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Electrolytic production of high purity aluminum using ceramic inert anodes

United States Patent

July 9, 2002
View the Complete Patent at the US Patent & Trademark Office
A method of producing commercial purity aluminum in an electrolytic reduction cell comprising ceramic inert anodes is disclosed. The method produces aluminum having acceptable levels of Fe, Cu and Ni impurities. The ceramic inert anodes used in the process may comprise oxides containing Fe and Ni, as well as other oxides, metals and/or dopants.
Ray; Siba P. (Murrysville, PA), Liu; Xinghua (Monroeville, PA), Weirauch; Douglas A. (Murrysville, PA), DiMilia; Robert A. (Baton Rouge, LA), Dynys; Joseph M. (New Kensington, PA), Phelps; Frankie E. (Apollo, PA), LaCamera; Alfred F. (Trafford, PA)
Alcoa Inc. (Pittsburgh, PA)
09/ 835,595
April 16, 2001
GOVERNMENT CONTRACT The United States Government has certain rights in this invention pursuant to Contract No. DE-FC07-98ID13666 awarded by the United States Department of Energy.