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Electrolytic production of high purity aluminum using inert anodes

United States Patent

April 17, 2001
View the Complete Patent at the US Patent & Trademark Office
A method of producing commercial purity aluminum in an electrolytic reduction cell comprising inert anodes is disclosed. The method produces aluminum having acceptable levels of Fe, Cu and Ni impurities. The inert anodes used in the process preferably comprise a cermet material comprising ceramic oxide phase portions and metal phase portions.
Ray; Siba P. (Murrysville, PA), Liu; Xinghua (Monroeville, PA), Weirauch, Jr.; Douglas A. (Murrysville, PA)
Alcoa Inc. (Pittsburgh, PA)
09/ 431,756
November 1, 1999
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.