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Title: Method of winning aluminum metal from aluminous ore

Abstract

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 (A1S) 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.

Inventors:
; ;
OSTI Identifier:
5490121
Assignee:
TIC; ERA-05-024361; EDB-80-066796
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ALUMINIUM; PRODUCTION; ALUMINIUM SULFIDES; BAUXITE; SEPARATION PROCESSES; CARBON; CHEMICAL REACTIONS; COKE; ENERGY CONSERVATION; REDUCTION; SULFUR; ALUMINIUM COMPOUNDS; ALUMINIUM ORES; CHALCOGENIDES; ELEMENTS; METALS; MINERALS; NONMETALS; ORES; SULFIDES; SULFUR COMPOUNDS; 360101* - Metals & Alloys- Preparation & Fabrication; 320000 - Energy Conservation, Consumption, & Utilization

Citation Formats

Loutfy, R O, Keller, R, and Yao, N P. Method of winning aluminum metal from aluminous ore. United States: N. p., Web.
Loutfy, R O, Keller, R, & Yao, N P. Method of winning aluminum metal from aluminous ore. United States.
Loutfy, R O, Keller, R, and Yao, N P. . "Method of winning aluminum metal from aluminous ore". United States.
@article{osti_5490121,
title = {Method of winning aluminum metal from aluminous ore},
author = {Loutfy, R O and Keller, R and Yao, N P},
abstractNote = {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 (A1S) 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {},
month = {}
}