasoline and Diesel Fuel Update (EIA)

Information AdministrationPetroleum Marketing Annual 1998 Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State (Thousand Gallons per...

219

Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...  

Annual Energy Outlook 2012 (EIA)

Information Administration Petroleum Marketing Annual 1995 Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon Excluding...

220

Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...  

Annual Energy Outlook 2012 (EIA)

Information AdministrationPetroleum Marketing Annual 1999 Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State (Thousand Gallons per...

Note: This page contains sample records for the topic "aluminum alumina refining" 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

Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...  

Annual Energy Outlook 2012 (EIA)

- - - - W W - - - - - - See footnotes at end of table. 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State 292 Energy Information...

222

Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...  

Annual Energy Outlook 2012 (EIA)

Information AdministrationPetroleum Marketing Annual 1999 Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon Excluding...

223

Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...  

Gasoline and Diesel Fuel Update (EIA)

Information Administration Petroleum Marketing Annual 1995 Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State (Thousand Gallons per...

224

Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...  

Annual Energy Outlook 2012 (EIA)

Information AdministrationPetroleum Marketing Annual 1998 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per Day) -...

225

Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...  

Gasoline and Diesel Fuel Update (EIA)

Information AdministrationPetroleum Marketing Annual 1998 Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon Excluding...

226

Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...  

Annual Energy Outlook 2012 (EIA)

Information Administration Petroleum Marketing Annual 1995 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per Day) -...

227

Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...  

Gasoline and Diesel Fuel Update (EIA)

Information AdministrationPetroleum Marketing Annual 1999 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per Day) -...

228

Synthesis of nanocrystalline aluminum matrix composites reinforced with in situ devitrified Al-Ni-La amorphous particles  

E-Print Network (OSTI)

of nanocrystalline aluminum matrix composites reinforcedAbstract Nanocrystalline aluminum matrix composites wereamount of nanoscale aluminum oxide, nitride and carbide

Zhang, Zhihui H; Han, B Q; Witkin, D; Ajdelsztajn, L; Laverna, E J

2006-01-01T23:59:59.000Z

229

Effect of polymer molecular weight on the absorption of polyacrylic acid at the alumina-water interface  

Science Journals Connector (OSTI)

The absorption and electrokinetic characteristics of alumina suspensions in the presence of polyacrylic acid as a dispersant have been studied. The adsorption isotherms exhibit high-affinity Langmuirian behaviour. The adsorption density decreases with increasing in pH, while it increases with increasing molecular weight of the polymer. Electrokinetic studies indicate specific adsorption at and above the isoelectric point of the alumina sample. Possible mechanisms of interaction between alumina and polyacrylic acid are discussed.

D. Santhiya; G. Nandini; S. Subramanian; K.A. Natarajan; S.G. Malghan

1998-01-01T23:59:59.000Z

230

Aluminum (Al) Etch Instructions The CEPSR cleanroom stores Aluminum Etchant Type A, a pre-made product used for  

E-Print Network (OSTI)

Aluminum (Al) Etch Instructions The CEPSR cleanroom stores Aluminum Etchant Type A, a pre-made product used for removing or etching away aluminum. This etchant is stored inside the acid or corrosive a specific thickness of aluminum that is desired. Note: Once the bottle is empty or you find that it's etch

Kim, Philip

231

ITP Aluminum: Energy and Environmental Profile of the U.S. Aluminum Industry  

Energy.gov (U.S. Department of Energy (DOE))

This detailed report benchmarks the energy and environmental characteristics of the key technologies used in the major processes of the aluminum industry.

232

ITP Aluminum: Aluminum Industry Vision: Sustainable Solutions for a Dynamic World  

Energy.gov (U.S. Department of Energy (DOE))

The Aluminum Vision is intended to stimulate a wide variety of R&D activities to accelerate technology development throughout industry.

233

Corrosion performance of aluminum in coal railcars  

SciTech Connect

Aluminum has been used for construction of coal railcars and on an experimental basis as a metallized coating over steel railcars. When aluminum is used in areas which contact the lading, resistance to general corrosion has been outstanding. Galvanic corrosion of joints which connect the aluminum to a steel undercarriage has not been a problem provided appropriate measures were taken during vehicle construction. Laboratory test data are presented which illustrate the impact of variations in joint preparation on galvanic corrosion performance. Painting the steel and the use of a sealant are recommended to obtain satisfactory long term joint performance. The corrosion performance and long term durability of an aluminum metallized coating has been demonstrated when applied to new cars constructed of carbon steel. Test results of coating durability when applied to cars constructed of constructed of weathering steel or carbon steel which were in revenue coal service prior to coating have been mixed.

Hersh, J.F.

1988-01-01T23:59:59.000Z

234

UV Curable Coatings in Aluminum Can Production  

E-Print Network (OSTI)

based coatings. The Coors Brewing Company Can Manufacturing Plant has been utilizing this technology in full scale aluminum can production since 1975, and therefore has had the opportunity to evaluate practical operations of the UV technology...

Donhowe, E. T.

235

Densification of nanosized alumina powders by hot isostatic pressing (HIP)  

SciTech Connect

The densification of nanosized alumina powders to compacts of nearly theoretical density by Hot Isostatic Pressing was the aim of this work. Three types of powders produced by the so called exploding wire technique in the mesh size between 20 to 80 nm were used. Because of the big internal friction during dry pressing the densities achieved were only in the range of about 30% TD. Therefore it was necessary to use a second post densification step by cold isostatic pressing (CIP). With pressures as high as 750 MPa the authors received a density of 58% TD. The pellets were sealed in capsules of stainless steel which were densified at different temperatures between 900 C and 1,350 C with pressures between 120 and 300 MPa. The resulting compacts were examined by scanning electron microscopy. The resulting phases were determined by X-ray diffraction. Grain size measurement at the as fabricated compacts was a decisive criterion for the success of the experiments.

Weimar, P.; Knitter, R.; Szabo, D.V. [Forschungszentrum, Karlsruhe (Germany); Krauss, W.

1996-12-31T23:59:59.000Z

236

An optimal replacement problem in aluminum production  

E-Print Network (OSTI)

The aluminum production facility operated by ALCOA in Rockdale, Texas produces aluminum in a continuous manufacturing environment using steel carbon-lined smelting pots. As a result of the production process of running electricity through an electrolytic... technique known as dynamic programming, the minimum expected cost can be determined for a finite horizon Markov decision problem. This was accomplished using value iteration, a computer program written in C language, and data obtained from ALCOA...

Spanks, Lisa Marie

1992-01-01T23:59:59.000Z

237

11 California Petroleum Supply, Transportation, Refining and Marketing Trends  

E-Print Network (OSTI)

11 California Petroleum Supply, Transportation, Refining and Marketing Trends Chapter 2 CALIFORNIA PETROLEUM SUPPLY, TRANSPORTATION, REFINING AND MARKETING TRENDS INTRODUCTION California is an integral part of the world oil market as a world-scale petroleum consumer. Historically, about 50 percent of this petroleum

238

fCourse: Learn to Swim Level 5: Stroke Refinement  

E-Print Network (OSTI)

fCourse: Learn to Swim Level 5: Stroke Refinement Purpose To further learn how to coordinate and refine strokes Prerequisites Valid American Red Cross Learn-to-Swim Level 4: Fundamental Aquatic Skills Shallow-angle dive from the side then glide and begin a front stroke Tuck and pike surface dives, submerge

Hemmers, Oliver

239

On Adaptive Mesh Refinement for Atmospheric Pollution Models  

E-Print Network (OSTI)

On Adaptive Mesh Refinement for Atmospheric Pollution Models Emil M. Constantinescu and Adrian Springer-Verlag Berlin Heidelberg 2005 #12;On Adaptive Mesh Refinement for Atmospheric Pollution Models 799 res- olution system for modeling regional air pollution based on the chemical transport model STEM

Sandu, Adrian

240

Refining Landscape Change Models through Outlier Analysis in the  

E-Print Network (OSTI)

Refining Landscape Change Models through Outlier Analysis in the Muskegon Watershed of Michigan significantly to the state economy, accounting for nearly 20% of its economic output (Michigan Land Use, 1965; Lee, 1973; Wegener, 1994), and model refinement/advancement, in large part due to advances

Walker, Robert T.

Note: This page contains sample records for the topic "aluminum alumina refining" 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

E-Print Network 3.0 - aluminum copper iron Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Aluminum alloy... to room temperature was also confirmed. Will investigate different additives, copper, pure aluminum... with aluminum ... Source: McDonald, Kirk - Department...

242

A NEW A15 MULTIFILAMENTARY SUPERCONDUCTOR BASED ON THE NIOBIUM-ALUMINUM-SILICON SYSTEM  

E-Print Network (OSTI)

BASED ON THE NIOBIUM-ALUMINUM-SILICON SYSTEM Gary C. Quinnpsi. Photomicrograph of an Aluminum-Silicon eutectic filledmultifilimentary niobium-aluminum-silicon wire, a) sample #

Quinn, G.C.

2011-01-01T23:59:59.000Z

243

EFFECT OF GRAIN SIZE ON THE ACOUSTIC EMISSION GENERATED DURING PLASTIC DEFORMATION OF ALUMINUM  

E-Print Network (OSTI)

PLASTIC DEFORMATION OF ALUMINUM LAWRENCE BERKELEY LABORATORYDURING PLASTIC DEFORMATION OF ALUMINUM J. Baram Materialsof polycrystalline aluminum, of different grain sizes and at

Baram, J.

2013-01-01T23:59:59.000Z

244

Aluminum and copper in drinking water enhance inflammatory oroxidative events specifically in the brain  

E-Print Network (OSTI)

effects of iron and aluminum on stress-related genelopathy syndrome. Possible aluminum intoxication. N. Engl.Chronic exposure to aluminum in drinking water increases

Bondy, Stephen Bondy C

2006-01-01T23:59:59.000Z

245

Mechanical properties and microstructures of dual phase steels containing silicon, aluminum and molybdenum  

E-Print Network (OSTI)

STEELS CONTAINING SILICON, ALUMINUM AND MOLYBDENUM Thomasdeoxidizing action of aluminum results in grain refinementquench martensite, Both (a) and Aluminum particle within the

Neill, Thomas John O'

2011-01-01T23:59:59.000Z

246

CHARACTERIZATION OF THE GASEOUS AND SOLID PRODUCTS OF DECOMPOSITION OF ALUMINUM SULFATE  

E-Print Network (OSTI)

OF DECOMPOSITION OF ALUMINUM SULFATE Gary F. Knutsen (M. S.OF DECOMPOSITION OF ALUMINUM SULFATE Contents Abstract . .OF DECOMPOSITION OF ALUMINUM SULFATE Gary F. Knutsen

Knutsen, G.F.

2010-01-01T23:59:59.000Z

247

A Study of Aluminum Dependent Root Growth Inhibition in Arabidopsis thaliana  

E-Print Network (OSTI)

symptom triggered by aluminum, but not the primary cause ofRI (1986) Characterization of hydroxy-aluminum solutionsby aluminum-27 nuclear magnetic resonance spectroscopy. Soil

Nezames, Cynthia

2011-01-01T23:59:59.000Z

248

Transcriptomic analysis reveals differential gene expression in common bean (Phaseoulus vulgaris) for aluminum resistance  

E-Print Network (OSTI)

transition zone is the most aluminum-sensitive apical rootsoils is mainly limited by aluminum toxicity. In addition,L. under conditions of aluminum stress. Plant Physiol 104:

Eticha, Dejene; Zahn, Marc; Rao, Idupulapati M.; Horst, Walter J.

2009-01-01T23:59:59.000Z

249

IMPROVED FORMABILITY OF ALUMINUM-GERMANIUM NEAR EUTECTIC COMPOSITIONS THROUGH THE APPLICATION OF SUPERPLASTICITY PRINCIPLES  

E-Print Network (OSTI)

IMPROVED FORMABILITY OF ALUMINUM-GERMANIUM NEAR EUTECTICIMPROVED FORMABILITY OF ALUMINUM-GERMANIUM NEAR EUTECTICAl-Ge) wire. Al-Ge «00F Aluminum-Germanium Atomic Percentage

Pech, G.J.

2011-01-01T23:59:59.000Z

250

Aluminum Microfoams for Reduced Fuel Consumption and Pollutant Emissions of Transportation Systems  

E-Print Network (OSTI)

on the foamability of Aluminum alloy . Journal of MaterialFoamability of particle reinforced Aluminum Melt. Ma. -wiss.particle-stabilised Aluminum foams . Advanced Engineering

Pilon, Laurent

2008-01-01T23:59:59.000Z

251

Refined BPS state counting from Nekrasov's formula and Macdonald functions  

E-Print Network (OSTI)

It has been argued that the Nekrasov's partition function gives the generating function of refined BPS state counting in the compactification of M theory on local Calabi-Yau spaces. We show that a refined version of the topological vertex we proposed before (hep-th/0502061) is a building block of the Nekrasov's partition function with two equivariant parameters. Compared with another refined topological vertex by Iqbal-Kozcaz-Vafa (hep-th/0701156), our refined vertex is expressed entirely in terms of the specialization of the Macdonald symmetric functions which is related to the equivariant character of the Hilbert scheme of points on C^2. We provide diagrammatic rules for computing the partition function from the web diagrams appearing in geometric engineering of Yang-Mills theory with eight supercharges. Our refined vertex has a simple transformation law under the flop operation of the diagram, which suggests that homological invariants of the Hopf link are related to the Macdonald functions.

Hidetoshi Awata; Hiroaki Kanno

2009-03-10T23:59:59.000Z

252

The response of mechanical and chemical pulps to refining  

SciTech Connect

This paper reports on theoretical equations describing the flow of pulp in refiners were used to analyze the experimental results obtained in a series of pilot plant trials. Western red cedar and loblolly pine wood chips were refined in 1-3 stages at rotational speeds of 1200 and 1800 rpm to produce thermomechanical pulps (TMP). Also, sulfate semibleached and low-yield sulfite pulps were refined at low (5%), medium (12%), and high (25%) consistency. The results indicate that the number of refining stages did not affect mechanical pulp quality. At a given specific energy, increasing the rotational speed increased the specific energy per impact and decreased the total number of impacts, resulting in a faster rate of fines generation for mechanical pulps. For chemical pulps higher pulp consistency produced gentler refining and yielded a higher rate of freeness decrease.

Miles, K.B.; Karnis, A. (Pulp and Paper Research Inst. of Canada, 570 St. John's Rd., Pointe Claire, Quebec H9R 3J9 (CA))

1991-01-01T23:59:59.000Z

253

The viability of aluminum Zintl anion moieties within magnesium-aluminum clusters  

SciTech Connect

Through a synergetic combination of anion photoelectron spectroscopy and density functional theory based calculations, we have investigated the extent to which the aluminum moieties within selected magnesium-aluminum clusters are Zintl anions. Magnesium-aluminum cluster anions were generated in a pulsed arc discharge source. After mass selection, photoelectron spectra of Mg{sub m}Al{sub n}{sup ?} (m, n = 1,6; 2,5; 2,12; and 3,11) were measured by a magnetic bottle, electron energy analyzer. Calculations on these four stoichiometries provided geometric structures and full charge analyses for the cluster anions and their neutral cluster counterparts, as well as photodetachment transition energies (stick spectra). Calculations revealed that, unlike the cases of recently reported sodium-aluminum clusters, the formation of aluminum Zintl anion moieties within magnesium-aluminum clusters was limited in most cases by weak charge transfer between the magnesium atoms and their aluminum cluster moieties. Only in cases of high magnesium content, e.g., in Mg{sub 3}Al{sub 11} and Mg{sub 2}Al{sub 12}{sup ?}, did the aluminum moieties exhibit Zintl anion-like characteristics.

Wang, Haopeng; Jae Ko, Yeon; Zhang, Xinxing; Gantefoer, Gerd; Bowen, Kit H., E-mail: kiran@mcneese.edu, E-mail: akandalam@wcupa.edu, E-mail: kbowen@jhu.edu [Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218 (United States); Schnoeckel, Hansgeorg [Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, 76128 Karlsruhe (Germany)] [Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, 76128 Karlsruhe (Germany); Eichhorn, Bryan W. [Department of Chemistry, University of Maryland, College Park, Maryland 20742 (United States)] [Department of Chemistry, University of Maryland, College Park, Maryland 20742 (United States); Jena, Puru [Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284 (United States)] [Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284 (United States); Kiran, Boggavarapu, E-mail: kiran@mcneese.edu, E-mail: akandalam@wcupa.edu, E-mail: kbowen@jhu.edu [Department of Chemistry, McNeese State University, Lake Charles, Louisiana 70609 (United States)] [Department of Chemistry, McNeese State University, Lake Charles, Louisiana 70609 (United States); Kandalam, Anil K., E-mail: kiran@mcneese.edu, E-mail: akandalam@wcupa.edu, E-mail: kbowen@jhu.edu [Department of Physics, West Chester University, West Chester, Pennsylvania 19383 (United States)

2014-03-28T23:59:59.000Z

254

JOURNAL OF SOLID STATE CHEMISTRY 65, 231-240 (1986) Synthesis of Di-and Trivalent /3"-Aluminas by Ion Exchange  

E-Print Network (OSTI)

diffusion is rapid within these quasi- two-dimensional regions, but many orders of magnitude slower between-, and trivalent cations in the periodic chart diffuse rapidly in the p"-alumina structure. /3"-Aluminas containing

Rohrer, Gregory S.

255

Oxidation kinetics of aluminum diboride  

SciTech Connect

The oxidation characteristics of aluminum diboride (AlB{sub 2}) and a physical mixture of its constituent elements (Al+2B) were studied in dry air and pure oxygen using thermal gravimetric analysis to obtain non-mechanistic kinetic parameters. Heating in air at a constant linear heating rate of 10 °C/min showed a marked difference between Al+2B and AlB{sub 2} in the onset of oxidation and final conversion fraction, with AlB{sub 2} beginning to oxidize at higher temperatures but reaching nearly complete conversion by 1500 °C. Kinetic parameters were obtained in both air and oxygen using a model-free isothermal method at temperatures between 500 and 1000 °C. Activation energies were found to decrease, in general, with increasing conversion for AlB{sub 2} and Al+2B in both air and oxygen. AlB{sub 2} exhibited O{sub 2}-pressure-independent oxidation behavior at low conversions, while the activation energies of Al+2B were higher in O{sub 2} than in air. Differences in the composition and morphology between oxidized Al+2B and AlB{sub 2} suggested that Al{sub 2}O{sub 3}–B{sub 2}O{sub 3} interactions slowed Al+2B oxidation by converting Al{sub 2}O{sub 3} on aluminum particles into a Al{sub 4}B{sub 2}O{sub 9} shell, while the same Al{sub 4}B{sub 2}O{sub 9} developed a needle-like morphology in AlB{sub 2} that reduced oxygen diffusion distances and increased conversion. The model-free kinetic analysis was critical for interpreting the complex, multistep oxidation behavior for which a single mechanism could not be assigned. At low temperatures, moisture increased the oxidation rate of Al+2B and AlB{sub 2}, but both appear to be resistant to oxidation in cool, dry environments. - Graphical abstract: Isothermal kinetic data for AlB{sub 2} in air, showing a constantly decreasing activation energy with increasing conversion. Model-free analysis allowed for the calculation of global kinetic parameters despite many simultaneous mechanisms occurring concurrently. (a) Time–temperature plots, (b) conversion as a function of time, (c) Arrhenius plots used to calculate activation energies, and (d) activation energy as a function of conversion. Display Omitted - Highlights: • First reported kinetic parameters for AlB{sub 2} and Al+2B oxidation in air and O{sub 2}. • Possible mechanism of enhanced boron combustion presented. • Moisture sensitivity shown to be problematic for AlB{sub 2}, less for Al+2B.

Whittaker, Michael L., E-mail: michaelwhittaker2016@u.northwestern.edu [Department of Materials Science and Engineering, University of Utah, 122S. Central Campus Drive, Salt Lake City, UT 84112 (United States); Sohn, H.Y. [Department of Metallurgical Engineering, University of Utah, 135S 1460 E, Rm 00412, Salt Lake City, UT 84112 (United States); Cutler, Raymond A. [Ceramatec, Inc., 2425S. 900W., Salt Lake City, UT 84119 (United States)

2013-11-15T23:59:59.000Z

256

Life Cycle Carbon Footprint of Re-Refined versus Base Oil That Is Not Re-Refined  

Science Journals Connector (OSTI)

The study showed that global warming potential was lower for all five re-refining techniques considered compared to the production of base oil in standard refineries. ... Safety-Kleen, the largest used oil re-refiner in North America, collects and re-refines used oil into approximately 100,000,000 gallons of base oil per year. ... Figure 4 presents the re-refined carbon footprint-based oil GHG emissions for re-refinery system yields of 50% (equivalent to two gallons of use over a gallon of base oil’s lifetime; 50% burden from virgin base oil input) to 100% (infinite re-refining; no burden from virgin base oil input). ...

Lisa N. Grice; Carolyn E. Nobel; Lin Longshore; Ramsay Huntley; Ashley L. DeVierno

2013-10-25T23:59:59.000Z

257

Changing System Interfaces Consistently: a New Refinement Strategy for CSP B  

E-Print Network (OSTI)

Changing System Interfaces Consistently: a New Refinement Strategy for CSP B Steve Schneider refinement in the context of CSP B. Our motivation to include this notion of refinement within the CSP B to change the events of a CSP process and the B machines when refining a system. Notions of refinement based

Doran, Simon J.

258

The corrosion of aluminum in boric acid solutions  

E-Print Network (OSTI)

vs. Time of at 40oC . vs. Time of 40 C . 34 ~ ~ ~ 35 3S Aluminum in Boric ~ ~ ~ 24S Aluminum in Boric Corrosion Rate Acid Solutions vs. Time of at 50oC . 2S Aluminum in Boric 36 Corrosion Rate Acid Solutions vs. Time of at 50oC 3S... Solutions vs. Time of 3S Aluminum in Boric at 70oC 40 Corrosion Rate Acid Solutions vs. Time of at 70oC 24S Aluminum in Boric ~ ~ ~ . a ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ /+1 14. Corrosion Rate Acid Solutions vs. Time of at 90cC 2S Aluminum in Boric 42 15...

Bass, Henry Kinsolving

2012-06-07T23:59:59.000Z

259

Flocculation-dispersion characteristics of alumina using a wide molecular weight range of polyacrylic acids  

Science Journals Connector (OSTI)

The effects of polymer molecular weight on the flocculation/dispersion behavior of a model colloidal system consisting of alumina and polyacrylic acid (PAA) were investigated. Low molecular weight polymers, traditionally used as dispersants were discovered to flocculate alumina at ultra low concentrations. For molecular weights ranging from 2000 to 50?000 g mol?1, distinct concentration ranges were found to exist in which the polymer behaved as a flocculant and above which it behaved as a dispersant. With increasing molecular weight, the number of polymer molecules required to achieve a benchmark flocculation (80% flocculation) decreased down to the molecular weight of 250?000 g mol?1 PAA. Above this size, there was no significant advantage of increasing the molecular weight. It was observed that regardless of the sign of the zeta potential, flocculation of alumina could be obtained with PAA suggesting that in addition to electrostatics, other forces such as bridging by hydrogen bonding are also responsible for the flocculation.

Kalyan K. Das; P. Somasundaran

2003-01-01T23:59:59.000Z

260

Study by IR-spectroscopy and adsorption of platinum-alumina catalysts modified by manganese  

SciTech Connect

Additions of Re are widely employed for modifying platinum-alumina catalysts (PAC). The effect of Mn on the catalysis of and the physicochemical properties of PAC has been less studied. It is only known that adding <0.2 wt. % Mn has no effect on the dispersity of the Pt crystallites. In this work the authors have studied the state of Pt in unmodified PAC by IR spectroscopy of adsorbed CO and by the adsorption of H/sub 2/ at elevated temperatures. The state of the metallic platinum in platinum-alumina catalysts modified by Mn is more heterogeneous than in the unmodified sample. When manganese is added, platinum crystallites with stronger electron-donor properties form on the surface of the catalyst. In platinum-alumina catalysts modified by manganese, there is an increase in the number of sites for the high-temperature dissociative adsorption of hydrogen located on the surface of the Mn-modified carrier.

Zaitsev, A.V.; Barkova, A.P.; Borovkov, B.Yu.; Sterligov, O.D.; Isagulyants, G.V.; Kazanskii, V.B.

1987-03-10T23:59:59.000Z

Note: This page contains sample records for the topic "aluminum alumina refining" 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

The effect of competition by chloride and sulfate anions on the adsorption of arsenate ion onto activated alumina  

E-Print Network (OSTI)

for adsorption sites on the activated alumina. The results of this study showed that the presence of 15 meq/L chloride anion depresses the ability of the arsenate to be adsorbed by F-1 activated alumina initial liquid phase arsenate ion concentration of 5 mg...

Janis, Patrick John

2012-06-07T23:59:59.000Z

262

Crack-Size Effects on Cyclic and Monotonic Crack Growth in Polycrystalline Alumina: Quantification of the Role of Grain Bridging  

E-Print Network (OSTI)

-prediction methodologies, it is necessary in many materials that the subcritical crack-growth and toughness propertiesCrack-Size Effects on Cyclic and Monotonic Crack Growth in Polycrystalline Alumina: Quantification propagation has been quantitatively examined in a 99.5% pure alumina. Fatigue-crack growth properties for both

Ritchie, Robert

263

Table 24. Refining Industry Energy Consumption  

Gasoline and Diesel Fuel Update (EIA)

- Corrections to Tables 24 to 32 - Corrections to Tables 24 to 32 Table 24. Refining Industry Energy Consumption 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2002- 2025 Carbon Dioxide Emissions 4/ (million metric tons) 190.4 185.7 188.0 191.3 207.3 215.6 220.0 222.8 225.1 226.3 228.0 230.7 234.1 237.5 238.5 239.4 239.4 238.6 240.6 240.5 242.2 244.2 245.9 246.3 246.6 1.2% Table 25. Food Industry Energy Consumption 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2002- 2025 Carbon Dioxide Emissions 3/ (million metric tons) 87.8 89.4 87.5 87.8 89.2 90.2 90.9 91.4 92.2 93.5 94.5 95.7 96.7 97.7 98.6 99.6 100.8 101.9 102.9 104.1 105.4 107.0 108.7 110.3 112.1 1.0% Table 26. Paper Industry Energy Consumption 2001 2002 2003 2004 2005 2006 2007

264

Development of a Novel Non-Consumable Anode for Electrowinning Primary Aluminum  

SciTech Connect

The principal goal of the project was to determine through theoretical considerations and from chemical and electrochemical laboratory studies the technical and economic feasibility for the substitution and retrofitting of an SOFC-type anode for today's carbon anode in a cell for electrowinning primary Al. However, solubility measurements showed that no value of cryolite ratio can exist where the solubilities of the solid electrolyte components (zirconia and especially yttria) would be small relative to the alumina solubility. Therefore, the utilization of the proposed SOFC-type anode cannot be realized for any cell involving a cryolite-base solvent. However, the project suggested that the SOFC-type anode scheme might be successful if the solvent/electrolyte for electrowinning Al could be changed to a fused sulfate melt. During the solubility experiments, electrochemical probes were developed, and a bath characterization was defined, to measure quantitatively the acid-base character of cryolite melts. The measured acid-base behavior was then used to correlate the alumina solubility in cryolite over a wide range of cryolite ratio at 1300K. A mathematical modeling of the alumina solubility as a function of basicity identified three solutes of Al{sub 2}O{sub 3} in cryolite-base melts: Na{sub 2}Al{sub 2}OF{sub 6}, Na{sub 2}Al{sub 2}O{sub 2}F{sub 4}, and Na{sub 4}Al{sub 2}O{sub 2}F{sub 6} as acidic, neutral and basic solutes, respectively. For the first time, the stereochemistry (geometries) of these complex solutes was clarified. For the non-oxygen containing Al-F complex anions, Na{sub 3}AlF{sub 6} and NaAlF{sub 4} were also considered as solutes, and some NaF (but no AlF{sub 3}) could remain in the melts. The previously suggested solute Na{sub 2}AlF{sub 5} was found to be unstable. The strong complexing in the cryolite/alumina system means that the bath is highly buffered so that a significant shift in basicity is not possible and therefore the alumina solubility does not vary greatly. The maximum solubility for alumina occurs at a cryolite ratio of about four. The method used for theoretical modeling of the alumina solubility in the NaF-AlF{sub 3} system involved the simultaneous solution of all possible equilibria in the bath coupled with element balances, similar to the software program SOLGASMiX. Such an analysis identified the dominant complex oxyfluoride solutes in the system and provided a quantitative evaluation for their stabilities. With these new values added to the thermodynamic data bank, the solubilities of other oxides in cryolite could be analyzed. Thus new papers by other authors on the solubilities of NiO/NiAl{sub 2}O{sub 4}, FeO/FeAl{sub 2}O{sub 4}, and TiO{sub 2} in cryolite were interpreted differently than the original authors to identify the solute ions and provide quantitative data for their stabilities in these systems: Na{sub 2}NiF{sub 4}, Na{sub 4}NiF{sub 6}, Na{sub 2}FeF{sub 4}, Na{sub 4}FeF{sub 6}, FeF{sub 2}, Na{sub 4}TiO{sub 2}F{sub 4}, NaTIOF{sub 3}, and Na{sub 3}TiO{sub 3}F. Again the stereochemistry for these solutes was described by simple geometric (octahedral and tetrahedral) arrangements of large anions about a smaller cation. In the case of the solubilities for the oxides of iron and nickel, the data and explanations would be useful in understanding the dissolution of the proposed Fe,Ni oxide composite for the oxygen-evolving inert anode. The research on this project has demonstrated the correct method to analyze the complicated equilibria in such a complex solution, and exposed as inadequate (incorrect) the existing (log-log) method of treating only one or two equilibria in isolation. In response to a high priority from the 2002 Aluminum Roadmapping report, two sensors were proposed to measure the dissolved alumina content in cryolite. Because of the high cost of the necessary BN hardware, however, confirming experiments were not undertaken. Hole-in-tube type sensors were designed and demonstrated for the measurement of Mg activity/concentration in binary Al-Mg melts and for Li activ

Robert A. Rapp; Y. Zhang

2003-12-04T23:59:59.000Z

265

C:\Eco-SSLs\Contaminant Specific Documents\Aluminum\November 2003\Eco-SSL for Aluminum .wpd  

NLE Websites -- All DOE Office Websites (Extended Search)

Aluminum Aluminum Interim Final OSWER Directive 9285.7-60 U.S. Environmental Protection Agency Office of Solid Waste and Emergency Response 1200 Pennsylvania Avenue, N.W. Washington, DC 20460 November 2003 This page intentionally left blank TABLE OF CONTENTS SUMMARY ECO-SSLs FOR ALUMINUM 1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 2.0 ALUMINUM CHEMISTRY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 3.0 EFFECTS OF ALUMINUM ON PLANTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.1 General Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.2 Essentiality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 3.3 Effect on Phosphorus and Calcium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 3.4 Differential Tolerance of Plants to Aluminum Toxicity

266

,"Weekly Refiner Net Production"  

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

Refiner Net Production" Refiner Net Production" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","Weekly Refiner Net Production",21,"Weekly","12/13/2013","6/4/2010" ,"Release Date:","12/18/2013" ,"Next Release Date:","12/27/2013" ,"Excel File Name:","pet_pnp_wprodr_s1_w.xls" ,"Available from Web Page:","http://www.eia.gov/dnav/pet/pet_pnp_wprodr_s1_w.htm" ,"Source:","Energy Information Administration" ,"For Help, Contact:","infoctr@eia.gov" ,,"(202) 586-8800",,,"12/18/2013 10:39:21 AM"

267

Alumina reinforced tetragonal zirconia (TZP) composites. Final technical report, July 1, 1993--December 31, 1996  

SciTech Connect

This final technical report summarizes the significant research results obtained during the period July 1, 1993 through December 31, 1996 in the DOE-supported research project entitled, {open_quotes}Alumina Reinforced Tetragonal Zirconia (TZP) Composites{close_quotes}. The objective of the research was to develop high-strength and high-toughness ceramic composites by combining mechanisms of platelet, whisker or fiber reinforcement with transformation toughening. The approach used included reinforcement of Celia- or yttria-partially-stabilized zirconia (Ce-TZP or Y-TZP) with particulates, platelets, or continuous filaments of alumina.

Shetty, D.K.

1997-06-01T23:59:59.000Z

268

ALUMINUM AND CHROMIUM LEACHING WORKSHOP WHITEPAPER  

SciTech Connect

A workshop was held on January 23-24, 2007 to discuss the status of processes to leach constituents from High Level Waste (HLW) sludges at the Hanford and Savannah River Sites. The objective of the workshop was to examine the needs and requirements for the HLW flowsheet for each site, discuss the status of knowledge of the leaching processes, communicate the research plans, and identify opportunities for synergy to address knowledge gaps. The purpose of leaching of non-radioactive constituents from the sludge waste is to reduce the burden of material that must be vitrified in the HLW melter systems, resulting in reduced HLW glass waste volume, reduced disposal costs, shorter process schedules, and higher facility throughput rates. The leaching process is estimated to reduce the operating life cycle of SRS by seven years and decrease the number of HLW canisters to be disposed in the Repository by 1000 [Gillam et al., 2006]. Comparably at Hanford, the aluminum and chromium leaching processes are estimated to reduce the operating life cycle of the Waste Treatment Plant by 20 years and decrease the number of canisters to the Repository by 15,000-30,000 [Gilbert, 2007]. These leaching processes will save the Department of Energy (DOE) billions of dollars in clean up and disposal costs. The primary constituents targeted for removal by leaching are aluminum and chromium. It is desirable to have some aluminum in glass to improve its durability; however, too much aluminum can increase the sludge viscosity, glass viscosity, and reduce overall process throughput. Chromium leaching is necessary to prevent formation of crystalline compounds in the glass, but is only needed at Hanford because of differences in the sludge waste chemistry at the two sites. Improving glass formulations to increase tolerance of aluminum and chromium is another approach to decrease HLW glass volume. It is likely that an optimum condition can be found by both performing leaching and improving formulations. Disposal of the resulting aluminum and chromium-rich streams are different at the two sites, with vitrification into Low Activity Waste (LAW) glass at Hanford, and solidification in Saltstone at SRS. Prior to disposal, the leachate solutions must be treated to remove radionuclides, resulting in increased operating costs and extended facility processing schedules. Interim storage of leachate can also add costs and delay tank closure. Recent projections at Hanford indicate that up to 40,000 metric tons of sodium would be needed to dissolve the aluminum and maintain it in solution, which nearly doubles the amount of sodium in the entire current waste tank inventory. This underscores the dramatic impact that the aluminum leaching can have on the entire system. A comprehensive view of leaching and the downstream impacts must therefore be considered prior to implementation. Many laboratory scale tests for aluminum and chromium dissolution have been run on Hanford wastes, with samples from 46 tanks tested. Three samples from SRS tanks have been tested, out of seven tanks containing high aluminum sludge. One full-scale aluminum dissolution was successfully performed on waste at SRS in 1982, but generated a very large quantity of liquid waste ({approx}3,000,000 gallons). No large-scale tests have been done on Hanford wastes. Although the data to date give a generally positive indication that aluminum dissolution will work, many issues remain, predominantly because of variable waste compositions and changes in process conditions, downstream processing, or storage limitations. Better approaches are needed to deal with the waste volumes and limitations on disposal methods. To develop a better approach requires a more extensive understanding of the kinetics of dissolution, as well as the factors that effect rates, effectiveness, and secondary species. Models of the dissolution rate that have been developed are useful, but suffer from limitations on applicable compositional ranges, mineral phases, and particle properties that are difficult to measure. The experimental

McCabe, D; Jeff Pike, J; Bill Wilmarth, B

2007-04-25T23:59:59.000Z

269

Aluminum phosphate ceramics for waste storage  

SciTech Connect

The present disclosure describes solid waste forms and methods of processing waste. In one particular implementation, the invention provides a method of processing waste that may be particularly suitable for processing hazardous waste. In this method, a waste component is combined with an aluminum oxide and an acidic phosphate component in a slurry. A molar ratio of aluminum to phosphorus in the slurry is greater than one. Water in the slurry may be evaporated while mixing the slurry at a temperature of about 140-200.degree. C. The mixed slurry may be allowed to cure into a solid waste form. This solid waste form includes an anhydrous aluminum phosphate with at least a residual portion of the waste component bound therein.

Wagh, Arun; Maloney, Martin D

2014-06-03T23:59:59.000Z

270

E-Print Network 3.0 - aluminum metal matrix Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Discontinuously reinforced aluminum composites, Nanophase aluminum alloys, Bulk metallic glasses... of Missouri 1993 Young Metallurgist Award from the Indian...

271

EFFECT OF MECHANICAL DISCONTINUITIES ON THE STRENGTH OF POLYCRYSTALLINE ALUMINUM OXIDE  

E-Print Network (OSTI)

THE STRENGTH OF POLYCRYSTALLINE ALUMINUM OXIDE S. Wallace ofThe variables and number of aluminum oxide (almnina). size~

Wallace, J.S.

2011-01-01T23:59:59.000Z

272

Strategies for aluminum recycling : insights from material system optimization  

E-Print Network (OSTI)

The dramatic increase in aluminum consumption over the past decades necessitates a societal effort to recycle and reuse these materials to promote true sustainability and energy savings in aluminum production. However, the ...

Li, Preston Pui-Chuen

2005-01-01T23:59:59.000Z

273

Development of a Cosmetic Corrosion Test for Aluminum Autobody...  

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

a Cosmetic Corrosion Test for Aluminum Autobody Panels AMD 309 Development of a Cosmetic Corrosion Test for Aluminum Autobody Panels AMD 309 Presentation from the U.S. DOE Office...

274

Surface alloying of silicon into aluminum substrate.  

SciTech Connect

Aluminum alloys that are easily castable tend to have lower silicon content and hence lower wear resistance. The use of laser surface alloying to improve the surface wear resistance of 319 and 320 aluminum alloys was examined. A silicon layer was painted onto the surface to be treated. A high power pulsed Nd:YAG laser with fiberoptic beam delivery was used to carry out the laser surface treatment to enhance the silicon content. Process parameters were varied to minimize the surface roughness from overlap of the laser beam treatment. The surface-alloyed layer was characterized and the silicon content was determined.

Xu, Z.

1998-10-28T23:59:59.000Z

275

Studies of the refining of crude cottonseed oil and its solutions in commercial hexane  

E-Print Network (OSTI)

with Different Concentrations of Caustic Soda................ 55 17. Refining of Diluted Cottonseed Oil-Hexane Fiscellas with 24? Re' Caustic Soda................................. 5^ Page LIST OF FIGURES (Continued) 18. Refining of FFOHR Cottonseed Oil.................................................... .65 21. Refining Cottonseed Oil Kiscellas with Ammonia Gas Followed by Caustic Re-refining......................... 67 22. Ammonium Hydroxide Refining of Cottonseed Oil-Hexane Kiscellas and Re-refining with 2.5$ of 20? Be' Caustic Soda...

Zeitoun, Mohamed Ali

2013-10-04T23:59:59.000Z

276

Cathode Connector For Aluminum Low Temperature Smelting Cell  

DOE Patents (OSTI)

Cathode connector means for low temperature aluminum smelting cell for connecting titanium diboride cathode or the like to bus bars.

Brown, Craig W. (Seattle, WA); Beck, Theodore R. (Seattle, WA); Frizzle, Patrick B. (Seattle, WA)

2003-07-16T23:59:59.000Z

277

Developing Refined Products Storage in the Strategic Petroleum Reserve |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Refined Products Storage in the Strategic Petroleum Refined Products Storage in the Strategic Petroleum Reserve Developing Refined Products Storage in the Strategic Petroleum Reserve May 12, 2009 - 3:14pm Addthis Statement of David F. Johnson, Deputy Assistant Secretary for Petroleum Reserves before the Committee on Energy and Natural Resources, United States Senate. Mr. Chairman and members of the Committee, I am pleased to be here today to discuss the issue of developing refined products storage in the Strategic Petroleum Reserve. As you know, the SPR was established by Congress through passage of the Energy Policy and Conservation Act in 1975 in response to the Arab oil embargoes. The primary policy of the U.S. petroleum stockpiling program has been to store crude oil. The SPR has served to protect our Nation from crude oil supply interruptions for over three

278

Secretary Bodman Tours Refinery and Calls for More Domestic Refining  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Tours Refinery and Calls for More Domestic Tours Refinery and Calls for More Domestic Refining Capacity Secretary Bodman Tours Refinery and Calls for More Domestic Refining Capacity May 18, 2006 - 10:43am Addthis Highlights President Bush's Four-Point Plan to Combat High Energy Prices PORT ARTHUR, TX - Secretary of Energy Samuel W. Bodman today renewed the call for expanded oil refining capacity in the United States and discussed additional steps the Department of Energy (DOE) is taking to prepare for the upcoming hurricane season. Secretary Bodman made the statements after touring the Motiva Refinery in Port Arthur, Texas. "We need a more robust energy sector; and one way to do that is to strengthen and expand our domestic oil refining capacity. We're hopeful that Motiva will continue to work to expand their capacity to 600,000

279

,"U.S. Refiner Acquisition Cost of Crude Oil"  

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

Acquisition Cost of Crude Oil" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","U.S. Refiner...

280

Petroleum Products Table 43. Refiner Motor Gasoline Volumes...  

Annual Energy Outlook 2012 (EIA)

133.6 - 276.4 See footnotes at end of table. 220 Energy Information AdministrationPetroleum Marketing Annual 2000 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type,...

Note: This page contains sample records for the topic "aluminum alumina refining" 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

Petroleum Products Table 43. Refiner Motor Gasoline Volumes...  

Annual Energy Outlook 2012 (EIA)

201.3 - 453.3 See footnotes at end of table. 262 Energy Information Administration Petroleum Marketing Annual 1995 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type,...

282

Wind Simulation Refinement: Some New Challenges for Particle Methods  

Science Journals Connector (OSTI)

We present two new challenges related to the stochastic downscaling method (SDM) that we applied to wind simulation refinement in Bernardin et al. (Stoch....Particle in Cell methods. Then we turn to the uniform d...

C. Chauvin; F. Bernardin; M. Bossy…

2010-01-01T23:59:59.000Z

283

Gulf Coast refiners gain access to more California crudes  

SciTech Connect

Refiners east of the Rockies, particularly Gulf Coast refiners, have gained access to easter and central California crudes with the opening of Celeron Corp.'s All American Pipeline (AAPL). Currently, AAPL is carrying a blend of California crudes with properties similar to Alaskan North Slope (ANS). Although the blend is moderate gravity and sulfur content, it is comprised of crudes from several fields in California that display wide variations in quality. Future deliveries east from California will be from regions with even more extremes of quality. To familiarize refiners with the crudes that will become available, some of the properties of these California crudes are discussed, along with some of the problems refiners may encounter in processing these materials.

Vautrain, J.H.; Sanderson, W.J.

1988-07-11T23:59:59.000Z

284

,"U.S. Total Refiner Acquisition Cost of Crude Oil"  

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

Crude Oil" "Sourcekey","R00003","R12003","R13003" "Date","U.S. Crude Oil Composite Acquisition Cost by Refiners (Dollars per Barrel)","U.S. Crude Oil Domestic...

285

Error estimation and adaptive mesh refinement for aerodynamic flows  

E-Print Network (OSTI)

Error estimation and adaptive mesh refinement for aerodynamic flows Ralf Hartmann1 and Paul Houston2 1 Institute of Aerodynamics and Flow Technology DLR (German Aerospace Center) Lilienthalplatz 7

Hartmann, Ralf

286

Source: Energy Information Administration, Form EIA-782A, "Refiners...  

Annual Energy Outlook 2012 (EIA)

S O N D 0 10 20 30 40 50 60 70 1995 Cents per Gallon Excluding Taxes Retail < or 1% Wholesale < or 1% Retail > 1% Wholesale > 1% 7. U.S. Refiner Residual Fuel Oil Prices and...

287

May 28 Webinar to Focus on Tribal Energy Project Refinement  

Energy.gov (U.S. Department of Energy (DOE))

Register for the Tribal Renewable Energy Project Refinement webinar, which will be held on Wednesday, May 28, 2014, from 11 a.m. to 12:30 p.m. Mountain time.

288

Efficient Parallel Refinement for Hierarchical Radiosity on a DSM computer  

E-Print Network (OSTI)

Efficient Parallel Refinement for Hierarchical Radiosity on a DSM computer François X. Sillion memory (DSM) parallel architecture. Our task definition is based on a very fine grain decompo- sition

Paris-Sud XI, Université de

289

LCA of a spent lube oil Re-refining process  

Science Journals Connector (OSTI)

Although re-refining of spent lubricating oils (used oils) has been practiced with varying technical and commercial success for over the past 50 years, a sustainable processing technology has yet to become widely accepted. Poor on-stream efficiency, inconsistent product quality, and careless management of feedstock contaminants and byproducts have often resulted in widespread environmental problems and poor economics. Environmentally-conscious design of processes and products is increasingly viewed as an integral strategy in the sustainable development of new refining and chemical processes. Life cycle assessment is becoming the preferred methodology for comparing the environmental impacts of competing processes. A life cycle analyses of a promising new re-refining technology, the HyLubeTM process, has been undertaken to quantify the intrinsic benefits of HyLube re-refining over the current practice of recovering used oils for fuel value

Tom N. Kalnes; David R. Shonnard; Andreas Schuppel

2006-01-01T23:59:59.000Z

290

The crisis in Kuwait and U. S. refiners' travail  

SciTech Connect

The August 2, 1990, invasion of Kuwait on the part of Iraq has set in motion an accelerated domino affect in US fuels markets. The impact on US refiners has been generally negative, both in terms of margins and perceptions of same. This issue of Energy Detente (ED) updates a few directional indicators that affect refining margins and considers longer-term refining capacity requirements in the US. ED feels the invasion of Kuwait might force oil companies to allocate more talent, time, and financial resources to public affairs. This issue also contains the following: (1) The ED Refining Netback Data Series for the US Gulf and West Coasts, Rotterdam, and Singapore as of Aug. 24, 1990; and (2) the ED Fuel Price/Tax Series for countries of the Eastern Hemisphere Aug. 1990 edition. 4 figs., 5 tabs.

Not Available

1990-08-31T23:59:59.000Z

291

CATALYTIC CONVERSION OF SOLVENT REFINED COAL TO LIQUID PRODUCTS  

E-Print Network (OSTI)

I. Solvent Refined Coal II. Catalysts III. Purpose andSondreal, E.A. , "Viscosity of Coal Liquids - The Effect ofAnthraxylon - Kinetics of Coal Hydrogenation," Ind. and Eng.

Tanner, K.I.

2010-01-01T23:59:59.000Z

292

Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...  

Gasoline and Diesel Fuel Update (EIA)

2,026.7 W W 234.5 161.7 - 396.3 See footnotes at end of table. 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State 262 Energy Information...

293

Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...  

Gasoline and Diesel Fuel Update (EIA)

2,222.4 W W 206.4 134.3 - 340.7 See footnotes at end of table. 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State 262 Energy Information...

294

Polygons in Buildings and their Refined Side Lengths  

E-Print Network (OSTI)

1999. [Bro] K. Brown, Buildings, Springer, 1989. [BuBI] D.AMS, 2001. [D] M. Davis, Buildings are CAT(0), in “Geometryat Springerlink.com POLYGONS IN BUILDINGS AND THEIR REFINED

Kapovich, Michael; Leeb, Bernhard; Millson, John J.

2009-01-01T23:59:59.000Z

295

Hydrogen and Fuel Cells - Refining the Message Initiating a National Dialogue and Educational Agenda  

E-Print Network (OSTI)

Hydrogen and Fuel Cells – Refining the Message Initiating aApril 1, 2005 Hydrogen and Fuel Cells – Refining the Messagethe communication problem. Hydrogen and fuel cells have now

Eggert, Anthony; Kurani, Kenneth S; Turrentine, Tom; Ogden, Joan M; Sperling, Dan; Winston, Emily

2005-01-01T23:59:59.000Z

296

ALUMINUM--2003 5.1 By Patricia A. Plunkert  

E-Print Network (OSTI)

, about 1.5 million metric tons per year (Mt/yr) of domestic primary aluminum smelting capacity, including idled potlines at operating smelters, equivalent to about 35% of total capacity, was closed. Aluminum and the container and packaging industries remained the leading markets for aluminum products in Canada

297

Activated aluminum hydride hydrogen storage compositions and uses thereof  

SciTech Connect

In one aspect, the invention relates to activated aluminum hydride hydrogen storage compositions containing aluminum hydride in the presence of, or absence of, hydrogen desorption stimulants. The invention particularly relates to such compositions having one or more hydrogen desorption stimulants selected from metal hydrides and metal aluminum hydrides. In another aspect, the invention relates to methods for generating hydrogen from such hydrogen storage compositions.

Sandrock, Gary (Ringwood, NJ); Reilly, James (Bellport, NY); Graetz, Jason (Mastic, NY); Wegrzyn, James E. (Brookhaven, NY)

2010-11-23T23:59:59.000Z

298

Aluminum Removal from Photographic Waste Submitted to Dr. Tony Bi  

E-Print Network (OSTI)

Aluminum Removal from Photographic Waste Submitted to Dr. Tony Bi By: Kristen Favel, Tiffany Jung, and Kenny Tam CHBE 484 University of British Columbia April 15, 2009 #12;ii "Aluminum Removal from photographic waste has shown elevated levels of aluminum in the fixer, which exceed sewer discharge standards

299

Mobilizing aluminum in crustal and mantle fluids Craig E. Manning  

E-Print Network (OSTI)

Mobilizing aluminum in crustal and mantle fluids Craig E. Manning Department of Earth and Space December 2005 Available online 9 March 2006 Abstract Aluminum is a major rock-forming element, but its low by formation of polynuclear Na­Al­Si­O clusters and/or polymers. Aluminum should not be assumed to be immobile

Manning, Craig

300

Inhibition of Aluminum Oxyhydroxide Precipitation with Citric Acid  

E-Print Network (OSTI)

Inhibition of Aluminum Oxyhydroxide Precipitation with Citric Acid Daniel M. Dabbs, Usha as an agent for increasing the solubility of aluminum oxyhydroxides in aqueous solutions of high (>2.47 mol/mol) hydroxide-to-aluminum ratios. Conversely, citric acid also colloidally stabilizes particles in aqueous

Aksay, Ilhan A.

Note: This page contains sample records for the topic "aluminum alumina refining" 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

Reaction of Aluminum with Water to Produce Hydrogen  

E-Print Network (OSTI)

Reaction of Aluminum with Water to Produce Hydrogen A Study of Issues Related to the Use of Aluminum for On-Board Vehicular Hydrogen Storage U.S. Department of Energy Version 1.0 - 2008 Page 1 Promoters Oxide Promoters Salt Promoters Combined Oxide and Salt Promoters Aluminum Pretreatment Molten

302

The Effects of Fe3+ Aluminum Silicate Phase Relations in  

E-Print Network (OSTI)

The Effects of Fe3+ and Mn3+ on Aluminum Silicate Phase Relations in North-Central New Mexico, U, New Mexico 87131 (Received 28 November 1983; in revised form 2 October 1984) ABSTRACT Aluminum, then their equilibrium coexistence is invariant. However, the aluminum silicate minerals are not pure in highly oxidized

Lee, Cin-Ty Aeolus

303

POST-SHOCK TEMPERATURE MEASUREMENTS OF ALUMINUM A. Seifter1  

E-Print Network (OSTI)

POST-SHOCK TEMPERATURE MEASUREMENTS OF ALUMINUM A. Seifter1 , S. T. Stewart2 , M. R. Furlanetto1 concurrent VISAR measurements in the same optical path, validation experiments on aluminum have been-shock temperature of 495 K ± 30 K was recorded from a polished free surface of aluminum 2024-T4 subject to a peak

Stewart, Sarah T.

304

Reaction of Aluminum with Water to Produce Hydrogen  

E-Print Network (OSTI)

Reaction of Aluminum with Water to Produce Hydrogen A Study of Issues Related to the Use of Aluminum for On-Board Vehicular Hydrogen Storage U.S. Department of Energy Version 2 - 2010 1 #12 Promoters Oxide Promoters Salt Promoters Combined Oxide and Salt Promoters Aluminum Pretreatment Molten

305

Optical frequency standards based on mercury and aluminum ions  

E-Print Network (OSTI)

Optical frequency standards based on mercury and aluminum ions W. M. Itano, J. C. Bergquist, A-16 . Keywords: aluminum, atomic clocks, frequency standards, ion traps, mercury 1. INTRODUCTION Optical frequency standards based on the mercury ion and, more recently, the aluminum ion are under devel- opment

306

ccsd00002835, Light scattering from cold rolled aluminum surfaces  

E-Print Network (OSTI)

ccsd­00002835, version 2 ­ 14 Sep 2004 Light scattering from cold rolled aluminum surfaces Damien Camille Soula , 31400 Toulouse, France We present experimental light scattering measurements from aluminum scattering measurements of an s-polarized electromagnetic wave (632.8 nanometers) from a rough aluminum alloy

307

DESCRIBING THE PLASTIC DEFORMATION OF ALUMINUM SOFTBALL BATS  

E-Print Network (OSTI)

DESCRIBING THE PLASTIC DEFORMATION OF ALUMINUM SOFTBALL BATS E. BIESEN1 AND L. V. SMITH2 Washington-mail: lvsmith@wsu.edu Hollow aluminum bats were introduced over 30 years ago to provide improved durability over durability. Accordingly, the plastic deformation from a ball impact of a single-wall aluminum bat

Smith, Lloyd V.

308

Aluminum Waste Reaction Indicators in a Municipal Solid Waste Landfill  

E-Print Network (OSTI)

Aluminum Waste Reaction Indicators in a Municipal Solid Waste Landfill Timothy D. Stark, F.ASCE1 landfills may contain aluminum from residential and commercial solid waste, industrial waste, and aluminum, may react with liquid in a landfill and cause uncontrolled temperature increases, significant changes

309

Former Corporation/Refiner Total Atmospheric Crude Oil Distillation Capacity  

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

Former Corporation/Refiner Former Corporation/Refiner Total Atmospheric Crude Oil Distillation Capacity (bbl/cd) New Corporation/Refiner Date of Sale Table 12. Refinery Sales During 2012 Antelope Refining LLC Garco Energy LLC 3/12 Douglas, WY 3,800 Delta Air Lines/Monroe Energy LLC ConocoPhillips Company 4/12 Trainer, PA 185,000 Phillips 66 Company ConocoPhillips Company 5/12 Belle Chasse, LA 252,000 Billings, MT 59,000 Ferndale, WA 101,000 Linden, NJ 238,000 Ponca City, OK 198,400 Rodeo, CA 120,200 Sweeny, TX 247,000 Westlake, LA 239,400 Wilmington, CA 139,000 Nustar Asphalt LLC (50% Nustar Energy LP and 50% Lindsay Goldberg LLC) Nustar Energy LP/Nustar Asphalt Refining LLC 9/12 Paulsboro, NJ 70,000 Savannah, GA 28,000 Carlyle Group/Philadelphia Energy Solutions Refining and Marketing LLC Sunoco Inc./Sunoco Inc. R&M

310

The oxidation of aluminum at high temperature studied by Thermogravimetric Analysis and Differential Scanning Calorimetry.  

SciTech Connect

The oxidation in air of high-purity Al foil was studied as a function of temperature using Thermogravimetric Analysis with Differential Scanning Calorimetry (TGA/DSC). The rate and/or extent of oxidation was found to be a non-linear function of the temperature. Between 650 and 750 %C2%B0C very little oxidation took place; at 850 %C2%B0C oxidation occurred after an induction period, while at 950 %C2%B0C oxidation occurred without an induction period. At oxidation temperatures between 1050 and 1150 %C2%B0C rapid passivation of the surface of the aluminum foil occurred, while at 1250 %C2%B0C and above, an initial rapid mass increase was observed, followed by a more gradual increase in mass. The initial rapid increase was accompanied by a significant exotherm. Cross-sections of oxidized specimens were characterized by scanning electron microscopy (SEM); the observed alumina skin thicknesses correlated qualitatively with the observed mass increases.

Coker, Eric Nicholas

2013-10-01T23:59:59.000Z

311

Commonwealth Aluminum: Manufacturer Conducts Plant-Wide Energy Assessments at Two Aluminum Sheet Production Operations  

Energy.gov (U.S. Department of Energy (DOE))

This case study describes how Commonwealth Industries (now Aleris Rolled Products) conducted plant-wide energy assessments at its aluminum sheet rolling mills in Lewisport, Kentucky, and Uhrichsville, Ohio, to improve process and energy efficiency.

312

Micro Catalytic Combustor with Pd/Nano-porous Alumina for High-Temperature Application  

E-Print Network (OSTI)

, the mixture temperature at the combustor inlet is set to 630 o C. Thermal conductivity of the ceramic wall Keywords: Catalytic combustion, Pd/nano-porous alumina, Ceramic tape casting, Thermophotovoltaic Abstract: A micro-scale catalytic combustor using high-precision ceramic tape-casting technology has been developed

Kasagi, Nobuhide

313

Texture and porosity effects on the thermal radiative behavior of alumina ceramics.  

E-Print Network (OSTI)

1 Texture and porosity effects on the thermal radiative behavior of alumina ceramics. O. Rozenbaum1 for the comprehension of the ceramics thermal properties. Keywords: ceramics, texture, emissivity spectra, infrared (2009) 580-590" DOI : 10.1007/s10765-008-0510-1 #12;2 Abstract Thermal and optical properties

Paris-Sud XI, Université de

314

STRESS-DENSITY VARIATIONS IN ALUMINA SEDIMENTS: EFFECTS OF POLYMER CHEMISTRY  

E-Print Network (OSTI)

151 STRESS-DENSITY VARIATIONS IN ALUMINA SEDIMENTS: EFFECTS OF POLYMER CHEMISTRY C. H. SCHILLING present a novel approach for analyzing sediments by gamma-ray densitometry 1 and a fluid mechanics model.g., rheometry, sedimentation kinetics modeling, soil mechanics tests), especially for the low stresses (

Aksay, Ilhan A.

315

Discrete Barium Strontium Titanate (BST) Thin-Film Interdigital Varactors on Alumina: Design, Fabrication, Characterization, and  

E-Print Network (OSTI)

Discrete Barium Strontium Titanate (BST) Thin-Film Interdigital Varactors on Alumina: Design, Raleigh, NC-27695-7914, USA. Email:jayeshnath@ieee.org Abstract -- Discrete Barium Strontium Titanate (BST, capacitors, BST, ferroelectric, thin-film, barium strontium titanate, bandpass filter, IP3, ACPR, temperature

316

Advanced Materials for Sodium-Beta Alumina Batteries: Status, Challenges and Perspectives  

SciTech Connect

The increasing penetration of renewable energy and the trend toward clean, efficient transportation have spurred growing interests in sodium-beta alumina batteries that store electrical energy via sodium ion transport across a ?"-Al2O3 solid electrolyte at elevated temperatures (typically 300~350°C). Currently, the negative electrode or anode is metallic sodium in molten state during battery operation; the positive electrode or cathode can be molten sulfur (Na-S battery) or solid transition metal halides plus a liquid phase secondary electrolyte (e.g., ZEBRA battery). Since the groundbreaking works in the sodium-beta alumina batteries a few decades ago, encouraging progress has been achieved in improving battery performance, along with cost reduction. However there remain issues that hinder broad applications and market penetration of the technologies. To better the Na-beta alumina technologies require further advancement in materials along with component and system design and engineering. This paper offers a comprehensive review on materials of electrodes and electrolytes for the Na-beta alumina batteries and discusses the challenges ahead for further technology improvement.

Lu, Xiaochuan; Xia, Guanguang; Lemmon, John P.; Yang, Zhenguo

2010-05-01T23:59:59.000Z

317

Adsorption of carbonyl sulfide from liquid hydrocarbons with activated alumina and other adsorbents  

SciTech Connect

Contamination of Liquid hydrocarbon streams with carbonyl sulfide (COS) is not desirable; particularly in propylene. COS may poison the down stream polymerization catalyst. Thus, it is usually required to reduce the COS concentration to an extremely low level, e.g. 1 ppm or less, for polymer grade propylene. Many technologies generally available for sulfur removal, such as scrubbing and distillation are not applicable to the removal of COS from propylene. The former is not suitable for a low level removal. With the boiling point of COS (-50{sup 0}C) very close to that of propylene (-48{sup 0}C) it is difficult to achieve a very efficient separation with distillation. Adsorption technology provides a very energy efficient process in addition to its ability of the low level removal. Adsorbents selected in this study include activated carbon, molecular sieves, zinc oxide and activated alumina. The results show that activated alumina is far superior in both adsorption capacity and rate. An adsorption mechanism with activated alumina is proposed. It is believed that adsorption of COS takes place simultaneously with the hydrolysis of COS on the alumina surface. Adsorption isotherms of COS up to 100 ppm and the effect of moisture content are also addressed in this study.

Liu, P.K.T. (Alcoa Separations Technology Div., Aluminum Co. of America, Warrendale, PA (US))

1988-01-01T23:59:59.000Z

318

Metallic State in a Lime?Alumina Compound with Nanoporous Structure  

Science Journals Connector (OSTI)

Metallic State in a Lime?Alumina Compound with Nanoporous Structure ... Six Ca ions (green spheres) form a part of the cage wall and two Ca ions coordinate to a free oxygen ion or to an empty cage center. ... Mineral., Monatsh. ...

Sung Wng Kim; Satoru Matsuishi; Takatoshi Nomura; Yoshiki Kubota; Masaki Takata; Katsuro Hayashi; Toshio Kamiya; Masahiro Hirano; Hideo Hosono

2007-03-22T23:59:59.000Z

319

Surface preparation for high purity alumina ceramics enabling direct brazing in hydrogen atmospheres  

DOE Patents (OSTI)

The present invention relates to a method for preparing the surface of a high purity alumina ceramic or sapphire specimen that enables direct brazing in a hydrogen atmosphere using an active braze alloy. The present invention also relates to a method for directly brazing a high purity alumina ceramic or sapphire specimen to a ceramic or metal member using this method of surface preparation, and to articles produced by this brazing method. The presence of silicon, in the form of a SiO.sub.2 -containing surface layer, can more than double the tensile bond strength in alumina ceramic joints brazed in a hydrogen atmosphere using an active Au-16Ni-0.75 Mo-1.75V filler metal. A thin silicon coating applied by PVD processing can, after air firing, produce a semi-continuous coverage of the alumina surface with a SiO.sub.2 film. Room temperature tensile strength was found to be proportional to the fraction of air fired surface covered by silicon-containing films. Similarly, the ratio of substrate fracture versus interface separation was also related to the amount of surface silicon present prior to brazing. This process can replace the need to perform a "moly-manganese" metallization step.

Cadden, Charles H. (Danville, CA); Yang, Nancy Yuan Chi (Lafayette, CA); Hosking, Floyd M. (Albuquerque, NM)

2001-01-01T23:59:59.000Z

320

Membrane Purification Cell for Aluminum Recycling  

SciTech Connect

Recycling mixed aluminum scrap usually requires adding primary aluminum to the scrap stream as a diluent to reduce the concentration of non-aluminum constituents used in aluminum alloys. Since primary aluminum production requires approximately 10 times more energy than melting scrap, the bulk of the energy and carbon dioxide emissions for recycling are associated with using primary aluminum as a diluent. Eliminating the need for using primary aluminum as a diluent would dramatically reduce energy requirements, decrease carbon dioxide emissions, and increase scrap utilization in recycling. Electrorefining can be used to extract pure aluminum from mixed scrap. Some example applications include producing primary grade aluminum from specific scrap streams such as consumer packaging and mixed alloy saw chips, and recycling multi-alloy products such as brazing sheet. Electrorefining can also be used to extract valuable alloying elements such as Li from Al-Li mixed scrap. This project was aimed at developing an electrorefining process for purifying aluminum to reduce energy consumption and emissions by 75% compared to conventional technology. An electrolytic molten aluminum purification process, utilizing a horizontal membrane cell anode, was designed, constructed, operated and validated. The electrorefining technology could also be used to produce ultra-high purity aluminum for advanced materials applications. The technical objectives for this project were to: - Validate the membrane cell concept with a lab-scale electrorefining cell; - Determine if previously identified voltage increase issue for chloride electrolytes holds for a fluoride-based electrolyte system; - Assess the probability that voltage change issues can be solved; and - Conduct a market and economic analysis to assess commercial feasibility. The process was tested using three different binary alloy compositions (Al-2.0 wt.% Cu, Al-4.7 wt.% Si, Al-0.6 wt.% Fe) and a brazing sheet scrap composition (Al-2.8 wt.% Si-0.7 wt.% Fe-0.8 wt.% Mn),. Purification factors (defined as the initial impurity concentration divided by the final impurity concentration) of greater than 20 were achieved for silicon, iron, copper, and manganese. Cell performance was measured using its current and voltage characteristics and composition analysis of the anode, cathode, and electrolytes. The various cells were autopsied as part of the study. Three electrolyte systems tested were: LiCl-10 wt. % AlCl3, LiCl-10 wt. % AlCl3-5 wt.% AlF3 and LiF-10 wt.% AlF3. An extended four-day run with the LiCl-10 wt.% AlCl3-5 wt.% AlF3 electrolyte system was stable for the entire duration of the experiment, running at energy requirements about one third of the Hoopes and the conventional Hall-Heroult process. Three different anode membranes were investigated with respect to their purification performance and survivability: a woven graphite cloth with 0.05 cm nominal thickness & > 90 % porosity, a drilled rigid membrane with nominal porosity of 33%, and another drilled rigid graphite membrane with increased thickness. The latter rigid drilled graphite was selected as the most promising membrane design. The economic viability of the membrane cell to purify scrap is sensitive to primary & scrap aluminum prices, and the cost of electricity. In particular, it is sensitive to the differential between scrap and primary aluminum price which is highly variable and dependent on the scrap source. In order to be economically viable, any scrap post-processing technology in the U.S. market must have a total operating cost well below the scrap price differential of $0.20-$0.40 per lb to the London Metal Exchange (LME), a margin of 65%-85% of the LME price. The cost to operate the membrane cell is estimated to be < $0.24/lb of purified aluminum. The energy cost is estimated to be $0.05/lb of purified aluminum with the remaining costs being repair and maintenance, electrolyte, labor, taxes and depreciation. The bench-scale work on membrane purification cell process has demonstrated technological advantages and subs

David DeYoung; James Wiswall; Cong Wang

2011-11-29T23:59:59.000Z

Note: This page contains sample records for the topic "aluminum alumina refining" 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

Computed Shock Response of Porous Aluminum  

Science Journals Connector (OSTI)

The shock response of powdered aluminum compacted by a driver plate was simulated with a one?dimensional Lagrangiancontinuum mechanicscomputer program. The porous aluminum was mocked up by a series of flat plates separated by gaps to obtain an initial density of 1.35 g/cm3 for the ``powder.'' The compaction process was followed in detail for two cases of driver?plate conditions corresponding to two Stanford Research Institute experiments. The calculations showed an approach to equilibrium behind the shock in each of the porous samples. The equilibrium states established were found to be consistent with the Rankine?Hugoniot jump conditions applied to aluminum of density 1.35 g/cm3. These states did not lie on the Hugoniot curve of solid?density aluminum. This was shown to be due to the significant internal?energy dependency in the equation of state. The calculated results were in good agreement with the SRI experiments. Application of this computational model to more complex cases is indicated.

Ronald Hofmann; Dudley J. Andrews; D. E. Maxwell

1968-01-01T23:59:59.000Z

322

Chemical vapor deposition of aluminum oxide  

DOE Patents (OSTI)

An aluminum oxide film is deposited on a heated substrate by CVD from one or more alkylaluminum alkoxide compounds having composition R.sub.n Al.sub.2 (OR').sub.6-n, wherein R and R' are alkyl groups and n is in the range of 1 to 5.

Gordon, Roy (Cambridge, MA); Kramer, Keith (Cleveland, OH); Liu, Xinye (Cambridge, MA)

2000-01-01T23:59:59.000Z

323

Aluminum Solubility in Complex Electrolytes - 13011  

SciTech Connect

Predicting aluminum solubility for Hanford and Savannah River waste liquids is very important for their disposition. It is a key mission goal at each Site to leach as much aluminum as practical from sludges in order to minimize the amount of vitrified high level waste. And it is correspondingly important to assure that any soluble aluminum does not precipitate during subsequent decontamination of the liquid leachates with ion exchange. This report shows a very simple and yet thermodynamic model for aluminum solubility that is consistent with a wide range of Al liquors, from simple mixtures of hydroxide and aluminate to over 300 Hanford concentrates and to a set of 19 Bayer liquors for temperatures from 20-100 deg. C. This dimer-dS{sub mix} (DDS) model incorporates an ideal entropy of mixing along with previous reports for the Al dimer, water activities, gibbsite, and bayerite thermodynamics. We expect this model will have broad application for nuclear wastes as well as the Bayer gibbsite process industry. (authors)

Agnew, S.F. [Columbia Energy and Environmental Services, Inc., 1806 Terminal Dr., Richland, WA 99354 (United States)] [Columbia Energy and Environmental Services, Inc., 1806 Terminal Dr., Richland, WA 99354 (United States); Johnston, C.T. [Dept. of Crop, Soil, and Environmental Sciences, Purdue University, West Lafayette, IN 47907 (United States)] [Dept. of Crop, Soil, and Environmental Sciences, Purdue University, West Lafayette, IN 47907 (United States)

2013-07-01T23:59:59.000Z

324

Climate VISION: Private Sector Initiatives: Aluminum: GHG Inventory  

Office of Scientific and Technical Information (OSTI)

GHG Inventory Protocols GHG Inventory Protocols EPA/IAI PFC Measurement Protocol (PDF 243 KB) Download Acrobat Reader EPA and the International Aluminium Institute have collaborated with the global primary aluminium industry to develop a standard facility-specific PFC emissions measurement protocol. Use of the protocol will help ensure the consistency and accuracy of measurements. International Aluminum Institute's Aluminum Sector Greenhouse Gas Protocol (PDF 161 KB) Download Acrobat Reader The International Aluminum Institute (IAI) Aluminum Sector Addendum to the WBCSD/WRI Greenhouse Gas Protocol enhances and expands for the aluminum sector the World Business Council for Sustainable Development/World Resources Institute greenhouse gas corporate accounting and reporting protocol.

325

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

Office of Scientific and Technical Information (OSTI)

Federal/State Programs Federal/State Programs DOE Aluminum Industry of the Future Collaborative R&D partnerships between DOE Industrial Technologies Program and industry to maximize technology investments. EPA Voluntary Aluminum Industrial Partnership The Voluntary Aluminum Industrial Partnership (VAIP) is an innovative pollution prevention program developed jointly by the U.S. Environmental Protection Agency (EPA) and the primary aluminum industry. Participating companies (Partners) work with EPA to improve aluminum production efficiency while reducing perfluorocarbon (PFC) emissions, potent greenhouse gases that may remain in the atmosphere for thousands of years. See all Federal/State Programs DOE State Activities For information on activities, financial assistance, and solicitations

326

FLOWSHEET FOR ALUMINUM REMOVAL FROM SLUDGE BATCH 6  

SciTech Connect

Samples of Tank 12 sludge slurry show a substantially larger fraction of aluminum than originally identified in sludge batch planning. The Liquid Waste Organization (LWO) plans to formulate Sludge Batch 6 (SB6) with about one half of the sludge slurry in Tank 12 and one half of the sludge slurry in Tank 4. LWO identified aluminum dissolution as a method to mitigate the effect of having about 50% more solids in High Level Waste (HLW) sludge than previously planned. Previous aluminum dissolution performed in a HLW tank in 1982 was performed at approximately 85 C for 5 days and dissolved nearly 80% of the aluminum in the sludge slurry. In 2008, LWO successfully dissolved 64% of the aluminum at approximately 60 C in 46 days with minimal tank modifications and using only slurry pumps as a heat source. This report establishes the technical basis and flowsheet for performing an aluminum removal process in Tank 51 for SB6 that incorporates the lessons learned from previous aluminum dissolution evolutions. For SB6, aluminum dissolution process temperature will be held at a minimum of 65 C for at least 24 days, but as long as practical or until as much as 80% of the aluminum is dissolved. As planned, an aluminum removal process can reduce the aluminum in SB6 from about 84,500 kg to as little as 17,900 kg with a corresponding reduction of total insoluble solids in the batch from 246,000 kg to 131,000 kg. The extent of the reduction may be limited by the time available to maintain Tank 51 at dissolution temperature. The range of dissolution in four weeks based on the known variability in dissolution kinetics can range from 44 to more than 80%. At 44% of the aluminum dissolved, the mass reduction is approximately 1/2 of the mass noted above, i.e., 33,300 kg of aluminum instead of 66,600 kg. Planning to reach 80% of the aluminum dissolved should allow a maximum of 81 days for dissolution and reduce the allowance if test data shows faster kinetics. 47,800 kg of the dissolved aluminum will be stored in Tank 8 and 21,000 kg will be stored in saltcake via evaporation. Up to 77% of the total aluminum planned for SB6 may be removed via aluminum dissolution. Storage of the aluminum-laden supernate in Tank 8 will require routine evaluation of the free hydroxide concentration in order to maintain aluminum in solution. Periodic evaluation will be established on concurrent frequency with corrosion program samples as previously established for aluminum-laden supernate from SB5 that is stored in Tank 11.

Pike, J; Jeffrey Gillam, J

2008-12-17T23:59:59.000Z

327

Development of low dielectric constant alumina-based ceramics for microelectronic substrates  

SciTech Connect

The performance of high speed computers depends not only on IC chips, but also on the signal propagation speed between these chips. The signal propagation delay in a computer is determined by the dielectric constant of the substrate material to which the IC chips are attached. In this study, a ceramic substrate with a low dielectric constant (k {approx} 5.0) has been developed. When compared with the traditional alumina substrate (k {approx} 10.0), the new material corresponds to a 37% decrease in the signal propagation delay. Glass hollow spheres are used to introduce porosity (k = 1.0) to the alumina matrix in a controlled manner. A surface coating technique via heterogeneous nucleation in aqueous solution has been used to improve the high temperature stability of these spheres. After sintering at 1,400 C, isolated spherical pores are uniformly distributed in the almost fully dense alumina matrix; negligible amounts of matrix defects can be seen. All pores are isolated from each other. Detailed analyses of the chemical composition find that the sintered sample consists of {alpha}-alumina, mullite and residual glass. Mullite is the chemical reaction product of alumina and the glass spheres. Residual glass exists because current firing conditions do not complete the mullitization reaction. The dielectric constant of the sintered sample is measured and then compared with the predicted value using Maxwell`s model. Mechanical strength is evaluated by a four-point bending test. Although the flexural strength decreases exponentially with porosity, samples with 34% porosity (k {approx} 5.0) still maintain adequate mechanical strength for the proper operation of a microelectronic substrate.

Wu, S.J. [Lawrence Berkeley Lab., CA (United States). Materials Science Div.]|[California Univ., Berkeley, CA (United States). Dept. of Materials Science and Mineral Engineering

1993-05-01T23:59:59.000Z

328

Production of sodium-22 from proton irradiated aluminum  

DOE Patents (OSTI)

A process for selective separation of sodium-22 from a proton irradiated minum target including dissolving a proton irradiated aluminum target in hydrochloric acid to form a first solution including aluminum ions and sodium ions, separating a portion of the aluminum ions from the first solution by crystallization of an aluminum salt, contacting the remaining first solution with an anion exchange resin whereby ions selected from the group consisting of iron and copper are selectively absorbed by the anion exchange resin while aluminum ions and sodium ions remain in solution, contacting the solution with an cation exchange resin whereby aluminum ions and sodium ions are adsorbed by the cation exchange resin, and, contacting the cation exchange resin with an acid solution capable of selectively separating the adsorbed sodium ions from the cation exchange resin while aluminum ions remain adsorbed on the cation exchange resin is disclosed.

Taylor, Wayne A. (Los Alamos, NM); Heaton, Richard C. (Los Alamos, NM); Jamriska, David J. (Los Alamos, NM)

1996-01-01T23:59:59.000Z

329

Spot welding of steel and aluminum using insert sheet  

SciTech Connect

Automobile industries have been increasingly interested in the use of aluminum and thus joining of steel and aluminum becomes of importance. The joining of the two types of metal raises a problem of brittle welds caused by the formation of intermetallic compounds. The authors solved the problem by using an insert sheet. This paper deals with the resistance spot welding of steel and aluminum sheets using insert sheets. The insert sheet used in the present development was a steel/aluminum clad sheet of the 0.8 mm thickness with 50% steel and 50% aluminum. The clad sheet was produced by warm rolling of steel and aluminum with a direct resistance heating process. Steel to be warm rolled was of EDDQ of the 0.4 mm thickness and aluminum was of JIS A1050 of 0.6 mm thickness. The mechanical properties of the insert clad sheets were in between those of the steel sheets and the aluminum sheets, while the clad sheets showed much better formability than the aluminum sheets. Resistance spot welding was conducted for 0.8 mm thick EDDQ steel sheets and 1.0 mm thick aluminum alloy (AL-5.5%Mg) sheets under the welding force of 1.96 kN, welding current ranging between 4.2 and 20.1 kA, and welding time from 0.5 to 10 cycles. The steel was spot welded to the steel side of the insert sheet while the aluminum was welded to the aluminum side. What the authors investigated were the applicable welding current range, nugget diameter, tensile shear strength, U-tension strength, and macro- and microstructures. In conclusion, steel sheets can be spot welded to aluminum sheets without difficulty by using clad sheets as insert materials while the strength level of the dissimilar metal spot welds is close to that of aluminum joints.

Oikawa, H.; Saito, T.; Yoshimura, T. [and others

1994-12-31T23:59:59.000Z

330

Synthesis and characterization of visible emission from rare-earth doped aluminum nitride, gallium nitride and gallium aluminum nitride powders and thin films  

E-Print Network (OSTI)

of the Nitrides of Aluminum and Gallium," J. Electrochem.1) 24 (1962). G. Long and L. M. Foster, "Aluminum Nitride, aRefractory for Aluminum to 2000°C," J. Am. Ceram. Soc. ,

Tao, Jonathan Huai-Tse

2010-01-01T23:59:59.000Z

331

Microarray Analysis on Human Neuroblastoma Cells Exposed to Aluminum, Beta1–42-Amyloid or the Beta1–42-Amyloid Aluminum Complex  

E-Print Network (OSTI)

J (1992) Selective accumulation of aluminum and iron in theB, Tognon G, Zatta P (2005) Aluminum-triggered structuralrole of beta-amyloid(1-42)-aluminum complex in Alzheimer’s

2011-01-01T23:59:59.000Z

332

Adaptive mesh refinement for shocks and material interfaces  

SciTech Connect

There are three kinds of adaptive mesh refinement (AMR) in structured meshes. Block-based AMR sometimes over refines meshes. Cell-based AMR treats cells cell by cell and thus loses the advantage of the nature of structured meshes. Patch-based AMR is intended to combine advantages of block- and cell-based AMR, i.e., the nature of structured meshes and sharp regions of refinement. But, patch-based AMR has its own difficulties. For example, patch-based AMR typically cannot preserve symmetries of physics problems. In this paper, we will present an approach for a patch-based AMR for hydrodynamics simulations. The approach consists of clustering, symmetry preserving, mesh continuity, flux correction, communications, management of patches, and load balance. The special features of this patch-based AMR include symmetry preserving, efficiency of refinement across shock fronts and material interfaces, special implementation of flux correction, and patch management in parallel computing environments. To demonstrate the capability of the AMR framework, we will show both two- and three-dimensional hydrodynamics simulations with many levels of refinement.

Dai, William Wenlong [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

333

Contaminants in Used Lubricating Oils and Their Fate during Distillation/Hydrotreatment Re-Refining  

Science Journals Connector (OSTI)

Contaminants in Used Lubricating Oils and Their Fate during Distillation/Hydrotreatment Re-Refining ...

Dennis W. Brinkman; John R. Dickson

1995-01-01T23:59:59.000Z

334

Refining Crude Oil - Energy Explained, Your Guide To Understanding Energy -  

Gasoline and Diesel Fuel Update (EIA)

Oil and Petroleum Products > Refining Crude Oil Oil and Petroleum Products > Refining Crude Oil Energy Explained - Home What Is Energy? Forms of Energy Sources of Energy Laws of Energy Units and Calculators Energy Conversion Calculators British Thermal Units (Btu) Degree-Days U.S. Energy Facts State and U.S. Territory Data Use of Energy In Industry For Transportation In Homes In Commercial Buildings Efficiency and Conservation Energy and the Environment Greenhouse Gases Effect on the Climate Where Emissions Come From Outlook for Future Emissions Recycling and Energy Nonrenewable Sources Oil and Petroleum Products Refining Crude Oil Where Our Oil Comes From Imports and Exports Offshore Oil and Gas Use of Oil Prices and Outlook Oil and the Environment Gasoline Where Our Gasoline Comes From Use of Gasoline Prices and Outlook

335

Integration Strategy of Gasification Technology:? A Gateway to Future Refining  

Science Journals Connector (OSTI)

The historical evidence of the operation of a coal gasification plant goes as far back in time as 1878.1 The United State's first power plant based on coal gasification technology was installed in 1980.2 The concept of gasification has begun to attract much attention from the refining industry because of stringent environmental regulations on transportation fuel, slashing demands for fuel oils, and uncertainty in the availability of good crude oils. ... Therefore, it is a challenging task for refining industries to economically integrate gasification technology, and this is the major theme of the paper. ... Gasification is superior to many of the available power production and waste disposal technologies by addressing various issues together regarding environmental emissions, maintaining quality of refining products, and waste management. ...

Jhuma Sadhukhan; X. X. Zhu

2002-02-09T23:59:59.000Z

336

Effect of alumina nanoparticles in the fluid on heat transfer in double-pipe heat exchanger system  

Science Journals Connector (OSTI)

This study was performed to investigate the convective heat transfer coefficient of nanofluids made of several alumina ... transformer oil which flow through a double pipe heat exchanger system in the laminar flo...

Byung-Hee Chun; Hyun Uk Kang; Sung Hyun Kim

2008-09-01T23:59:59.000Z

337

TEMPERATURE-PROGRAMMED DESORPTION AND REACTION OF CO AND H2 ON ALUMINA-SUPPORTED RUTHENIUM CATALYST  

E-Print Network (OSTI)

over Group VIII Metal Catalysts" J.T. Kummer and P.H.and Fischer- Iron Catalyst", to be published. P.R. Wentrek,on Alumina-supported Ruthenium Catalyst" to be published. M.

Low, Gordon Gongngai

2011-01-01T23:59:59.000Z

338

Preparation and characterization of alumina?supported metal?carbonyl?derived model catalytic systems in UHV conditions  

Science Journals Connector (OSTI)

Active catalysts for metathesis of alkenes, hydrodesulfurization, and hydrogenation can be prepared by exposing a high?surface?area alumina support to molybdenum hexacarbonyl at room temperature. This strategy...

M. Kaltchev; W.T. Tysoe

339

Evidence of a barrier oxidation dependence on the interfacial magnetism in co/alumina based magnetic tunnel junctions  

E-Print Network (OSTI)

dependence on the interfacial magnetism in Co/alumina basedthe near-interfacial magnetism of Co electrodes in Co/of the interfacial magnetism on the chemical bonding between

Telling, N.D.; van der Laan, G.; Ladak, S.; Hicken, R.J.; Arenholz, E.

2005-01-01T23:59:59.000Z

340

Structures and charging of alpha-alumina (0001)/water interfaces studies by sum-frequency vibrational spectroscopy  

SciTech Connect

Sum-frequency vibrational spectroscopy in the OH stretch region was employed to study structures of water/{alpha}-Al{sub 2}O{sub 3} (0001) interfaces at different pH values. Observed spectra indicate that protonation and deprotonation of the alumina surface dominate at low and high pH, respectively, with the interface positively and negatively charged accordingly. The point of zero charge (p.z.c.) appears at pH {approx}6.3, which is close to the values obtained from streaming potential and second harmonic generation studies. It is significantly lower than the p.z.c. of alumina powder. The result can be understood from the pK values of protonation and deprotonation at the water/{alpha}-Al{sub 2}O{sub 3} (0001) interface. The p.z.c. of amorphous alumina was found to be similar to that of powder alumina.

Zhang, L.; Tian, C.; Waychunas, G.A.; Shen, Y.R.

2008-11-10T23:59:59.000Z

Note: This page contains sample records for the topic "aluminum alumina refining" 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

Helium-filled aluminum flight tubes  

NLE Websites -- All DOE Office Websites (Extended Search)

Helium-filled aluminum flight tubes. Helium-filled aluminum flight tubes. Detector housing for the CCD camera lens, mirror, and scintillator. For more information, contact Instrument Scientist: Hassina Bilheux, bilheuxhn@ornl.gov, 865.384.9630 neutrons.ornl.gov/instruments/HFIR/factsheets/Instrument-cg1d.pdf The CG-1D beam is used for neutron imaging measurements using a white beam. Apertures (with different diameters D (pinhole geometry) are used at the entrance of the helium-filled flight path to allow L/D variation from 400 to 800. L is the distance between the aperture and the detector (where the image is produced). Samples sit on a translation/ rotation stage for alignment and tomography purposes. Detectors for CG-1D include

342

Climate VISION: Private Sector Initiatives: Aluminum: Results  

Office of Scientific and Technical Information (OSTI)

Results Results The Aluminum Association and the federal government have document progress in the Climate Vision program. The results are measured by metrics developed by the industry, in partnership with the government, and reported. Progress will also be tracked under the umbrella of the Voluntary Aluminum Industrial Partnership website. Please check back on this website and the Energy Information Agency website for updates. In 2005, the industry achieved the goal set for 2010. A 56 percent reduction in direct process emissions per ton of production, including combined reductions in PFC's and CO2, exceeds the 53 percent commitment for 2010. Further progress is expected in the industry, however complications from high power costs and potential curtailments make predictions for further reductions

343

Experimental superplastic characterization of advanced aluminum alloys  

E-Print Network (OSTI)

of America Chairman of Advisory Committee: Dr. R. E. Goforth An investigation into the experimental superplastic characterization of advanced aluminum alloys consisted of the design and assembly of an experimental test facility for measuring the effects.... The experimental test apparatus designed and constructed is shown in Figure 2, with four major components assembled together to form the SPF testing system. The four components are the Instron 1137 Universal testing machine, Instron 3117 furnace and Instron...

Kopp, Christopher Carl

2012-06-07T23:59:59.000Z

344

Chapter 1 - Refining Heavy Oil and Extra-heavy Oil  

Science Journals Connector (OSTI)

The definitions of heavy oil, extra-heavy oil, and tar sand bitumen are inadequate insofar as the definitions rely upon a single physical property to define a complex feedstock. This chapter presents viable options to the antiquated definitions of the heavy feedstocks (heavy oil, extra-heavy oil, and tar sand bitumen) as well as an introduction to the various aspects of heavy feedstock refining in order for the reader to place each feedstock in the correct context of properties, behavior, and refining needs.

James G. Speight

2013-01-01T23:59:59.000Z

345

Petroleum Refining Operations: Key Issues, Advances, and Opportunities  

Science Journals Connector (OSTI)

A typical petroleum industry supply chain is composed of an exploration phase at the wellhead, crude procurement and storage logistics, transportation to the refineries, refinery operations, and distribution and delivery of its products (Figure 1). ... This network is used to transport crude from wellhead to refinery for processing, to transport intermediates between multisite refining facilities, and to transport finished products from product storage tanks to distribution centers and finally to the customers. ... In common-carrier pipelines, however, several refineries located at different sites use the same trunk line for shipping refined petroleum products to downstream output terminals. ...

Nikisha K. Shah; Zukui Li; Marianthi G. Ierapetritou

2010-12-10T23:59:59.000Z

346

National oil companies' presence to hike US refining competition  

SciTech Connect

This paper reports that the downstream segment of the U.S. petroleum business is virtually certain to become more competitive because of the growing presence of national oil companies in the country's refining industry. That's a forecast by New York investment firm Kidder Peabody. It cites a plan by Mexico's Petroleos Mexicanos (Pemex) to form a joint venture with Shell Oil Co. covering Shell's 225,000 b/d Deer Park, Tex., refinery as the latest example of national oil companies' movement into U.S. refining.

Not Available

1992-09-21T23:59:59.000Z

347

THE PROTOTYPE ALUMINUM - CARBON SINGLE, DOUBLE, AND TRIPLE BONDS: Al - CH3, Al = CH2, AND Al. = CH  

E-Print Network (OSTI)

three prototype Table II. aluminum-carbon bonds and theirPhysics THE PROTOTYPE ALUMINUM - CARBON SINGLE, DOUBLE, ANDLBL-l0871 The Prototype Aluminum - Carbon Single, Double.

Fox, Douglas J.

2011-01-01T23:59:59.000Z

348

Influence of argon and oxygen on charge-state-resolved ion energy distributions of filtered aluminum arcs  

E-Print Network (OSTI)

energy distributions of filtered aluminum arcs Johanna Roséndistributions (IEDs) in filtered aluminum vacuum arc plasmasfor vacuum arc plasmas. Aluminum plasma, for example,

Rosen, Johanna; Anders, Andre; Mraz, Stanislav; Atiser, Adil; Schneider, Jochen M.

2006-01-01T23:59:59.000Z

349

Lithium-aluminum-carbonate-hydroxide hydrate coatings on aluminum alloys: Composition, structure, and processing bath chemistry  

SciTech Connect

A new corrosion resistant coating, being designed for possible replacement of chromate conversion coatings on aluminum alloys, was investigated for composition, structure, and solubility using a variety of techniques. The stoichiometry of the material, prepared by immersion of 1100 Al alloy into a lithium carbonate-lithium hydroxide solution, was approximately Li{sub 2}Al{sub 4}CO{sub 3}(OH){sub 12}{center_dot}3H{sub 2}O. Processing time was shown to be dependent upon the bath pH, and consistent coating formation required supersaturation of the coating bath with aluminum. The exact crystal structure of this hydrotalcite material, hexagonal or monoclinic, was not determined. It was shown that both the bulk material and coatings with the same nominal composition and crystal structure could be formed by precipitation from an aluminum supersatured solution of lithium carbonate. {copyright} {ital 1996 Materials Research Society.}

Drewien, C.A.; Eatough, M.O.; Tallant, D.R.; Hills, C.R.; Buchheit, R.G. [Materials and Process Sciences Center, Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)

1996-06-01T23:59:59.000Z

350

INSTITUTE FOR SHOCK PHYSICSLaser-Shock Spall Experiments in Aluminum II: Interface Measurements  

E-Print Network (OSTI)

fracture in aluminum alloys at short time scales (10-8 s) · Role of PMMA backing material window -Changing-T6 or 1100-H14 aluminum targets approximately 110 m thick · PMMA with vapor deposited Al mirror Soda. (2006) * Advised by Yoshi Toyoda and Y. M. Gupta Aluminum Thickness (m) Aluminum Alloy Aluminum

Collins, Gary S.

351

Five Ways Aluminum Foil Is Advancing Science | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Five Ways Aluminum Foil Is Advancing Science Five Ways Aluminum Foil Is Advancing Science Five Ways Aluminum Foil Is Advancing Science September 7, 2012 - 5:33pm Addthis SLAC National Accelerator Laboratory uses massive quantities of aluminum foil to perform "bake out" of their equipment. In a typical bake out, the equipment is blanketed in foil, wrapped with electrical heat tape, and then covered in foil again. Heat tape is used to heat the metal chamber just enough to loosen any residues that could cause trouble. The aluminum foil helps spread the heat evenly. | Photo of SLAC SLAC National Accelerator Laboratory uses massive quantities of aluminum foil to perform "bake out" of their equipment. In a typical bake out, the equipment is blanketed in foil, wrapped with electrical heat tape, and then

352

Five Ways Aluminum Foil Is Advancing Science | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Five Ways Aluminum Foil Is Advancing Science Five Ways Aluminum Foil Is Advancing Science Five Ways Aluminum Foil Is Advancing Science September 7, 2012 - 5:33pm Addthis SLAC National Accelerator Laboratory uses massive quantities of aluminum foil to perform "bake out" of their equipment. In a typical bake out, the equipment is blanketed in foil, wrapped with electrical heat tape, and then covered in foil again. Heat tape is used to heat the metal chamber just enough to loosen any residues that could cause trouble. The aluminum foil helps spread the heat evenly. | Photo of SLAC SLAC National Accelerator Laboratory uses massive quantities of aluminum foil to perform "bake out" of their equipment. In a typical bake out, the equipment is blanketed in foil, wrapped with electrical heat tape, and then

353

Structural studies of alumina pillared hectorite using polyvinyl alcohol as a pillaring agent  

E-Print Network (OSTI)

of the clay's hydrated cations to be replaced with almost any desired cation by using simple ion exchange methods, allows for the preparation of pillared interlayered clays (PILC's). Homoionic exchange derivatives are readily achievable with simple... the pillaring precursor into A1203 pillars. The resulting alumina pillared clay (Al-PILC) is a stable microporous material with high specific surface area, although this porosity is mainly influenced by the method of preparation. 90 Occelli and Pinnavaia...

Kroenig, Andrea N

2012-06-07T23:59:59.000Z

354

Alumina-Forming Austenitics: A New Class of Heat-Resistant Stainless Steels  

SciTech Connect

A family of alumina (Al2O3)-forming austenitic (AFA) stainless steels is under development. These alloys offer the potential for significantly higher operating temperature and environmental durability than conventional chromia (Cr2O3)-forming stainless steels, without sacrificing other critical characteristics such as cost, creep resistance, and weldability. An overview of the alloy development approach and details of the oxidation and creep resistance properties achieved to date are presented.

Brady, Michael P [ORNL; Yamamoto, Yukinori [ORNL; Lu, Zhao Ping [ORNL; Maziasz, Philip J [ORNL; Liu, Chain T [ORNL; Pint, Bruce A [ORNL; Santella, Michael L [ORNL

2008-01-01T23:59:59.000Z

355

Department of Computing Stepwise Refinement in Event-B||CSP  

E-Print Network (OSTI)

in Event-B||CSP Part 1: Safety Steve Schneider, Helen Treharne and Heike Wehrheim March 12th 2011 #12;Stepwise Refinement in Event-B CSP Part 1: Safety Steve Schneider1 Helen Treharne1 Heike Wehrheim2 1, 2011 Contents 1 Introduction 3 2 CSP 3 2.1 Notation

Doran, Simon J.

356

Source: Energy Information Administration, Form EIA-782A, "Refiners...  

Annual Energy Outlook 2012 (EIA)

4. U.S. Refiner Wholesale Petroleum Product Prices Figure J F M A M J J A S O N D 0 20 40 60 80 100 120 1996 Cents per Gallon Excluding Taxes Kero-jet Propane No. 1 Distillate No....

357

Source: Energy Information Administration, Form EIA-782A, "Refiners...  

Gasoline and Diesel Fuel Update (EIA)

4. U.S. Refiner Wholesale Petroleum Product Prices Figure J F M A M J J A S O N D 0 20 40 60 80 100 120 1997 Cents per Gallon Excluding Taxes Kero-jet Propane No. 1 Distillate No....

358

Source: Energy Information Administration, Form EIA-782A, "Refiners...  

Gasoline and Diesel Fuel Update (EIA)

4. U.S. Refiner Wholesale Petroleum Product Prices Figure J F M A M J J A S O N D 0 20 40 60 80 100 120 1995 Cents per Gallon Excluding Taxes Kero-jet Propane No. 1 Distillate No....

359

Delaunay Refinement for Piecewise Smooth Complexes Siu-Wing Cheng  

E-Print Network (OSTI)

a Lipschitz-like property. A Delaunay refinement algo- rithm using the weighted Voronoi diagram is shown]. However, an algorithm that handles input as general as piecewise smooth complexes (PSC) is still lacking. There is a need in solid modeling to represent objects that are dimensionally or materially inhomogeneous [22

Cheng, Siu-Wing

360

Kenney: The USSOCOM Trinity The USSOCOM Trinity: Refining Special Operations  

E-Print Network (OSTI)

was that the American military would plan, train, and equip to conduct major combat operations on opposite sidesKenney: The USSOCOM Trinity 1 The USSOCOM Trinity: Refining Special Operations Commitment to 21st on the United States Special Operations Command and recommends means and methods to capitalize on current

Note: This page contains sample records for the topic "aluminum alumina refining" 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

Liver vasculature refinement with multiple 3D structuring element shapes  

Science Journals Connector (OSTI)

Delineating anatomical structures and other regions of interest is an important component of assisting and automating specific diagnostic, radiological, and surgical tasks. In this paper, a segmentation approach for liver region delineation is proposed, ... Keywords: 3D structuring element, Hysteresis thresholding, Mathematical morphology, Region growing, Texture analysis, Vessel tree refinement

Do-Yeon Kim

2014-08-01T23:59:59.000Z

362

Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...  

Gasoline and Diesel Fuel Update (EIA)

W W 78.6 W 85.7 81.8 W 69.3 73.8 See footnotes at end of table. 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District and State 176 Energy Information...

363

Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...  

Gasoline and Diesel Fuel Update (EIA)

W 70.5 78.9 W 76.0 83.6 W 69.2 75.2 See footnotes at end of table. 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District and State 176 Energy Information...

364

TOPICAL PAPER Potential Synergies and Challenges in Refining Cellulosic Biomass  

E-Print Network (OSTI)

TOPICAL PAPER Potential Synergies and Challenges in Refining Cellulosic Biomass to Fuels, Chemicals that can reduce greenhouse gas emissions, enhance energy security, improve the economy, dispose of such products, and sugar costs are predicted to drop with plant size as a result of economies of scale

California at Riverside, University of

365

Hydrogen Selective Thin Palladium-Copper Composite Membranes on Alumina Supports  

SciTech Connect

Thin and defect-free Pd–Cu composite membranes with high hydrogen permeances and selectivities were prepared by electroless plating of palladium and copper on porous alumina supports with pore sizes of 5 and 100 nm coated with intermediate layers. The intermediate layers on the 100 nm supports were prepared by the deposition of boehmite sols of different particle sizes, and provided a graded, uniform substrate for the formation of defect-free, ultra-thin palladium composite layers. The dependence of hydrogen flux on pressure difference was studied to understand the dominant mechanism of hydrogen transport through a Pd–Cu composite membrane plated on an alumina support with a pore size of 5 nm. The order in hydrogen pressure was 0.98, and indicated that bulk diffusion through the Pd–Cu layer was fast and the overall process was limited by external mass-transfer or a surface process. Scanning electron microscopy (SEM) images of the Pd–Cu composite membrane showed a uniform substrate created after depositing one intermediate layer on top of the alumina support and a dense Pd–Cu composite layer with no visible defects. Cross-sectional views of the membrane showed that the Pd–Cu composite layer had a top layer thickness of 160 nm (0.16 ?m), which is much thinner than previously reported.

Lim, Hankwon; Oyama, S. Ted

2011-08-15T23:59:59.000Z

366

Virtual Aluminum Castings An Industrial Application of Integrated...  

NLE Websites -- All DOE Office Websites (Extended Search)

Virtual Aluminum Castings An Industrial Application of Integrated Computational Materials Engineering Home Author: J. Allison, M. Li, C. Wolverton, X. Su Year: 2006 Abstract: The...

367

Fracture of welded aluminum thin-walled structures  

E-Print Network (OSTI)

A comprehensive methodology was developed in the thesis for damage prediction of welded aluminum thin-walled structures, which includes material modeling, calibration, numerical simulation and experimental verification. ...

Zheng, Li, Ph. D. Massachusetts Institute of Technology

2006-01-01T23:59:59.000Z

368

Achieving Carbon Neutrality in the Global Aluminum Industry  

Science Journals Connector (OSTI)

Table VII...illustrates a suggested carbon scoreboard. The global aluminum industry can become “carbon neutral,” reducing its current carbon print of 500 million metric tonnes per year... ...

Subodh Das

2012-02-01T23:59:59.000Z

369

Electrodeposition of magnesium and magnesium/aluminum alloys  

DOE Patents (OSTI)

Electrolytes and plating solutions for use in processes for electroplating and electroforming pure magnesium and alloys of aluminum and magnesium and also electrodeposition processes. An electrolyte of this invention is comprised of an alkali metal fluoride or a quaternary ammonium halide, dimethyl magnesium and/or diethyl magnesium, and triethyl aluminum and/or triisobutyl aluminum. An electrolyte may be dissolved in an aromatic hydrocarbon solvent to form a plating solution. The proportions of the component compounds in the electrolyte are varied to produce essentially pure magnesium or magnesium/aluminum alloys having varying selected compositions.

Mayer, A.

1988-01-21T23:59:59.000Z

370

Aluminum-doped Zinc Oxide Nanoink - Energy Innovation Portal  

NLE Websites -- All DOE Office Websites (Extended Search)

cells, photochromic windows, chemical sensors, and biosensors. Description The optoelectronic properties of AZO nanocrystals can be tuned by controlling their aluminum content....

371

Electrodeposition of magnesium and magnesium/aluminum alloys  

DOE Patents (OSTI)

Electrolytes and plating solutions for use in processes for electroplating and electroforming pure magnesium and alloys of aluminum and magnesium and also electrodeposition processes. An electrolyte of this invention is comprised of an alkali metal fluoride or a quaternary ammonium halide, dimethyl magnesium and/or diethyl magnesium, and triethyl aluminum and/or triisobutyl aluminum. An electrolyte may be dissolved in an aromatic hydrocarbon solvent to form a plating solution. The proportions of the component compounds in the electrolyte are varied to produce essentially pure magnesium or magnesium/aluminum alloys having varying selected compositions.

Mayer, Anton (Los Alamos, NM)

1988-01-01T23:59:59.000Z

372

Joining of parts via magnetic heating of metal aluminum powders  

DOE Patents (OSTI)

A method of joining at least two parts includes steps of dispersing a joining material comprising a multi-phase magnetic metal-aluminum powder at an interface between the at least two parts to be joined and applying an alternating magnetic field (AMF). The AMF has a magnetic field strength and frequency suitable for inducing magnetic hysteresis losses in the metal-aluminum powder and is applied for a period that raises temperature of the metal-aluminum powder to an exothermic transformation temperature. At the exothermic transformation temperature, the metal-aluminum powder melts and resolidifies as a metal aluminide solid having a non-magnetic configuration.

Baker, Ian

2013-05-21T23:59:59.000Z

373

Microsoft PowerPoint - Aluminum Concentrations in Storm Water...  

NLE Websites -- All DOE Office Websites (Extended Search)

publication or guarantee its technical correctness. Title: Solid and Dissolved Phase Aluminum in Storm Water Runoff on the Pajarito Plateau, Poster, Individual Permit for Storm...

374

Low-Cost Direct Bonded Aluminum (DBA) Substrates | Department...  

Energy Savers (EERE)

(DBA) Substrates Low-Cost Direct Bonded Aluminum (DBA) Substrates 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation...

375

ORNL: Low-Cost Direct Bonded Aluminum (DBA) Substrates (Agreement...  

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

Direct Bonded Aluminum (DBA) Substrates (Agreement ID:23278) 2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer...

376

ORNL: Low-Cost Direct Bonded Aluminum (DBA) Substrates (Agreement...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Low-Cost Direct Bonded Aluminum (DBA) Substrates H. -T. Lin, A. A. Wereszczak, and S. Waters Oak Ridge National Laboratory This presentation does not contain any proprietary,...

377

High-Temperature Aluminum Alloys | Department of Energy  

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

and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting pm044smith2012o.pdf More Documents & Publications High-Temperature Aluminum Alloys Vehicle...

378

Growing Silver Nanoparticles on Porous Alumina Templates In Situ to Produce Improved SERS Substrates Benjamin Revard, Georgie Tech, IREP 2010 Fellow  

E-Print Network (OSTI)

of the porous alumina templates and reduced by the tin according to the reaction Sn2+ + 2Ag1+ -> Sn4+ + 2Ag

Li, Mo

379

Ab Initio Study of the Interaction of Water with Cluster Models of the Aluminum Terminated (0001) r-Aluminum Oxide Surface  

E-Print Network (OSTI)

Ab Initio Study of the Interaction of Water with Cluster Models of the Aluminum Terminated (0001) r-Aluminum to hydroxylation of the aluminum terminated surface, the two water process was found to be the most exothermic, occurring within 10-2 s. I. Introduction As one of the most important ceramic materials, R-aluminum oxide

Schlegel, H. Bernhard

380

Economic and environmental evaluation of end-of-life aerospace aluminum options using optimization methods  

E-Print Network (OSTI)

The benefits of recycling have long been understood and the conspicuous energy savings of secondary aluminum production have caused aluminum recycling to increase. Obsolete aircraft are a valuable source of aluminum scrap ...

Chen, Emily, S.B. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "aluminum alumina refining" 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

Long-term and Highly Aluminum-resistant Root Elongation in a Camphor Tree Cinnamomum camphora  

E-Print Network (OSTI)

for the detoxification of aluminum in roots of tea plant (Oda A, Yamamoto F, Effects of aluminum on growth and biomassT, Beneficial effect of aluminum on growth of plants adapted

Osawa, Hiroki

2009-01-01T23:59:59.000Z

382

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AISI 4340 STEEL MODIFIED WITH ALUMINUM AND SILICON  

E-Print Network (OSTI)

Met. Trans. 1,2163 (1972). Aluminum_~n Iron~, S. L. Case andSTEEL MODIFIED WITH ALUMINUM AND SILIC ON ManjeshwarThe influence of additions of aluminum and combinations of

Bhat, M.S.

2010-01-01T23:59:59.000Z

383

Fabrication and applications of nanocomposite structures using anodized aluminum oxide membranes  

E-Print Network (OSTI)

Hall, Process of Reducing Aluminum from its Fluoride SaltsFrary and Z. Jeffries, Aluminum and its Production, McGraw-1 (1948). J. E. Hatch, Aluminum Properties and Physical

Gapin, Andrew Isaac

2007-01-01T23:59:59.000Z

384

Aluminum-tungsten fiber composites with cylindrical geometry and controlled architecture of tungsten reinforcement  

E-Print Network (OSTI)

Chung, D. “Silicon-Aluminum Network Composites Fabricated byFigure 95 - Fine model with initial aluminum matrix failure.slight necking of the aluminum matrix. Note failed elements

Lucchese, Carl Joesph

2010-01-01T23:59:59.000Z

385

Low-Cycle Fatigue of Ultra-Fine-Grained Cryomilled 5083 Aluminum Alloy  

E-Print Network (OSTI)

of an Ultra-Fine Grained Aluminum Alloy, Poster Session,Grained Cryomilled 5083 Aluminum Alloy J.L. WALLEY, E.J.consistent with other MA aluminum alloys and is attributed

Walley, J. L.; Lavernia, E. J.; Gibeling, J. C.

2009-01-01T23:59:59.000Z

386

Control of residual aluminum from conventional treatment to improve reverse osmosis performance  

E-Print Network (OSTI)

2005. The Role of Dissolved Aluminum in Silica Chemistry forDraft Public Health Goal for Aluminum in Drinking Water .1994. Control of Residual Aluminum in Filtered Water . AWWA,

Gabelich, C J; Ishida, K P; Gerringer, F W; Evangelista, R; Kalyan, M; Suffet, I H

2006-01-01T23:59:59.000Z

387

Thermal coatings for titanium-aluminum alloys  

SciTech Connect

Titanium aluminides and titanium alloys are candidate materials for use in hot structure and heat-shield components of hypersonic vehicles because of their good strength-to-weight characteristics at elevated temperature. However, in order to utilize their maximum temperature capability, they must be coated to resist oxidation and to have a high total remittance. Also, surface catalysis for recombination of dissociated species in the aerodynamic boundary layer must be minimized. Very thin chemical vapor deposition (CVD) coatings are attractive candidates for this application because of durability and very light weight. To demonstrate this concept, coatings of boron-silicon and aluminum-boron-silicon compositions were applied to the titanium-aluminides alpha2 (Ti-14Al-21Nb), super-alpha2 (Ti-14Al-23-Nb-2V), and gamma (Ti-33Al-6Nb-1Ta) and to the titanium alloy beta-21S (Ti-15Mo-3Al-3Nb-0.2Si). Coated specimens of each alloy were subjected to a set of simulated hypersonic vehicle environmental tests to determine their properties of oxidation resistance, surface catalysis, radiative emittance, and thermal shock resistance. Surface catalysis results should be viewed as relative performance only of the several coating-alloy combinations tested under the specific environmental conditions of the LaRC Hypersonic Materials Environmental Test System (HYMETS) arc-plasma-heated hypersonic wind tunnel. Tests were also conducted to evaluate the hydrogen transport properties of the coatings and any effects of the coating processing itself on fatigue life of the base alloys. Results are presented for three types of coatings, which are as follows: (1) a single layer boron silicon coating, (2) a single layer aluminum-boron-silicon coating, and (3) a multilayer coating consisting of an aluminum-boron-silicon sublayer with a boron-silicon outer layer.

Cunnington, G.R.; Clark, R.K.; Robinson, J.C.

1993-04-01T23:59:59.000Z

388

Composition of incipient passivating layers on heat-rejecting aluminum in carboxylate- and silicate-inhibited coolants: Correlation with ASTM D 4340 weight losses  

SciTech Connect

X-ray photoelectron spectroscopy identified compositional differences between passivating layers initially formed in carboxylated coolants, in silicated coolants, and in a mixture thereof on well-controlled 319 aluminum surfaces under heat-rejecting conditions. The layer formed in silicated coolant was primarily silica, while that in carboxylated coolant was primarily hydrated alumina. Competition between inhibitor packages when carboxylated coolant was contaminated from the start with low levels of silicated coolant produced films which were not simply patchwise mixtures of the pure-coolant film types. The surface analytical results aid the interpretation of subtle differences in weight losses under the ASTM Standard Test Method for Corrosion of Cast Aluminum Alloys in Engine Coolants Under Heat-Rejecting Conditions (D 4340) in carboxylated versus silicated coolants that became more pronounced when testing was carried out at a vehicle-like 50% coolant concentration. Results from time-resolved D4340 measurements and from a two-step cleaning procedure further contribute towards proper evaluation of D4340 weight losses in the different coolant types.

Wagner, F.T.; Moylan, T.E.; Simko, S.J.; Militello, M.C. [General Motors R and D Center, Warren, MI (United States)

1999-08-01T23:59:59.000Z

389

E-Print Network 3.0 - aluminum based composites Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

UT-BATTELLE FOR THE DEPARTMENT OF ENERGY Summary: power electronics. Testing of aluminum conductor, composite-reinforced (ACCR), a new 3M composite... embedded in an aluminum...

390

E-Print Network 3.0 - aluminum strand coating Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

evaporate nickel and aluminum and then reactively deposit NiAl bond coats... coat's oxidation resistance is achieved by the use of sufficient aluminum to result in the...

391

E-Print Network 3.0 - aluminum joined employing Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Conversion and Utilization 3 ENS'05 Paris, France, 14-16 December 2005 CONTROL POROUS PATTERN OF ANODIC ALUMINUM OXIDE Summary: tightly clamped aluminum foils, rather than the...

392

E-Print Network 3.0 - aluminum alloy eroded Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

form January 21, 1999) Introduction The use of aluminum alloys for automotive body... behavior in aluminum alloy 6022. Experimental Procedure ... Source: Laughlin, David E. -...

393

Method of forming aluminum oxynitride material and bodies formed by such methods  

DOE Patents (OSTI)

Methods of forming aluminum oxynitride (AlON) materials include sintering green bodies comprising aluminum orthophosphate or another sacrificial material therein. Such green bodies may comprise aluminum, oxygen, and nitrogen in addition to the aluminum orthophosphate. For example, the green bodies may include a mixture of aluminum oxide, aluminum nitride, and aluminum orthophosphate or another sacrificial material. Additional methods of forming aluminum oxynitride (AlON) materials include sintering a green body including a sacrificial material therein, using the sacrificial material to form pores in the green body during sintering, and infiltrating the pores formed in the green body with a liquid infiltrant during sintering. Bodies are formed using such methods.

Bakas, Michael P. (Ammon, ID) [Ammon, ID; Lillo, Thomas M. (Idaho Falls, ID) [Idaho Falls, ID; Chu, Henry S. (Idaho Falls, ID) [Idaho Falls, ID

2010-11-16T23:59:59.000Z

394

E-Print Network 3.0 - aluminum automotive components Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Department, University of New Hampshire Collection: Engineering 24 1 Introduction 1.1 Aluminum alloys Summary: 1 1 Introduction 1.1 Aluminum alloys Automotive industry demands...

395

E-Print Network 3.0 - aluminum alloy matrix Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

studied at different length scales. At an atomic scale the aluminum... of plasticity, fracture, is studied. Microstructure and properties of aluminum-scandium alloys Recently......

396

E-Print Network 3.0 - aluminum nitride ceramics Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Emily Parker, Vanni Lughi, Noel C. MacDonald Summary: , biocompatibility, and high fracture toughness. As a piezoelectric ceramic, aluminum nitride is compatible... Aluminum...

397

E-Print Network 3.0 - aluminum alloys grain Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

aluminum... -lithium and aluminum-gallium has been studied. In ... Source: DOE Office of Energy Efficiency and Renewable Energy, Hydrogen, Fuel Cells and Infrastructure...

398

E-Print Network 3.0 - aluminum casting technology Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

summarizes attempts of incorporating fly ash into aluminum castings to decrease the energy content, material... . It is shown that fly ash can be incorporated in aluminum...

399

E-Print Network 3.0 - aluminum energy conservation Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

summarizes attempts of incorporating fly ash into aluminum castings to decrease the energy content, material... of aluminum melts containing up to 10 vol.% fly ash particles....

400

E-Print Network 3.0 - aluminum shape casting Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

summarizes attempts of incorporating fly ash into aluminum castings to decrease the energy content, material... . It is shown that fly ash can be incorporated in aluminum...

Note: This page contains sample records for the topic "aluminum alumina refining" 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

E-Print Network 3.0 - aluminum cars Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Sample search results for: aluminum cars Page: << < 1 2 3 4 5 > >> 1 ORNLTM-1999157 ENERGY DIVISION Summary: aluminum content in passenger cars. General Motors is increasing...

402

E-Print Network 3.0 - aluminum hydroxide complexes Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Organic Acids as Competing Sorbates on Amorphous Aluminum Oxide. (3791) Authors: K... sorption of P to amorphous aluminum oxides. Alum initially decreases litter pH, so the...

403

Characteristics of Aluminum Biosorption by Sargassum fluitans Biomass  

E-Print Network (OSTI)

Characteristics of Aluminum Biosorption by Sargassum fluitans Biomass Hak Sung Lee1, * and Bohumil3A 2B2, Canada Abstract: Biomass of nonliving brown seaweed Sargassum fluitans pretreated.5. There are indications that the biomass hydroxyl groups were involved in sequestering the aluminum in the form

Volesky, Bohumil

404

Aluminum Reactions and Problems in Municipal Solid Waste Landfills  

E-Print Network (OSTI)

Aluminum Reactions and Problems in Municipal Solid Waste Landfills G. Vincent Calder, Ph.D.1 ; and Timothy D. Stark, Ph.D., P.E., F.ASCE2 Abstract: Aluminum enters municipal solid waste MSW landfills from problematic for landfill operations by generating undesirable heat, liquid leachate, and gases

405

Atlantic Basin Refining Dynamics from U.S. Perspective  

Gasoline and Diesel Fuel Update (EIA)

“This presentation focuses on the current refining situation in the Atlantic Basin, “This presentation focuses on the current refining situation in the Atlantic Basin, Page 1 including some discussion on how we got here, and on drivers that will influence the next 5 years. I will focus on three topics today that are critical to the petroleum product dynamics of Page 2 the Atlantic Basin over the next several years. The first is product demand growth - something that has been affected both by the recession and legislation. Next I will cover the supply situation for gasoline and distillates in the Atlantic Basin, since Europe and the U.S. are closely entwined in these markets. Last, we will visit the outlook for those drivers affecting profitability - an area of large uncertainty. I will begin today with a short discussion of important underlying long-term trends in U.S.

406

,"U.S. Sales for Resale, Total Refiner Motor Gasoline Sales Volumes...  

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

for Refiner Gasoline Volumes" "Sourcekey","A103700001" "Date","U.S. Total Gasoline WholesaleResale Volume by Refiners (Thousand Gallons per Day)" 30331,217871.4 30362,217946.8...

407

Development of miscella refining process for cottonseed oil-isopropyl alcohol system: laboratory-scale evaluations  

E-Print Network (OSTI)

A technologically feasible cottonseed oil-isopropyl alcohol (IPA) miscella refining process was developed to produce high quality cottonseed oil. Individual steps necessary to refine cottonseed oil-IPA miscella were determined and improved...

Chau, Chi-Fai

1994-01-01T23:59:59.000Z

408

The Extraction?Flocculation Re-refining Lubricating Oil Process Using Ternary Organic Solvents  

Science Journals Connector (OSTI)

The Extraction?Flocculation Re-refining Lubricating Oil Process Using Ternary Organic Solvents ... Res., 1997, 36 (9), ... Waste lubricating oils may be re-refined with organic solvents that dissolve base oil and segregate the additives and solid particles. ...

J. P. Martins

1997-09-02T23:59:59.000Z

409

Life cycle and matrix analyses for re-refined Oil in Japan  

Science Journals Connector (OSTI)

Unstable market systems and consumer preferences for virgin oil have inhibited the development of waste oil re-refining in Japan. In this papery comparative life cycle inventories were developed for re-refining w...

Chie Nakaniwa; Thomas E. Graedel

2002-03-01T23:59:59.000Z

410

On the limits of refinement-testing for model-checking CSP  

Science Journals Connector (OSTI)

Refinement-checking, as embodied in tools like FDR, PAT and ProB, is a popular approach for model-checking refinement-closed predicates of CSP processes. We consider the limits of this ... denotational predicate ...

Toby Murray

2013-03-01T23:59:59.000Z

411

RFA-14-0001 - In the Matter of Commonwealth Oil Refining Company...  

Office of Environmental Management (EM)

RFA-14-0001 - In the Matter of Commonwealth Oil Refining Company, Inc.Commonwealth of Puerto Rico RFA-14-0001 - In the Matter of Commonwealth Oil Refining Company, Inc....

412

Fact #676: May 23, 2011 U.S. Refiners Produce about 19 Gallons...  

Energy Savers (EERE)

6: May 23, 2011 U.S. Refiners Produce about 19 Gallons of Gasoline from a Barrel of Oil Fact 676: May 23, 2011 U.S. Refiners Produce about 19 Gallons of Gasoline from a Barrel of...

413

REFINING AND END USE STUDY OF COAL LIQUIDS  

SciTech Connect

This document summarizes all of the work conducted as part of the Refining and End Use Study of Coal Liquids. There were several distinct objectives set, as the study developed over time: (1) Demonstration of a Refinery Accepting Coal Liquids; (2) Emissions Screening of Indirect Diesel; (3) Biomass Gasification F-T Modeling; and (4) Updated Gas to Liquids (GTL) Baseline Design/Economic Study.

Unknown

2002-01-01T23:59:59.000Z

414

Superconducting structure with layers of niobium nitride and aluminum nitride  

DOE Patents (OSTI)

A superconducting structure is formed by depositing alternate layers of aluminum nitride and niobium nitride on a substrate. Deposition methods include dc magnetron reactive sputtering, rf magnetron reactive sputtering, thin-film diffusion, chemical vapor deposition, and ion-beam deposition. Structures have been built with layers of niobium nitride and aluminum nitride having thicknesses in a range of 20 to 350 Angstroms. Best results have been achieved with films of niobium nitride deposited to a thickness of approximately 70 Angstroms and aluminum nitride deposited to a thickness of approximately 20 Angstroms. Such films of niobium nitride separated by a single layer of aluminum nitride are useful in forming Josephson junctions. Structures of 30 or more alternating layers of niobium nitride and aluminum nitride are useful when deposited on fixed substrates or flexible strips to form bulk superconductors for carrying electric current. They are also adaptable as voltage-controlled microwave energy sources.

Murduck, James M. (Lisle, IL); Lepetre, Yves J. (Lauris, FR); Schuller, Ivan K. (Woodridge, IL); Ketterson, John B. (Evanston, IL)

1989-01-01T23:59:59.000Z

415

Superconducting structure with layers of niobium nitride and aluminum nitride  

DOE Patents (OSTI)

A superconducting structure is formed by depositing alternate layers of aluminum nitride and niobium nitride on a substrate. Deposition methods include dc magnetron reactive sputtering, rf magnetron reactive sputtering, thin-film diffusion, chemical vapor deposition, and ion-beam deposition. Structures have been built with layers of niobium nitride and aluminum nitride having thicknesses in a range of 20 to 350 Angstroms. Best results have been achieved with films of niobium nitride deposited to a thickness of approximately 70 Angstroms and aluminum nitride deposited to a thickness of approximately 20 Angstroms. Such films of niobium nitride separated by a single layer of aluminum nitride are useful in forming Josephson junctions. Structures of 30 or more alternating layers of niobium nitride and aluminum nitride are useful when deposited on fixed substrates or flexible strips to form bulk superconductors for carrying electric current. They are also adaptable as voltage-controlled microwave energy sources. 8 figs.

Murduck, J.M.; Lepetre, Y.J.; Schuller, I.K.; Ketterson, J.B.

1989-07-04T23:59:59.000Z

416

Evolutions in 3D numerical relativity using fixed mesh refinement  

E-Print Network (OSTI)

We present results of 3D numerical simulations using a finite difference code featuring fixed mesh refinement (FMR), in which a subset of the computational domain is refined in space and time. We apply this code to a series of test cases including a robust stability test, a nonlinear gauge wave and an excised Schwarzschild black hole in an evolving gauge. We find that the mesh refinement results are comparable in accuracy, stability and convergence to unigrid simulations with the same effective resolution. At the same time, the use of FMR reduces the computational resources needed to obtain a given accuracy. Particular care must be taken at the interfaces between coarse and fine grids to avoid a loss of convergence at higher resolutions, and we introduce the use of "buffer zones" as one resolution of this issue. We also introduce a new method for initial data generation, which enables higher-order interpolation in time even from the initial time slice. This FMR system, "Carpet", is a driver module in the freely available Cactus computational infrastructure, and is able to endow generic existing Cactus simulation modules ("thorns") with FMR with little or no extra effort.

Erik Schnetter; Scott H. Hawley; Ian Hawke

2004-03-02T23:59:59.000Z

417

On the mechanism of aluminum ignition in steam explosions  

Science Journals Connector (OSTI)

An available theory [Epstein, M., Fauske, H.K., 1994. A crystallization theory of underwater aluminum ignition. Nucl. Eng. Des. 146, 147–164] of the ignition of aluminum melt drops under water, which is based on the assumption that the aluminum oxide (Al2O3) drop-surface skin first appears in a metastable molten state, is compared with existing experimental data on the ignition of aluminum drops behind shock waves in water [Theofanous, T.G., Chen, X., DiPiazza, P., Epstein, M., Fauske, H.K., 1994. Ignition of aluminum droplets behind shock waves in water, Phys. Fluids 6, 3513–3515]. The predicted and measured ignition temperature of about 1770 K coincides approximately with the spontaneous nucleation temperature of supercooled liquid Al2O3 (1760 K). This suggests that the crystallization of the oxide layer represents a strong ‘barrier’ to aluminum drop ignition under water. Apparently a similar interpretation is applicable to aluminum drop ignition in gaseous oxidizing atmospheres. We conclude from the theory that the low-temperature aluminum ignitions (in the range 1100–1600 K) that have been observed during steam explosions are a consequence of the short aluminum drop oxidation times in this environment relative to the characteristic time for Al2O3 crystallization. Several aspects of the aluminum drop/shock interaction experiments besides ignition are discussed in the paper. In particular, the experiments provide strong evidence that during the course of a vapor explosion metal fragmentation occurs via a thermal mechanism at low pressure and precedes the development of a high-pressure shock.

M Epstein; H.K Fauske; T.G Theofanous

2000-01-01T23:59:59.000Z

418

Refinement and verification of concurrent systems specified in ObjectZ and CSP  

E-Print Network (OSTI)

Refinement and verification of concurrent systems specified in Object­Z and CSP Graeme Smith­Z and CSP. A common semantic basis for the two languages enables a unified method of refinement to be used, based upon CSP refinement. To enable state­based techniques to be used for the Object­Z components

Smith, Graeme

419

A Multi-Tiered Genetic Algorithm for Data Mining and Hypothesis Refinement  

E-Print Network (OSTI)

. The second stage of testing was on the ability to take results from a previous algorithm and perform refinement on the data model. Initially, Arcanum was used to refine its own data models. Of the six data models used for hypothesis refinement, Arcanum...

Taylor, Christopher M.

2009-01-01T23:59:59.000Z

420

Nanostructured lithium-aluminum alloy electrodes for lithium-ion batteries.  

SciTech Connect

Electrodeposited aluminum films and template-synthesized aluminum nanorods are examined as negative electrodes for lithium-ion batteries. The lithium-aluminum alloying reaction is observed electrochemically with cyclic voltammetry and galvanostatic cycling in lithium half-cells. The electrodeposition reaction is shown to have high faradaic efficiency, and electrodeposited aluminum films reach theoretical capacity for the formation of LiAl (1 Ah/g). The performance of electrodeposited aluminum films is dependent on film thickness, with thicker films exhibiting better cycling behavior. The same trend is shown for electron-beam deposited aluminum films, suggesting that aluminum film thickness is the major determinant in electrochemical performance regardless of deposition technique. Synthesis of aluminum nanorod arrays on stainless steel substrates is demonstrated using electrodeposition into anodic aluminum oxide templates followed by template dissolution. Unlike nanostructures of other lithium-alloying materials, the electrochemical performance of these aluminum nanorod arrays is worse than that of bulk aluminum.

Hudak, Nicholas S.; Huber, Dale L.

2010-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "aluminum alumina refining" 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

Kinetic studies of the water gas shift reaction on a sulfided cobalt/molybdena/alumina catalyst  

SciTech Connect

In this study, the applicability of low temperature oxygen chemisorption (LTOC) to measure the specific surface area of several rare-earth oxides (La, Ce, Pr, Nd, Tb) and the kinetics of the water-gas shift reaction over a sulfided cobalt-molybdena-alumina (AMOCAT 1A) catalyst are investigated. The LTOC results indicate that oxygen is possibly adsorbed in the molecular form, O/sub 2//sup -/, as observed by others after heat treatment of these oxides in vacuum. Lanthana and ceria were found to have ratios of total surface area to LTOC similar to those of chromia and molybdena respectively, after a comparable pretreatment. Furthermore, ceria is deduced to exist as a monolayer on the alumina support at loadings below 12%. An additional hour of reduction after the 6 hours of reduction shows a significant increase in LTOC on lanthana, neodymia and terbia which may be due to phase changes exhibited by these polymorphic oxides. The kinetics of the water-gas shift reaction has been extensively studied on iron oxide (high temperature shift) and copper oxide (low temperature shift) based catalysts. This investigation establishes the kinetics over a sulfided cobalt-molybdena-alumina (AMOCAT 1A) catalyst in the medium temperature shift range, 250-300/sup 0/C. The catalyst was sulfided in-situ in a high pressure integrated Berty reactor system. Reaction rates were measured for different CO/H/sub 2/O feed ratios in the range 0.3-3.0, with and without CO/sub 2/ in the feed. The reaction was carried out at several pressures in the range 5-27 atm. and GHSV's in the range 4800-2400 hr/sup 1/.

Srivatsa, N.R.

1987-01-01T23:59:59.000Z

422

Nearly equidistant single swift heavy ion impact sites through nanoporous alumina masks  

SciTech Connect

A semi-ordered pattern of 70 MeV Ag single ion impact sites on a fused silica sample was achieved by irradiation through a free-standing 10 {mu}m through-pore ordered nanoporous alumina membrane. The membranes were fabricated by constant voltage anodization in oxalic acid with a two-step replication process. An apparatus and a method were developed to realize the alignment of the pores parallel to the ion beam. Measurements of the surface, by atomic force microscopy, confirm the presence of a semi-ordered pattern of single ion impact sites.

Cauchy, Xavier; Roorda, Sjoerd [Departement de Physique, Universite de Montreal, C.P. 6128, Succursale Centre-Ville, Montreal, Quebec, H3C 3J7 (Canada)

2013-04-19T23:59:59.000Z

423

Optimization of Nd: YAG Laser Marking of Alumina Ceramic Using RSM And ANN  

SciTech Connect

The present research papers deals with the artificial neural network (ANN) and the response surface methodology (RSM) based mathematical modeling and also an optimization analysis on marking characteristics on alumina ceramic. The experiments have been planned and carried out based on Design of Experiment (DOE). It also analyses the influence of the major laser marking process parameters and the optimal combination of laser marking process parametric setting has been obtained. The output of the RSM optimal data is validated through experimentation and ANN predictive model. A good agreement is observed between the results based on ANN predictive model and actual experimental observations.

Peter, Josephine; Doloi, B.; Bhattacharyya, B. [Production Engineering Department, Jadavpur University, Kolkata (India)

2011-01-17T23:59:59.000Z

424

Influence of preparation method on the characteristics of Alumina-Yttria catalysts  

Science Journals Connector (OSTI)

Alumina-Yttria (1:1) was prepared from nitrate by coprecipitation with aqueous NH3 and urea. The structure, thermal stability and surface properties of the catalysts were determined by XRD, DTA, XPS and IR measurements. Method of precipitation does not affect the valence state of the component atoms and the samples were found to be amorphous. Morphological studies by SEM indicated a uniform nature for urea precipitated catalyst and the catalyst had low surface area. An acidity maximum was observed for catalyst precipitated with NH3. Catalyst prepared by urea precipitation showed more basicity and maximum activity for (+)-limonene oxide and 3-carene oxide isomerization.

J. Jayasree; C.S. Narayanan

1995-01-01T23:59:59.000Z

425

A MODERN INTERPRETATION OF THE BARNEY DIAGRAM FOR ALUMINUM SOLUBILITY IN TANK WASTE  

SciTech Connect

Experimental and modeling studies of aluminum solubility in Hanford tank waste have been developed and refined for many years in efforts to resolve new issues or develop waste treatment flowsheets. The earliest of these studies was conducted by G. Scott Barney, who performed solubility studies in highly concentrated electrolyte solutions to support evaporator campaign flowsheets in the 1970's. The 'Barney Diagram', a term still widely used at Hanford today, suggested gibbsite ({gamma}-Al(OH){sub 3}) was much more soluble in tank waste than in simple sodium hydroxide solutions. These results, which were highly surprising at the time, continue to be applied to new situations where aluminum solubility in tank waste is of interest. Here, we review the history and provide a modern explanation for the large gibbsite solubility observed by Barney, an explanation based on basic research that has been performed and published in the last 30 years. This explanation has both thermodynamic and kinetic aspects. Thermodynamically, saturated salt solutions stabilize soluble aluminate species that are minor components in simple sodium hydroxide solutions. These species are the aluminate dimer and the sodium-aluminate ion-pair. Ion-pairs must be present in the Barney simulants because calculations showed that there was insufficient space between the highly concentrated ions for a water molecule. Thus, most of the ions in the simulants have to be ion-paired. Kinetics likely played a role as well. The simulants were incubated for four to seven days, and more recent data indicate that this was unlikely sufficient time to achieve equilibrium from supersaturation. These results allow us to evaluate applications of the Barney results to current and future tank waste issues or flowsheets.

REYNOLDS JG; REYNOLDS DA (DECEASED)

2009-12-16T23:59:59.000Z

426

Mr. Mark Jackson Aluminum Company of America  

Office of Legacy Management (LM)

_ _ of Energy Washington, DC 20565 Mr. Mark Jackson Aluminum Company of America 100 Technical Drive Alcoa Center, Pennsylvania 15069-0001 Dear Mr. Jackson: At,the request of the U.S. Department of Energy and with the consent of your company, Oak Ridge National Laboratory performed a radiological survey of the former ALCOA Research Labo,ratory at 600 Freeport Road in New Kensington, Pennsylvania. Three copies of the radiological survey report are enclosed for your information and use. An additional radiological survey was also performed at the former ALCOA New Kensington Works at Pine and Ninth Streets in New Kensington. This property was formerly owned and operated by ALCOA and was utilized at one time for uranium processing activities by DOE's predecessor, the Manhattan Engineer

427

ADVANCED CERAMIC COMPOSITES FOR MOLTEN ALUMINUM CONTACT APPLICATIONS  

SciTech Connect

A new refractory material which was developed for use in molten aluminum contact applications was shown to exhibit improved corrosion and wear resistance leading to improved thermal management through reduced heat losses caused by refractory thinning and wastage. This material was developed based on an understanding of the corrosion and wear mechanisms associated with currently used aluminum contact refractories under a U.S. Department of Energy funded project to investigate multifunctional refractory materials for energy efficient handling of molten metals. This new material has been validated through an industrial trial at a commercial aluminum rod and cable mill. Material development and results of this industrial validation trial are discussed.

Hemrick, James Gordon [ORNL] [ORNL; Peters, Klaus-Markus [ORNL] [ORNL

2009-01-01T23:59:59.000Z

428

Aluminum foam, ALPORAS: The production process, properties and applications  

SciTech Connect

The production of foamed aluminum has long been considered difficult to realize because of such problems as the low foamability of molten metal, the varying size of cellular structures, solidification shrinkage and so on. Recently these problems have been solved by a number of researchers and some manufacturers produce foamed aluminum by their own methods. The authors have been employing a batch casting process and manufacturing foamed aluminum under the tradename ALPORAS{reg_sign} since 1986. This paper presents the manufacturing process, physical properties and some typical applications of ALPORAS.

Miyoshi, T.; Itoh, M. [Shinko Wire Co., Ltd., Amagasaki (Japan); Akiyama, S.; Kitahara, A. [Kyushu National Industrial Research Inst., Tosu (Japan). Material Engineering Dept.

1998-12-31T23:59:59.000Z

429

Photoelectron spectroscopy of boron aluminum hydride cluster anions  

SciTech Connect

Boron aluminum hydride clusters are studied through a synergetic combination of anion photoelectron spectroscopy and density functional theory based calculations. Boron aluminum hydride cluster anions, B{sub x}Al{sub y}H{sub z}{sup ?}, were generated in a pulsed arc cluster ionization source and identified by time-of-flight mass spectrometry. After mass selection, their photoelectron spectra were measured by a magnetic bottle-type electron energy analyzer. The resultant photoelectron spectra as well as calculations on a selected series of stoichiometries reveal significant geometrical changes upon substitution of aluminum atoms by boron atoms.

Wang, Haopeng; Zhang, Xinxing; Ko, Yeon Jae; Gantefoer, Gerd; Bowen, Kit H., E-mail: kbowen@jhu.edu, E-mail: kiran@mcneese.edu [Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218 (United States); Li, Xiang [Center for Space Science and Technology, University of Maryland–Baltimore County, Baltimore, Maryland 21250 (United States)] [Center for Space Science and Technology, University of Maryland–Baltimore County, Baltimore, Maryland 21250 (United States); Kiran, Boggavarapu, E-mail: kbowen@jhu.edu, E-mail: kiran@mcneese.edu [Department of Chemistry and Physics, McNeese State University, Lake Charles, Louisiana 70609 (United States)] [Department of Chemistry and Physics, McNeese State University, Lake Charles, Louisiana 70609 (United States); Kandalam, Anil K. [Department of Physics, West Chester University, West Chester, Pennsylvania 19383 (United States)] [Department of Physics, West Chester University, West Chester, Pennsylvania 19383 (United States)

2014-04-28T23:59:59.000Z

430

GENETIC TRANSFORMATION AND HYBRIDIZATION Bacterial citrate synthase expression and soil aluminum tolerance  

E-Print Network (OSTI)

GENETIC TRANSFORMATION AND HYBRIDIZATION Bacterial citrate synthase expression and soil aluminum that were more aluminum-tolerant than the non-transgenic control, confirming that citrate synthase overexpression can be a useful tool to help achieve aluminum tolerance. Keywords Acid soils Á Aluminum toxicity Á

Parrott, Wayne

431

ALUMINUM-BRIDGED BISGLYOXIMATO COBALT COMPLEXES: SYNTHESIS AND ELECTROCHEMICAL PROTON REDUCTION PROPERTIES  

E-Print Network (OSTI)

194 CHAPTER 6 ALUMINUM-BRIDGED BISGLYOXIMATO COBALT COMPLEXES: SYNTHESIS AND ELECTROCHEMICAL PROTON diglyoximato complexes connected by one or two aluminum bridges are described. The aluminum centers that the number of aluminum bridges and the nature of the substituents on the phenoxide ligands significantly

Winfree, Erik

432

Alumina reinforced tetragonal zirconia (TZP) composites. [Annual report, February 16, 1994--February 15, 1995  

SciTech Connect

Objective is to develop high-strength and high-toughness ceramic composites by combining mechanisms of platelet, whisker or fiber reinforcement with transformation toughening. The approach being used includes reinforcement of ceria or yttria-partially-stabilized zirconia (CE-TZP or Y-T-ZP) with platelets, whiskers or continuous filaments of alumina. Critical stresses for extension of filament-bridged matrix cracks were measured as a function of crack length in a model composite system, SiC (filament)-reinforced epoxy-alumina (matrix). The crack-length dependence of the crack extension stress at short crack lengths followed the prediction of a fracture-mechanics analysis that employed a new force-displacement law for the crack-bridging filaments developed in this study. At large crack lengths, the measured matrix-cracking stress was close to the prediction of the steady-state theory of Budiansky, Hutchinson and Evans. Optical fluorescence was employed to measure stresses in crack-bridging sapphire filaments and assess interfacial properties in a model sapphire-epoxy composite. Composites of yttria-partially-stabilized zirconia (Y-TZP) matrix dispersed with either single crystal A1{sub 2}0{sub 3} platelets or particulars were fabricated by a hybrid suspension/powder processing route to densities greater than 99.0% of theoretical. Both transformation toughening and platelet reinforcement contribute to the high fracture toughness of the A1{sub 2}0{sub 3} (platelet)-Y-TZP composites.

Shetty, D.K.

1995-04-01T23:59:59.000Z

433

Reaction of aromatic compounds and coal-derived liquids with steam over alumina supported nickel catalysts  

SciTech Connect

The objective of this research program has been to explore and define the potential of steam reforming to produce light gases from coal-derived liquids. This was achieved through a study of the reaction of a model aromatic compound and of a coal-derived liquid with steam over an alumina supported nickel catalyst. The reaction of steam with benzene and SRC-II liquids over an alumina supported nickel-catalyst has been investigated in a plug flow reactor. The primary process variables investigated were reactor pressure and temperature, contact time, and steam/carbon ratio. A proposed reaction network was also developed to explain the data obtained in this study. The empirical rate equation for the benzene steam reforming reaction at 973 K, 300 psig, and a steam/carbon ratio of approximately 3 was r/sub C6H6/ = 1.92 x 10 TP/sub C6H6/. The activation energy was 88 KJ/mol, or 21 kcal/mol in the temperature range 748-973 K. A correlation was developed to predict product yields and hydrocarbon conversion over the range of process variables investigated. A second correlation was developed to predict the yields and conversion beyond the range of variables investigated.

Chen, I.E.

1985-01-01T23:59:59.000Z

434

A High Temperature Electrochemical Energy Storage System Based on Sodium Beta-Alumina Solid Electrolyte (Base)  

SciTech Connect

This report summarizes the work done during the period September 1, 2005 and March 31, 2008. Work was conducted in the following areas: (1) Fabrication of sodium beta{double_prime} alumina solid electrolyte (BASE) using a vapor phase process. (2) Mechanistic studies on the conversion of {alpha}-alumina + zirconia into beta{double_prime}-alumina + zirconia by the vapor phase process. (3) Characterization of BASE by X-ray diffraction, SEM, and conductivity measurements. (4) Design, construction and electrochemical testing of a symmetric cell containing BASE as the electrolyte and NaCl + ZnCl{sub 2} as the electrodes. (5) Design, construction, and electrochemical evaluation of Na/BASE/ZnCl{sub 2} electrochemical cells. (6) Stability studies in ZnCl{sub 2}, SnCl{sub 2}, and SnI{sub 4} (7) Design, assembly and testing of planar stacks. (8) Investigation of the effect of porous surface layers on BASE on cell resistance. The conventional process for the fabrication of sodium ion conducting beta{double_prime}-alumina involves calcination of {alpha}-alumina + Na{sub 2}CO{sub 3} + LiNO{sub 3} at 1250 C, followed by sintering powder compacts in sealed containers (platinum or MgO) at {approx}1600 C. The novel vapor phase process involves first sintering a mixture of {alpha}-alumina + yttria-stabilized zirconia (YSZ) into a dense ceramic followed by exposure to soda vapor at {approx}1450 C to convert {alpha}-alumina into beta{double_prime}-alumina. The vapor phase process leads to a high strength BASE, which is also resistant to moisture attack, unlike BASE made by the conventional process. The PI is the lead inventor of the process. Discs and tubes of BASE were fabricated in the present work. In the conventional process, sintering of BASE is accomplished by a transient liquid phase mechanism wherein the liquid phase contains NaAlO{sub 2}. Some NaAlO{sub 2} continues to remain at grain boundaries; and is the root cause of its water sensitivity. In the vapor phase process, NaAlO{sub 2} is never formed. Conversion occurs by a coupled transport of Na{sup +} through BASE formed and of O{sup 2-} through YSZ to the reaction front. Transport to the reaction front is described in terms of a chemical diffusion coefficient of Na{sub 2}O. The conversion kinetics as a function of microstructure is under investigation. The mechanism of conversion is described in this report. A number of discs and tubes of BASE have been fabricated by the vapor phase process. The material was investigated by X-ray diffraction (XRD), optical microscopy and scanning electron microscopy (SEM), before and after conversion. Conductivity (which is almost exclusively due to sodium ion transport at the temperatures of interest) was measured. Conductivity was measured using sodium-sodium tests as well as by impedance spectroscopy. Various types of both planar and tubular electrochemical cells were assembled and tested. In some cases the objective was to determine if there was any interaction between the salt and BASE. The interaction of interest was mainly ion exchange (possible replacement of sodium ion by the salt cation). It was noted that Zn{sup 2+} did not replace Na+ over the conditions of interest. For this reason much of the work was conducted with ZnCl{sub 2} as the cathode salt. In the case of Sn-based, Sn{sup 2+} did ion exchange, but Sn{sup 4+} did not. This suggests that Sn{sup 4+} salts are viable candidates. These results and implications are discussed in the report. Cells made with Na as the anode and ZnCl{sub 2} as the cathode were successfully charged/discharged numerous times. The key advantages of the batteries under investigation here over the Na-S batteries are: (1) Steel wool can be used in the cathode compartment unlike Na-S batteries which require expensive graphite. (2) Planar cells can be constructed in addition to tubular, allowing for greater design flexibility and integration with other devices such as planar SOFC. (3) Comparable or higher open circuit voltage (OCV) than the Na-S battery. (4) Wider operating temperature range and higher temper

Anil Virkar

2008-03-31T23:59:59.000Z

435

Method for preparing configured silicon carbide whisker-reinforced alumina ceramic articles  

DOE Patents (OSTI)

A ceramic article of alumina reinforced with silicon carbide whiskers suitable for the fabrication into articles of complex geometry are provided by pressureless sintering and hot isostatic pressing steps. In accordance with the method of the invention a mixture of 5 to 10 vol. % silicon carbide whiskers 0.5 to 5 wt. % of a sintering aid such as yttria and the balance alumina powders is ball-milled and pressureless sintered in the desired configuration in the desired configuration an inert atmosphere at a temperature of about 1800.degree. C. to provide a self-supporting configured composite of a density of at least about 94% theoretical density. The composite is then hot isostatically pressed at a temperature and pressure adequate to provide configured articles of at least about 98% of theoretical density which is sufficient to provide the article with sufficient strength and fracture toughness for use in most structural applications such as gas turbine blades, cylinders, and other components of advanced heat engines.

Tiegs, Terry N. (Lenoir City, TN)

1987-01-01T23:59:59.000Z

436

Cogeneration handbook for the petroleum refining industry. [Contains glossary  

SciTech Connect

The decision of whether to cogenerate involves several considerations, including technical, economic, environmental, legal, and regulatory issues. Each of these issues is addressed separately in this handbook. In addition, a chapter is included on preparing a three-phase work statement, which is needed to guide the design of a cogeneration system. In addition, an annotated bibliography and a glossary of terminology are provided. Appendix A provides an energy-use profile of the petroleum refining industry. Appendices B through O provide specific information that will be called out in subsequent chapters.

Fassbender, L.L.; Garrett-Price, B.A.; Moore, N.L.; Fassbender, A.G.; Eakin, D.E.; Gorges, H.A.

1984-03-01T23:59:59.000Z

437

Nanosized molecular sieves as petroleum refining and petrochemical catalysts  

Science Journals Connector (OSTI)

Abstract Nanosized ZSM-5 was synthesized and used for straight run gasoline reforming. Nanosized ? was synthesized and used for the alkylation of benzene and ethylene in ethylbenzene production. Nanosized titanosilicate molecular sieve with a hollow structure (HTS) was synthesized and used for the oximation of cyclohexanone. Nanosized silicalite-1 was synthesized and used for the gas phase Beckmann rearrangement of cyclohexanone oxime in caprolactam production. Recent progress in the synthesis and application of nanosized ZSM-5, ?, TS-1, and silicalite-1 were reviewed. The catalyst lifetimes were prolonged when nanosized molecular sieves were used as petroleum refining and petrochemical catalysts.

Xuhong MU; Dianzhong WANG; Yongrui WANG; Min LIN; Shibiao CHENG; Xingtian SHU

2013-01-01T23:59:59.000Z

438

Growth strains and creep in thermally grown alumina : oxide growth mechanisms.  

SciTech Connect

In situ measurements of growth strains and creep relaxation in {alpha}-Al{sub 2}O{sub 3} films, isothermally grown on {beta}-NiAl alloys at 1100 C, are reported and analyzed. Samples containing the reactive element Zr, and Zr-free samples, are examined. For Zr-free samples, steady state growth strains are compressive, whereas the growth strains are tensile when the reactive element (RE) is added to the alloy. This behavior is attributed to the counterflow of oxygen and aluminum interstitials, and to simultaneous counterflow of oxygen and aluminum vacancies, all moving through the grain boundaries. Cross diffusing oxygen and aluminum interstitials may merge and combine within the film, forming new oxide along grain boundary walls, a mechanism that leads to an in-plane compressive stress. Cross diffusing oxygen and aluminum vacancies will also merge and combine within the film; in this case material is removed from grain boundary walls, a mechanism that leads to an in-plane tensile stress. When no RE is present, the interstitial mechanism dominates and the resultant stress is compressive. Consistent with the 'dynamic segregation model', the RE slows the outdiffusion of Al interstitials permitting the tensile mechanism to dominate. This interpretation invokes the unconventional view that oxygen and aluminum interstitials and vacancies, created in and driven by the strong chemical gradient, all participate meaningfully in the scale growth process. Grain boundary diffusion measurements were obtained from low stress creep data, interpreted using the Coble model of grain boundary diffusion. Reported diffusion measurements of oxygen through grain boundaries of {alpha}-Al{sub 2}O{sub 3}, which are known to be inconsistent with oxide scale growth, are critically examined. A simple picture, a 'balanced defect model', emerges that is consistent with the dynamic segregation model, observed growth stresses and their dependence on the presence of a reactive element, sequential oxidation experiments, and our best knowledge about grain boundary diffusion coefficients.

Veal, B. W.; Paulikas, A. P.; Materials Science Division

2008-01-01T23:59:59.000Z

439

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

Office of Scientific and Technical Information (OSTI)

Resources & Links Resources & Links Technical Information Publications Case Studies Publications Some of the following publications are available for download as Adobe PDF documents. Download Acrobat Reader Factors Affecting Emissions from Commercial Aluminum Reduction Cells (PDF 316 KB) The U.S. EPA and the Aluminum Association sponsored measurements of two perfluorocarbon (PFC) gases: tetrafluoromethane and hexafluoroethane. The measurements at six primary aluminum production facilities provided data on emissions of these compounds during normal aluminum smelting operations. Technology and Economics of Reducing PFC Emissions from Aluminium Production (PDF 139 KB) The paper, presented in 2002 at the Third International Symposium on Non-CO2 Greenhouse Gases (NCGG-3), provides an overview of global efforts

440

Ames Lab 101: BAM (Boron-Aluminum-Magnesium)  

ScienceCinema (OSTI)

Materials scientist, Bruce Cook, discusses the super hard, low friction, and lubricious alloy know as BAM (Boron-Aluminum-Magnesium). BAM was discovered by Bruce Cook and his team a

Bruce Cook

2013-06-05T23:59:59.000Z

Note: This page contains sample records for the topic "aluminum alumina refining" 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

ITP Aluminum: Technical Working Group on Inert Anode Technologies  

Office of Environmental Management (EM)

of aluminum and its use. De Vries. Hans. (Aluminal Obeflaechentechnik G.m.b.H., Germany), Ger.. 4 pp. CODEN: GW. DE 19716495" C 1 980520. Patent written in German....

442

A technology roadmap for the U.S. aluminum industry  

Science Journals Connector (OSTI)

By partnering with the OIT, the aluminum industry has taken an important step in planning the technology needs of their industry for the next ... in defining its long-term goals and the technology requirements to...

H. S. Kenchington; J. L. Eisenhauer; J. A. S. Green

1997-08-01T23:59:59.000Z

443

Laser ablation analysis of novel perfluoroalkyl-coated aluminum nanocomposites  

SciTech Connect

The evolution and decay of aluminum and aluminum monoxide emission signatures following a laser ablation event were used to compare the relative reaction rates of three aluminum based materials. Time-resolved emission results of oxide-free, C{sub 13}F{sub 27}CO{sub 2}H-passivated materials were compared with uncoated, oxide passivated aluminum nanoparticles and those coated with the same acid used in for passivation C{sub 13}F{sub 27}CO{sub 2}H. Excited state Al and AlO emission is reduced in time for the oxide free material when compared to coated, 50 nm, oxide passivated particles mixed on an equal active Al: C{sub 13}F{sub 27}CO{sub 2}H ratio. This is interpreted as an increase in the reaction rate afforded by the elimination of the oxide coating and proximity of oxidizing species in the SAM-based nanocomposite.

Jouet, R. Jason; Carney, Joel R.; Lightstone, James M.; Warren, Andrea D. [Research, Development, Test, and Evaluation, IHDIV, Naval Surface Warfare Center 4104 Evans Way, Suite 102 Indian Head MD 20640-5102 (United States)

2007-12-12T23:59:59.000Z

444

Primary aluminum production : climate policy, emissions and costs  

E-Print Network (OSTI)

Climate policy regarding perfluorocarbons (PFCs) may have a significant influence on investment decisions in the production of primary aluminum. This work demonstrates an integrated analysis of the effectiveness and likely ...

Harnisch, Jochen.; Sue Wing, Ian.; Jacoby, Henry D.; Prinn, Ronald G.

445

Energy implications of the changing world of aluminum metal supply  

Science Journals Connector (OSTI)

Driven primarily by energy considerations, there has been a major change in the geographical distribution of primary aluminum production over the past few decades, even as the energy efficiency of the process ...

Subodh K. Das; W. Jerry Long III; H. Wayne Hayden; John A. S. Green…

2004-08-01T23:59:59.000Z

446

CLASSIFICATION AND REACTIVITY OF SECONDARY ALUMINUM PRODUCTION WASTE  

E-Print Network (OSTI)

aluminum30 production process emits seventeen (17) times less pollution to the atmosphere (see Table 1 in the ASCE Journal of Hazardous, Toxic, and Radioactive Waste November 8, 2012 #12;2 Classification

447

Indirect-Fired Kiln Conserves Scrap Aluminum and Cuts Costs ...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

project conducted at this plant by Energy Research Company (ERCo), of Staten Island, New York, involves a new energy-efficient kiln that heats scrap aluminum for reuse. This...

448

New, More Efficient Technology for Remelting Aluminum Chips  

E-Print Network (OSTI)

This project will introduce a new, more efficient technology for remelting the considerable volume of aluminum by 6.5% . Automated conveyors will transport chips from the machining operation to the new remelting operation for recycling. A reduction...

Hosek, D.

449

Acoustical effect of progressive undercutting of percussive aluminum bars  

Science Journals Connector (OSTI)

Standard vibraphone bars consist of aluminum beams which are traditionally tuned with an arched undercut for the purpose of aligning the musical overtones harmonically. The acoustical effect of various progressions of undercuts on aluminum bars was studied using both an aluminum bar and a finite element computer model. The spectral signature of the aluminum bar was examined with a spectrum analyzer and the corresponding eigenmodes were imaged with an electronic speckle pattern interferometer. These methods were used to analyze the changes in natural frequencies of the bar as matter was removed from various locations. Additionally the aural character of each cut was captured with an audio recording and the fundamental tone was normalized over all recordings to make possible a subjective comparison of the timbral differences of differently cut bars.

Eric M. Laukkanen; Randy Worland

2011-01-01T23:59:59.000Z

450

Ames Lab 101: BAM (Boron-Aluminum-Magnesium)  

SciTech Connect

Materials scientist, Bruce Cook, discusses the super hard, low friction, and lubricious alloy know as BAM (Boron-Aluminum-Magnesium). BAM was discovered by Bruce Cook and his team a

Bruce Cook

2012-08-18T23:59:59.000Z

451

ALUMINUM--1997 5.1 By Patricia A. Plunkert  

E-Print Network (OSTI)

. Reynolds Metals Co. announced the planned restart of limited production at its Troutdale, OR, primary aluminum smelter by February 1998 at an annual rate of 27,000 tons. The Troutdale smelter, which has

452

Climate VISION: Private Sector Initiatives: Aluminum: Work Plans  

Office of Scientific and Technical Information (OSTI)

Work Plans The Aluminum Association has finalized its work plan with the collaboration of EPA. The plan describes actions the industry intends to take to achieve its Climate VISION...

453

Laser ignition of a heterogeneous nickel-aluminum system  

Science Journals Connector (OSTI)

The ignition of a heterogeneous nickel—aluminum system by laser radiation is investigated experimentally. The ignition characteristics are investigated as a function of ... the samples. It is established that the...

Yu. S. Naiborodenko; V. M. Filatov

454

Low-Cost Direct Bonded Aluminum (DBA) Substrates  

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

Managed by UT-Battelle for the Department of Energy Low-Cost Direct Bonded Aluminum (DBA) Substrates H. -T. Lin, A. A. Wereszczak, and S. Waters Oak Ridge National Laboratory This...

455

Low-Cost Direct Bonded Aluminum (DBA) Substrates  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Low-Cost Direct Bonded Aluminum (DBA) Substrates H. -T. Lin, A. A. Wereszczak, M. L. Santella, and G. Muralidharan Oak Ridge National Laboratory (ORNL) This presentation does not...

456

Process Refinements - Reporting of Public Use of Diesel Fuel  

NLE Websites -- All DOE Office Websites (Extended Search)

Based on FHWA's reassessment of the reporting and attribution process and on the GAO study, several specific issues were identified. These issues were published in a Federal Register notice for public response.3 Sixteen States provided comments on the issues provided in the Federal Register. Two additional issues were also raised by commenters. The comments may be found at http://dmses.dot.gov; search for docket number FHWA-2000-7635. All of the issues are discussed below. Certain process refinements are required to address these issues; these changes are explained in the following sections. Based on FHWA's reassessment of the reporting and attribution process and on the GAO study, several specific issues were identified. These issues were published in a Federal Register notice for public response.3 Sixteen States provided comments on the issues provided in the Federal Register. Two additional issues were also raised by commenters. The comments may be found at http://dmses.dot.gov; search for docket number FHWA-2000-7635. All of the issues are discussed below. Certain process refinements are required to address these issues; these changes are explained in the following sections. Some of the issues concern the data reported by the States. Because of differences in State laws, States collect different types of data. Chapter 2 of A Guide to Reporting Highway Statistics4 provides instructions for completing Forms FHWA-551M and FHWA-556.

457

Structure, Thermodynamics, and Energy Content of Aluminum–Cyclopentadienyl Clusters  

Science Journals Connector (OSTI)

(11, 14) Currently very little is known about the stability or decomposition of the larger aluminum–cyclopentadienyl compounds that contain a significant mass fraction of aluminum. ... To analyze the relative bonding strength and possible unimolecular decomposition pathways in the systems, we next consider the bond dissociation energies (BDEs), defined as the reaction energy De for homolytic cleavage of the listed bond. ... We next consider the thermochemistry of these compounds, with particular focus on their energy content for propellant and energetic material applications. ...

Kristen S. Williams; Joseph P. Hooper

2011-10-18T23:59:59.000Z

458

Materials Science and Engineering A252 (1998) 117132 Optimization of 316 stainless steel/alumina functionally graded  

E-Print Network (OSTI)

. Introduction Due to differences of thermal and mechanical prop- erties in ceramics and metals, residual stresses develop in regions near the ceramic/metal interfaces during fabrication and under thermal/alumina functionally graded material for reduction of damage induced by thermal residual stresses M. Grujicic *, H

Grujicic, Mica

459

Thermal cycling effect on the nanoparticle distribution and specific heat of a carbonate eutectic with alumina nanoparticles  

E-Print Network (OSTI)

. The concentration of alumina nanoparticles in this material was measured using neutron activation analysis. The average specific heat of the uncycled material was found to be 1.37 J/g°C.The average specific heat of the thermally cycled material was between 1.7-2.1 J...

Shankar, Sandhya

2011-08-08T23:59:59.000Z

460

Shape selective cracking ofn-octane and 2,2,4-trimethylpentane over an alumina-pillared clay  

Science Journals Connector (OSTI)

A mixture ofn-octane (nC8...) and 2, 2, 4-trimethylpentane (224-TMP) was cracked over an alumina-pillared montmorillonite (Al-PILC) acid catalyst as a means of characterising...8...remaining)/log (fraction of 224...

Christian Doblin; Joseph F. Mathews; Terence W. Turney

1994-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "aluminum alumina refining" 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

Effects of preformed alumina scales on the behavior of FeCrAl alloys in simulated coal-gasifier atmospheres  

Science Journals Connector (OSTI)

Iron-based mechanical alloys containing 3.2–6.6 Al, 16.0–24.7 Cr, 0.5 Ti, and 0.5 Y2O3 (mass%) were preoxidized in air at 1373 K for 10–180 min. Alumina scales were formed. Scales were isolated and examined in a ...

J. K. Richard Weber; M. G. Hocking

1989-08-01T23:59:59.000Z

462

Fracture and Fatigue Behavior at Ambient and Elevated Temperatures of Alumina Bonded with Copper/Niobium/Copper Interlayers  

E-Print Network (OSTI)

Fracture and Fatigue Behavior at Ambient and Elevated Temperatures of Alumina Bonded with Copper and Engineering, University of California, Berkeley, California 94720 Interfacial fracture toughness and cyclic temperatures, and assessed in terms of interfacial chemistry and microstructure. The mean interfacial fracture

Ritchie, Robert

463

Microstructure characterization of the stir zone of submerged friction stir processed aluminum alloy 2219  

SciTech Connect

Aluminum alloy 2219-T6 was friction stir processed using a novel submerged processing technique to facilitate cooling. Processing was conducted at a constant tool traverse speed of 200 mm/min and spindle rotation speeds in the range from 600 to 800 rpm. The microstructural characteristics of the base metal and processed zone, including grain structure and precipitation behavior, were studied using optical microscopy (OM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Microhardness maps were constructed on polished cross sections of as-processed samples. The effect of tool rotation speed on the microstructure and hardness of the stir zone was investigated. The average grain size of the stir zone was much smaller than that of the base metal, but the hardness was also lower due to the formation of equilibrium ? precipitates from the base metal ?? precipitates. Stir zone hardness was found to decrease with increasing rotation speed (heat input). The effect of processing conditions on strength (hardness) was rationalized based on the competition between grain refinement strengthening and softening due to precipitate overaging. - Highlights: • SZ grain size (? 1 ?m) is reduced by over one order of magnitude relative to the BM. • Hardness in the SZ is lower than that of the precipitation strengthened BM. • Metastable ?? in the base metal transforms to equilibrium ? in the stir zone. • Softening in the SZ results from a decrease of precipitation strengthening.

Feng, Xiuli, E-mail: feng.97@osu.edu [Welding Engineering Program, Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43221 (United States); State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001 (China); Liu, Huijie, E-mail: liuhj@hit.edu.cn [State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001 (China); Lippold, John C., E-mail: lippold.1@osu.edu [Welding Engineering Program, Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43221 (United States)

2013-08-15T23:59:59.000Z

464

Effects of dispersion and support on adsorption, catalytic and electronic properties of cobalt/alumina CO hydrogenation catalysts: (Technical progress report)  

SciTech Connect

The continued investigation of dispersion and metal-support interactions and their effects upon the adsorption, activity/selectivity, and electronic properties of the metal in cobalt/alumina (and to a lesser extent on iron/alumina) catalysts is proposed. The objectives of this research are to determine the effects of surface structure and metal dispersion on the adsorption and catalytic properties of cobalt, and determine the effects of metal-support interactions, i.e., effects of decorating support species on metal crystallites and of direct electronic interactions between metal clusters and the support, on the adsoprtion, catalytic and electronic properties of cobalt supported on alumina.

Bartholomew, C.H. Jr.

1986-12-22T23:59:59.000Z

465

Impact of Environmental Compliance Costs on U.S. Refining Profitability 1995-2001  

Reports and Publications (EIA)

This report assesses the effects of pollution abatement requirements on the financial performance of U.S. petroleum refining and marketing operations during the 1995 to 2001 period. This study is a follow-up to the October 1997 publication entitled The Impact of Environmental Compliance Costs on U.S. Refining Profitability, that focused on the financial impacts of U.S. refining pollution abatement investment requirements in the 1988 to1995 period.

2003-01-01T23:59:59.000Z

466

Linkages between the markets for crude oil and the markets for refined products  

SciTech Connect

To understand the crude oil price determination process it is necessary to extend the analysis beyond the markets for petroleum. Crude oil prices are determined in two closely related markets: the markets for crude oil and the markets for refined products. An econometric-linear programming model was developed to capture the linkages between the markets for crude oil and refined products. In the LP refiners maximize profits given crude oil supplies, refining capacities, and prices of refined products. The objective function is profit maximization net of crude oil prices. The shadow price on crude oil gives the netback price. Refined product prices are obtained from the econometric models. The model covers the free world divided in five regions. The model is used to analyze the impacts on the markets of policies that affect crude oil supplies, the demands for refined products, and the refining industry. For each scenario analyzed the demand for crude oil is derived from the equilibrium conditions in the markets for products. The demand curve is confronted with a supply curve which maximizes revenues providing an equilibrium solution for both crude oil and product markets. The model also captures crude oil price differentials by quality. The results show that the demands for crude oil are different across regions due to the structure of the refining industries and the characteristics of the demands for refined products. Changes in the demands for products have a larger impact on the markets than changes in the refining industry. Since markets for refined products and crude oil are interrelated they can't be analyzed individually if an accurate and complete assessment of a policy is to be made. Changes in only one product market in one region affect the other product markets and the prices of crude oil.

Didziulis, V.S.

1990-01-01T23:59:59.000Z

467

Electrophoretic Mobility of Poly(acrylic acid)-Coated Alumina Particles  

SciTech Connect

The effect of poly (acrylic acid) (PAA) adsorption on the electrokinetic behavior of alumina dispersions under high pH conditions was investigated as a function of polymer concentration and molecular weight as well as the presence, concentration and ion type of background electrolyte. Systems of this type are relevant to nuclear waste treatment, in which PAA is known to be an effective rheology modifier. The presence of all but the lowest molecular weight PAA studied (1800) led to decreases in dynamic electrophoretic mobility at low polymer concentrations, attributable to bridging flocculation, as verified by measurements of particle size distribution. Bridging effects increased with polymer molecular weight, and decreased with polymer concentration. Increases in background electrolyte concentration enhanced dynamic electrophoretic mobility as the polymer layers were compressed and bridging was reduced. Such enhancements were reduced as the cation was changed from Na+ to K+ to Cs+.

Bhosale, Prasad S.; Chun, Jaehun; Berg, John C.

2011-06-01T23:59:59.000Z

468

Environmental Regulations and Changes in Petroleum Refining Operations  

Gasoline and Diesel Fuel Update (EIA)

Environmental Regulations and Environmental Regulations and Changes in Petroleum Refining Operations By Tancred C.M. Lidderdale Contents * Introduction * Motor Gasoline Summer Volatility (RVP) Regulations o Table 1. Summer Volatility Regulations for Motor Gasoline o Table 2. Refinery Inputs and Production of Normal Butane o Figure 1. Refinery Inputs and Production of Normal Butane o Table 3. Price Relationship Between Normal Butane and Motor Gasoline o Table 4. Market Price Premium for Low Vapor Pressure (RVP) Gasoline * Oxygenate Content of Motor Gasoline o Figure 2. Oxygenate Content of Motor Gasoline o Table 5. Oxygenated and Conventional Motor Gasoline Price Relationship o Table 6. Reformulated and Conventional Motor Gasoline Price Relationship o Figure 3. Price Differences Between RFG or MTBE and Conventional Gasoline

469

Curved mesh generation and mesh refinement using Lagrangian solid mechanics  

SciTech Connect

We propose a method for generating well-shaped curved unstructured meshes using a nonlinear elasticity analogy. The geometry of the domain to be meshed is represented as an elastic solid. The undeformed geometry is the initial mesh of linear triangular or tetrahedral elements. The external loading results from prescribing a boundary displacement to be that of the curved geometry, and the final configuration is determined by solving for the equilibrium configuration. The deformations are represented using piecewise polynomials within each element of the original mesh. When the mesh is sufficiently fine to resolve the solid deformation, this method guarantees non-intersecting elements even for highly distorted or anisotropic initial meshes. We describe the method and the solution procedures, and we show a number of examples of two and three dimensional simplex meshes with curved boundaries. We also demonstrate how to use the technique for local refinement of non-curved meshes in the presence of curved boundaries.

Persson, P.-O.; Peraire, J.

2008-12-31T23:59:59.000Z

470

New extraction-based re-refining process saves money  

SciTech Connect

A novel re-refining process uses solvent extraction and distillation to process used oil at lower cost and much smaller volumes than existing technology will allow. Current technology typically requires minimum processing volumes of 40,000 gpd for economically viable operation. The new process, developed by Interline Resources Corp., Alpine, Utah, can operate economically on volumes as small as 5,000 gpd. The new process has eliminated the need for thin-film evaporators, as well as the very expensive hydrofinishing step. The elimination of this capital-intensive equipment is made possible by the patented Mellon Process. In this process, the water, additives, and solids are removed at ambient conditions, thus allowing the resulting oil to be handled in traditional distillation equipment. The paper describes the process, yields, costs, and operating experience of the commercial-scale re-refinery at Draper, Utah.

Not Available

1994-05-30T23:59:59.000Z

471

Global refining beyond the year 2000 - A European perspective  

SciTech Connect

A new French publication from Editions Technip contains a broad-based discussion on the economic and processing parameters that will shape the refinery of the future. Process experts from Institut Francais Du Petrole (IFP) have constructed a {open_quotes}road map{close_quotes} for refining and petrochemical flow schemes that should interest industry planners and decision makers throughout the world. The importance attributed to the characterization of crude oils and petroleum products is stressed. On a directional basis, the industry will see more emphasis on methodologies to improve existing conversion and separation processes. Buzzwords such as biorefining, refinery integrated information systems, petrochemical/refinery integration and many others will find a forum in future publications.

Gonzalez, R.G. [ed.

1996-01-01T23:59:59.000Z

472

Determination of boron in aluminum and aluminum-magnesium alloy by charged particle activation analysis  

SciTech Connect

Charge particle activation analysis is applied to the determination of boron in aluminum and aluminum-magnesium alloy. The /sup 10/B(p,..cap alpha..)/sup 7/Be, the /sup 10/B(d,..cap alpha..n)/sup 7/Be, and the /sup 10/B(d,n)/sup 11/C reactions are used. Proton activation allows an instrumental determination. When the /sup 10/B(d,..cap alpha..n)/sup 7/Be reaction is used, beryllium-7 is separated from the matrix by liquid-liquid extraction; beryllium acetylacetonate is extracted with carbon tetrachloride after complexation of other metal ions with ethylenediaminetetraacetic acid. After back extraction beryllium is precipitated as beryllium hydroxide and heated to beryllium oxide. When the /sup 10/B(d,n)/sup 11/C reaction is used, carbon-11 is separated as carbon dioxide by dissolution of the sample in a mixture of sulfuric acid, phosphoric acid, water, and potassium dichromate. The chemical yield of both separation methods was determined. The results obtained have a relative standard deviation of 5-9% at the 1-33 ..mu..g/g concentration. The different nuclear reactions yield results that are in good mutual agreement and also agree satisfactorily with those of nonnuclear analytical methods.

Mortier, R.; Vandecasteele, C.; Strijckmans, K.; Hoste, J.

1984-10-01T23:59:59.000Z

473

Table 3a. Imported Refiner Acquisition Cost of Crude Oil, Projected...  

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

a. Imported Refiner Acquisition Cost of Crude Oil, Projected vs. Actual" "Projected Price in Constant Dollars" " constant dollars per barrel in ""dollar year"" specific to each...

474

Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil...  

Gasoline and Diesel Fuel Update (EIA)

AdministrationPetroleum Marketing Annual 1998 295 Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil Volumes by PAD District and State (Thousand Gallons per Day) -...

475

Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil...  

Gasoline and Diesel Fuel Update (EIA)

AdministrationPetroleum Marketing Annual 1999 295 Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil Volumes by PAD District and State (Thousand Gallons per Day) -...

476

Quantitative Methods for Strategic and Investment Planning in the Oil-Refining  

E-Print Network (OSTI)

by one refinery Refinery Opera*onal Planning - Simulate the Refining Scenarios Supply Chain Investments Planning - Test the refinery best scenarios

Grossmann, Ignacio E.

477

Table A2. Refiner/Reseller Prices of Aviation Fuels, Propane...  

Gasoline and Diesel Fuel Update (EIA)

Marketing Annual 1995 467 Table A2. RefinerReseller Prices of Aviation Fuels, Propane, and Kerosene, by PAD District, 1983-Present (Cents per Gallon Excluding Taxes) -...

478

Table A2. Refiner/Reseller Prices of Aviation Fuels, Propane...  

Gasoline and Diesel Fuel Update (EIA)

Marketing Annual 1999 421 Table A2. RefinerReseller Prices of Aviation Fuels, Propane, and Kerosene, by PAD District, 1983-Present (Cents per Gallon Excluding Taxes) -...

479

E-Print Network 3.0 - adaptive grid refinement Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

of .004, the adaptive algorithm automatically generates 5 refined grids. One grid patch... and more elsewhere, would clearly be optimal. In this talk, we describe a method of...

480

Table A1. Refiner/Reseller Motor Gasoline Prices by Grade, PAD...  

Annual Energy Outlook 2012 (EIA)

AdministrationPetroleum Marketing Annual 1999 401 Table A1. RefinerReseller Motor Gasoline Prices by Grade, PAD District and State, 1984-Present (Cents per Gallon Excluding...

Note: This page contains sample records for the topic "aluminum alumina refining" 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.


481

Corrosion of aluminum alloys in a reactor disassembly basin  

SciTech Connect

This document discusses storage of aluminum clad fuel and target tubes of the Mark 22 assembly takes place in the concrete-lined, light-water-filled, disassembly basins located within each reactor area at the Savannah River Site (SRS). A corrosion test program has been conducted in the K-Reactor disassembly basin to assess the storage performance of the assemblies and other aluminum clad components in the current basin environment. Aluminum clad alloys cut from the ends of actual fuel and target tubes were originally placed in the disassembly water basin in December 1991. After time intervals varying from 45--182 days, the components were removed from the basin, photographed, and evaluated metallographically for corrosion performance. Results indicated that pitting of the 8001 aluminum fuel clad alloy exceeded the 30-mil (0.076 cm) cladding thickness within the 45-day exposure period. Pitting of the 1100 aluminum target clad alloy exceeded the 30-mil (0.076 cm) clad thickness in 107--182 days exposure. The existing basin water chemistry is within limits established during early site operations. Impurities such as Cl{sup {minus}}, NO{sub 3}{sup {minus}} and SO{sub 4}{sup {minus}} are controlled to the parts per million level and basin water conductivity is currently 170--190 {mu}mho/cm. The test program has demonstrated that the basin water is aggressive to the aluminum components at these levels. Other storage basins at SRS and around the US have successfully stored aluminum components for greater than ten years without pitting corrosion. These basins have impurity levels controlled to the parts per billion level (1000X lower) and conductivity less than 1.0 {mu}mho/cm.

Howell, J.P.; Zapp, P.E.; Nelson, D.Z.

1992-12-01T23:59:59.000Z

482

Production of anhydrous aluminum chloride composition and process for electrolysis thereof  

DOE Patents (OSTI)

A process for producing an anhydrous aluminum chloride composition from a water-based aluminous material such as a slurry of aluminum hydroxide in a multistage extraction process in which the aluminum ion is first extracted into an organic liquid containing an acidic extractant and then extracted from the organic phase into an alkali metal chloride or chlorides to form a melt containing a mixture of chlorides of alkali metal and aluminum. In the process, the organic liquid may be recycled. In addition, the process advantageously includes an electrolysis cell for producing metallic aluminum and the alkali metal chloride or chlorides may be recycled for extraction of the aluminum from the organic phase.

Vandegrift, George F. (Bolingbrook, Naperville, IL); Krumpelt, Michael (Naperville, IL); Horwitz, E. Philip (Hinsdale, IL)

1983-01-01T23:59:59.000Z

483

Hermetic aluminum radio frequency interconnection and method for making  

DOE Patents (OSTI)

The present invention provides a light-weight, hermetic coaxial radio-frequency (RF) interconnection having an electrically conductive outer housing made of aluminum or an aluminum alloy, a central electrical conductor made of ferrous or non-ferrous material, and a cylinder of dielectric material comprising a low-melting-temperature, high-thermal-expansion aluminophosphate glass composition for hermetically sealing between the aluminum-alloy outer housing and the ferrous or non-ferrous center conductor. The entire RF interconnection assembly is made permanently hermetic by thermally fusing the center conductor, glass, and housing concurrently by bringing the glass to the melt point by way of exposure to an atmospheric temperature sufficient to melt the glass, less than 540.degree. C., but that does not melt the center conductor or the outer aluminum or aluminum alloy housing. The composition of the glass used is controlled to provide a suitable low dielectric constant so that an appropriate electrical characteristic impedance, for example 50 ohms, can be achieved for an electrical interconnection that performs well at high radio frequencies and also provides an interconnection maintaining a relatively small physical size.

Kilgo, Riley D. (Albuquerque, NM); Kovacic, Larry (Albuquerque, NM); Brow, Richard K. (Rolla, MO)

2000-01-01T23:59:59.000Z

484

Effects of Nanoscale Structure on the Magnetism and Transport Properties of Chromium and Chromium-Aluminum Alloys  

E-Print Network (OSTI)

J. L. Murray. The Al-Cr (aluminum-chromium) system. Joural3d transition elements and aluminum. Journal of Physics andof Chromium and Chromium-Aluminum Alloys by Zoe Austin

Boekelheide, Zoe Austin

2011-01-01T23:59:59.000Z

485

DOE - Office of Legacy Management -- Kaiser Aluminum Corp - IL 19  

NLE Websites -- All DOE Office Websites (Extended Search)

Kaiser Aluminum Corp - IL 19 Kaiser Aluminum Corp - IL 19 FUSRAP Considered Sites Site: KAISER ALUMINUM CORP. (IL.19 ) Eliminated from further consideration under FUSRAP Designated Name: Not Designated Alternate Name: None Location: Dolton , Illinois IL.19-2 Evaluation Year: 1987 IL.19-2 Site Operations: Performed limited duration work extruding uranium billets into three CP-5 fuel elements, circa 1959. IL.19-2 Site Disposition: Eliminated - Potential for contamination considered remote due to limited scope of activities IL.19-3 Radioactive Materials Handled: Yes Primary Radioactive Materials Handled: Uranium IL.19-2 Radiological Survey(s): Yes - health and safety monitoring during operations IL.19-4 Site Status: Eliminated from further consideration under FUSRAP

486

Exergy transfer analysis of an aluminum holding furnace  

Science Journals Connector (OSTI)

Abstract This study presents the unsteady exergy transfer analysis of an aluminum holding furnace with new heating resistance scheme. This holding system consists of four multilayer refractory walls and one resistance heating system which is responsible of maintaining the appropriate aluminum temperature and composition for further casting. The purpose of this analysis is to understand and identify heat losses and irreversibilities of the holding process of an aluminum furnace by means of the First and Second Law of Thermodynamics. In this study, bi-dimensional temperature and exergy fields during heat and exergy transfer processes are presented. The exergy balance is completely computed for this system, obtaining: exergy transfer, exergy variation rate, and destroyed exergy rate.

Luis Acevedo; Sergio Usón; Javier Uche

2015-01-01T23:59:59.000Z

487

COMPILATION OF LABORATORY SCALE ALUMINUM WASH AND LEACH REPORT RESULTS  

SciTech Connect

This report compiles and analyzes all known wash and caustic leach laboratory studies. As further data is produced, this report will be updated. Included are aluminum mineralogical analysis results as well as a summation of the wash and leach procedures and results. Of the 177 underground storage tanks at Hanford, information was only available for five individual double-shell tanks, forty-one individual single-shell tanks (e.g. thirty-nine 100 series and two 200 series tanks), and twelve grouped tank wastes. Seven of the individual single-shell tank studies provided data for the percent of aluminum removal as a function of time for various caustic concentrations and leaching temperatures. It was determined that in most cases increased leaching temperature, caustic concentration, and leaching time leads to increased dissolution of leachable aluminum solids.

HARRINGTON SJ

2011-01-06T23:59:59.000Z

488

Reactive self-heating model of aluminum spherical nanoparticles  

E-Print Network (OSTI)

Aluminum-oxygen reaction is important in many highly energetic, high pressure generating systems. Recent experiments with nanostructured thermites suggest that oxidation of aluminum nanoparticles occurs in a few microseconds. Such rapid reaction cannot be explained by a conventional diffusion-based mechanism. We present a rapid oxidation model of a spherical aluminum nanoparticle, using Cabrera-Mott moving boundary mechanism, and taking self-heating into account. In our model, electric potential solves the nonlinear Poisson equation. In contrast with the Coulomb potential, a "double-layer" type solution for the potential and self-heating leads to enhanced oxidation rates. At maximal reaction temperature of 2000 C, our model predicts overall oxidation time scale in microseconds range, in agreement with experimental evidence.

Karen S. Martirosyan; Maxim Zyskin

2012-12-17T23:59:59.000Z

489

MICROSTRUCTURE EVOLUTION MODELING FOR SOLUTION TREATMENT OF ALUMINUM ALLOYS  

SciTech Connect

The microstructure evolution during solution treatment plays an important role in mechanical properties of heat-treated aluminum alloys. In this paper, models were reviewed that can predict the microstructure evolution during the solutionizing process of the aging heat treatment of aluminum alloys. The dissolution of Mg2Si particles has been modeled as a diffusion process of Mg in the -Al matrix. The evolution of volumetric fraction of fragmented silicon as a function of time and temperature was also considered. The growth and coarsening of silicon particles during the heat treatment was considered. It was found that constitutive equations and required property data for most of the phenomena that need to be considered are available. Several model parameters that need to be obtained from material characterization were identified. Pending the availability of these model parameters, this comprehensive model can be used to describe the microstructure evolution of aluminum alloys in order to optimize the solutionizing heat treatment for energy savings.

Yin, Hebi [ORNL; Sabau, Adrian S [ORNL; Skszek, Timothy [Vehma International of American, Inc.; Niu, X [Magna Cosma International, Promatek Research Centre

2013-01-01T23:59:59.000Z

490

To appear in EPTCS. A CSP account of Event-B refinement  

E-Print Network (OSTI)

To appear in EPTCS. A CSP account of Event-B refinement Steve Schneider Department of Computing a CSP account of Event-B refinement, with a treatment for the first time of splitting events and of anticipated events. To this end, we define a CSP seman- tics for Event-B and show how the different forms

Doran, Simon J.

491

FDR3 --A Modern Refinement Checker for CSP Thomas Gibson-Robinson, Philip Armstrong,  

E-Print Network (OSTI)

FDR3 -- A Modern Refinement Checker for CSP Thomas Gibson-Robinson, Philip Armstrong, Alexandre.roscoe}@cs.ox.ac.uk Abstract. FDR3 is a complete rewrite of the CSP refinement checker FDR2, incorporating a significant number describe the new algorithm that FDR3 uses to construct its in- ternal representation of CSP processes

Oxford, University of

492

FDR3 --A Modern Refinement Checker for CSP Thomas Gibson-Robinson, Philip Armstrong,  

E-Print Network (OSTI)

FDR3 -- A Modern Refinement Checker for CSP Thomas Gibson-Robinson, Philip Armstrong, Alexandre.roscoe}@cs.ox.ac.uk Abstract. FDR3 is a complete rewrite of the CSP refinement checker FDR2, incorporating a significant number describe the new algorithm that FDR3 uses to construct its internal representation of CSP processes

Oxford, University of

493

Ego-Motion Estimation and 3D Model Refinement in Scenes with Varying Illumination  

E-Print Network (OSTI)

-motion and refining and updating a coarse depth map using surface parallax and a generalized dynamic im- age (GDI (DEM), we first estimate the ego-motion by combining a global ego-motion constraint and a local GDI field and the GDI model parameters locally and use them to refine the depth map estimates. We use

Agrawal, Amit

494

Effects of wastewater from an oil-sand-refining operation on survival, hematology, gill histology,  

E-Print Network (OSTI)

Effects of wastewater from an oil-sand-refining operation on survival, hematology, gill histology the effects of various types of wastewater produced in oil-sand-refining on the survival, hematology, gill. In con- trast, all fish did not survive a 28-day period in any of the wastewaters tested and, in some

Farrell, Anthony P.

495

Aspects of Western Refining, Inc.'s Proposed Acquisition of Giant Industries, Inc.  

Reports and Publications (EIA)

Presentation of company-level, non-proprietary data and relevant aggregate data for U.S. refinery capacity and gasoline marketing of Western Refining and Giant Industries to inform discussions of Western Refining Inc.'s proposed acquisition of Giant Industries Inc. for a total of $1.5 billion, which was announced August 28, 2006.

2006-01-01T23:59:59.000Z

496

Evaluation of Corrosion of Aluminum Based Reactor Fuel Cladding Materials During Dry Storage  

SciTech Connect

This report provides an evaluation of the corrosion behavior of aluminum cladding alloys and aluminum-uranium alloys at conditions relevant to dry storage. The details of the corrosion program are described and the results to date are discussed.

Peacock, H.B. Jr.

1999-10-21T23:59:59.000Z

497

E-Print Network 3.0 - aluminum phosphide pc Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

HCP CCP PO phosphorus monoxide molecular oxygen Aluminum oxide H2 H2 O H2 S CSi carbon... isocyanide HCl NaCl NaCN N2 O KCl AlCl aluminum monochloride NH2 amidyl radical*...

498

E-Print Network 3.0 - aluminum-lithium alloys processed Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

aluminum-lithium alloys, there is a precipitation of metastable, coherent, L1... and fracture toughness of aluminum-lithium alloys can be improved by the addition of zirconium...

499

E-Print Network 3.0 - aluminum oxide selectively Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

between GaN and AlGaN has been observed up to an aluminum mole fraction... oxides.1-3 For gallium nitride and aluminum gallium nitride this effect has been seldom reported.4... ,...

500

Structure of aluminum hydroxide powders obtained as a byproduct of hydrogen fuel production  

Science Journals Connector (OSTI)

The structure of aluminum hydroxide powders obtained as byproducts of hydrogen fuel production was investigated. One of the main initial components comprised aluminum-magnesium chips with 0.6, 6 and 12 wt.% ma...

A. D. Shlyapin; A. Yu. Omarov; V. P. Tarasovskii; Yu. G. Trifonov

2013-09-01T23:59:59.000Z