Carbothermic reduction with parallel heat sources

Details Carbothermic reduction with parallel heat sources Carbothermic reduction with parallel heat sources

1983-03-07

1984-12-04

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 10R, C22B 2100

Patent

active

044862296

ABSTRACT:
Disclosed are apparatus and method of carbothermic direct reduction for producing an aluminum alloy from a raw material mix including aluminum oxide, silicon oxide, and carbon wherein parallel heat sources are provided by a combustion heat source and by an electrical heat source at essentially the same position in the reactor, e.g., such as at the same horizontal level in the path of a gravity-fed moving bed in a vertical reactor. The present invention includes providing at least 79% of the heat energy required in the process by the electrical heat source.

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patent: 4033757 (1977-07-01), Kibby
patent: 4053303 (1977-10-01), Cochran et al.
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patent: 4269620 (1981-05-01), Johansson
patent: 4299619 (1981-11-01), Cochran et al.
patent: 4334917 (1982-06-01), Kibby
"Carbothermic Smelting of Aluminum", P. T. Stroup, Transactions of the Metallurgical Society of AIME, Apr., 1964.
"Reaction of Clay and Carbon to Form and Separate Al.sub.2 O.sub.3 and SiC", B. C. Bechtold and I. B. Cutler, J. Am. Cer. Soc., May/Jun. 1980.
"Reductio ad Aluminium", Far Eastern Economic Review, Jun. 18, 1982.

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