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Reduced temperature aluminum production in an electrolytic cell having an inert anode

United States Patent

February 29, 2000
View the Complete Patent at the US Patent & Trademark Office
Aluminum is produced by electrolytic reduction of alumina in a cell having a cathode, an inert anode and a molten salt bath containing metal fluorides and alumina. The inert anode preferably contains copper, silver and oxides of iron and nickel. Reducing the molten salt bath temperature to about C. lowers corrosion on the inert anode constituents.
Dawless; Robert K. (Monroeville, PA), Ray; Siba P. (Murrysville, PA), Hosler; Robert B. (Sarver, PA), Kozarek; Robert L. (Apollo, PA), LaCamera; Alfred F. (Trafford, PA)
Aluminum Company of America (Pittsburgh, PA)
08/ 926,530
September 10, 1997
The Government has rights in this invention pursuant to Contract No. DE-FC07-89 ID 12848 awarded by the Department of Energy.