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Cu--Ni--Fe anode for use in aluminum producing electrolytic cell

United States Patent

July 18, 2006
View the Complete Patent at the US Patent & Trademark Office
A method of producing aluminum in an electrolytic cell containing alumina dissolved in an electrolyte, the method comprising the steps of providing a molten salt electrolyte at a temperature of less than C. having alumina dissolved therein in an electrolytic cell having a liner for containing the electrolyte, the liner having a bottom and walls extending upwardly from said bottom. A plurality of non-consumable Cu--Ni--Fe anodes and cathodes are disposed in a vertical direction in the electrolyte, the cathodes having a plate configuration and the anodes having a flat configuration to compliment the cathodes. The anodes contain apertures therethrough to permit flow of electrolyte through the apertures to provide alumina-enriched electrolyte between the anodes and the cathodes. Electrical current is passed through the anodes and through the electrolyte to the cathodes, depositing aluminum at the cathodes and producing gas at the anodes.
Bergsma; S. Craig (The Dalles, OR), Brown; Craig W. (Seattle, WA), Bradford; Donald R (Underwood, WA), Barnett; Robert J. (Goldendale, WA), Mezner; Michael B. (Sandy, OR)
Northwest Aluminum Technologies (Seattle, WA)
10/ 431,403
May 8, 2003
The government has rights in this invention pursuant to Contract No. DE-FC36-98ID03ER13033 awarded by the Department of Energy.