U.S. Department of EnergyOffice of Scientific and Technical Information
Direct utilization - recovery of minerals from coal fly ash. Technical progress report, October 1, 1982-December 31, 1982
Abstract
Research included an examination of the adsorbed water on coal fly ash, the utilization of phosgene as a chlorination agent, the physical adsorption and chemisorption of phosgene on fly ash particles, and the aqueous separation of chlorination products. Results of an investigation of coal fly ash powder samples using photoacoustic infrared spectroscopy showed almost complete removal of adsorbed water after drying for 30 hours at 700/sup 0/C. A thermodynamic computer simulation of the chlorination of an SiO/sub 2/ and Al/sub 2/O/sub 3/ mixture of 2:1 molar ratio with a stoichiometric amount of carbon present revealed that silica is the preferred reactant at lower temperature, but that alumina chlorination is preferred at 800/sup 0/C. Experiments using phosgene to chlorinate acid-leached Texas lignite fly ash gave information about the kinetic rate dependence of the reaction involved. Work to determine the amount of chemisorption and physical adsorption of phosgene on pellets of the leached Texas lignite ash was initiated to permit the calculation of surface reaction rates. Separation of FeCl/sub 3/ by solvent extraction improved as the chloride ion concentration of the aqueous phase increased, regardless of whether the associated cation was hydrogen or aluminum. A static equilibrium cell/furnace arrangement with ultraviolet spectroscopymore »
- Authors:
- Publication Date:
- Research Org.:
- Ames Lab., IA (USA)
- OSTI Identifier:
- 5767423
- Report Number(s):
- IS-4829
ON: DE83016748
- DOE Contract Number:
- W-7405-ENG-82
- Resource Type:
- Technical Report
- Resource Relation:
- Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 01 COAL, LIGNITE, AND PEAT; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ALUMINIUM CHLORIDES; RECOVERY; ALUMINIUM OXIDES; CHLORINATION; FLY ASH; SORPTIVE PROPERTIES; IRON CHLORIDES; PHOSGENE; CHEMISORPTION; SILICON OXIDES; WATER; ADSORPTION; CHEMICAL REACTION KINETICS; HICHLOR PROCESS; SEPARATION PROCESSES; SINTERING; AEROSOL WASTES; ALUMINIUM COMPOUNDS; ASHES; CARBONIC ACID DERIVATIVES; CHALCOGENIDES; CHEMICAL REACTIONS; CHLORIDES; CHLORINE COMPOUNDS; FABRICATION; HALIDES; HALOGEN COMPOUNDS; HALOGENATION; HYDROGEN COMPOUNDS; IRON COMPOUNDS; KINETICS; MANAGEMENT; ORGANIC CHLORINE COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PROCESSING; REACTION KINETICS; RESIDUES; SILICON COMPOUNDS; SORPTION; SURFACE PROPERTIES; TRANSITION ELEMENT COMPOUNDS; WASTE MANAGEMENT; WASTE PROCESSING; WASTES; 010800* - Coal, Lignite, & Peat- Waste Management; 320305 - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Industrial Waste Management
Citation Formats
Burnet, G, Murtha, M J, and Seaverson, L M. Direct utilization - recovery of minerals from coal fly ash. Technical progress report, October 1, 1982-December 31, 1982. United States: N. p., 1983.
Web.
Burnet, G, Murtha, M J, & Seaverson, L M. Direct utilization - recovery of minerals from coal fly ash. Technical progress report, October 1, 1982-December 31, 1982. United States.
Burnet, G, Murtha, M J, and Seaverson, L M. 1983.
"Direct utilization - recovery of minerals from coal fly ash. Technical progress report, October 1, 1982-December 31, 1982". United States.
@article{osti_5767423,
title = {Direct utilization - recovery of minerals from coal fly ash. Technical progress report, October 1, 1982-December 31, 1982},
author = {Burnet, G and Murtha, M J and Seaverson, L M},
abstractNote = {Research included an examination of the adsorbed water on coal fly ash, the utilization of phosgene as a chlorination agent, the physical adsorption and chemisorption of phosgene on fly ash particles, and the aqueous separation of chlorination products. Results of an investigation of coal fly ash powder samples using photoacoustic infrared spectroscopy showed almost complete removal of adsorbed water after drying for 30 hours at 700/sup 0/C. A thermodynamic computer simulation of the chlorination of an SiO/sub 2/ and Al/sub 2/O/sub 3/ mixture of 2:1 molar ratio with a stoichiometric amount of carbon present revealed that silica is the preferred reactant at lower temperature, but that alumina chlorination is preferred at 800/sup 0/C. Experiments using phosgene to chlorinate acid-leached Texas lignite fly ash gave information about the kinetic rate dependence of the reaction involved. Work to determine the amount of chemisorption and physical adsorption of phosgene on pellets of the leached Texas lignite ash was initiated to permit the calculation of surface reaction rates. Separation of FeCl/sub 3/ by solvent extraction improved as the chloride ion concentration of the aqueous phase increased, regardless of whether the associated cation was hydrogen or aluminum. A static equilibrium cell/furnace arrangement with ultraviolet spectroscopy capability has been confirmed to be suitable for measurement of the absorbance of vapor species. A Harper 6 in. dia rotary kiln was used to continuously sinter a limestone-soda ash-fly ash mixture in the form of 1/8 in. dia pellets. Extraction of sintered material with dilute aqueous soda ash solution gave aluminate recoveries comparable to those obtained when small samples were sintered in a benchscale tube furnace. Results are presented which show that x-ray diffraction data can be used to calculate the amounts of individual compounds in sintered samples.},
doi = {},
url = {https://www.osti.gov/biblio/5767423},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 01 00:00:00 EST 1983},
month = {Tue Feb 01 00:00:00 EST 1983}
}