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Use of Coal Wastes for the Production of Alumina.

PB84223460

Publication Date	1983
Personal Author	Sohn, H. Y.
Page Count	76
Abstract	The primary resource for aluminum at the present time is bauxite. The United States has become more and more dependent on foreign sources for its supply of this strategic material because of its small bauxite resources, which are considered inadequate as a long-range supply. However, domestic low-grade aluminum resources, including coal waste, are considered unlimited. The development of a suitable method for using coal wastes will also alleviate their disposal problems. This report describes three methods of extracting alumina from domestic coal wastes using their carbon contents as a fuel and a reductant of silica contained therein.
Keywords	Aluminum oxide Solid waste disposal Materials recovery Coal mining Extraction Sintering Leaching Separation Volatilization Coal refuse Mine wastes Waste utilization Lime soda sinter process
Source Agency	Bureau of Mines
NTIS Subject Category	68C - Solid Wastes Pollution & Control 48A - Mineral Industries
Corporate Authors	Utah Univ., Salt Lake City. Dept. of Metallurgy and Metallurgical Engineering.; Bureau of Mines, Washington, DC.
Supplemental Notes	Sponsored in part by Grant G1195049.
Document Type	Technical Report
Title Note	Rept. for Sep 79-Dec 83.
NTIS Issue Number	198422

Use of Coal Wastes for the Production of Alumina.

Use of Coal Wastes for the Production of Alumina.
PB84223460

Publication Date	1983
Personal Author	Sohn, H. Y.
Page Count	76
Abstract	The primary resource for aluminum at the present time is bauxite. The United States has become more and more dependent on foreign sources for its supply of this strategic material because of its small bauxite resources, which are considered inadequate as a long-range supply. However, domestic low-grade aluminum resources, including coal waste, are considered unlimited. The development of a suitable method for using coal wastes will also alleviate their disposal problems. This report describes three methods of extracting alumina from domestic coal wastes using their carbon contents as a fuel and a reductant of silica contained therein.
Keywords	Aluminum oxide Solid waste disposal Materials recovery Coal mining Extraction Sintering Leaching Separation Volatilization Coal refuse Mine wastes Waste utilization Lime soda sinter process
Source Agency	Bureau of Mines
NTIS Subject Category	68C - Solid Wastes Pollution & Control 48A - Mineral Industries
Corporate Authors	Utah Univ., Salt Lake City. Dept. of Metallurgy and Metallurgical Engineering.; Bureau of Mines, Washington, DC.
Supplemental Notes	Sponsored in part by Grant G1195049.
Document Type	Technical Report
Title Note	Rept. for Sep 79-Dec 83.
NTIS Issue Number	198422