Carbothermic production of aluminum

Details Carbothermic production of aluminum Carbothermic production of aluminum

C - Chemistry, Metallurgy

22

B

53/242

C22B 21/02 (2006.01)

Patent

CA 1045826

A B S T R A C T A carbothermic process for the production of aluminum metal contaminated with no more than about 5 weight percent of aluminum carbide in a single furnace operation which comprises contacting a feed comprising an oxide of aluminum and a carbon-containing compound such as aluminum carbide in an open arc furnace wherein heat is applied via an open arc in a manner such that only the surface of the charge is raised to reaction temperature and the aluminum which is formed in the condensed state is then allowed to flow at a temperature sufficiently low to prevent substantial contamination with aluminum carbide. -1-

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