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

United States Patent

6,030,518
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 900-950.degree. 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.