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Electrolytic cell for producing aluminum employing planar anodes

United States Patent

October 5, 2004
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 providing a molten salt electrolyte having alumina dissolved therein in an electrolytic cell. A plurality of anodes and cathodes having planar surfaces are disposed in a generally vertical orientation in the electrolyte, the anodes and cathodes arranged in alternating or interleaving relationship to provide anode planar surfaces disposed opposite cathode planar surfaces, the anode comprised of carbon. Electric current is passed through anodes and through the electrolyte to the cathodes depositing aluminum at the cathodes and forming carbon containing gas at the anodes.
Barnett; Robert J. (Goldendale, WA), Mezner; Michael B. (Sandy, OR), Bradford; Donald R (Underwood, WA)
Northwest Aluminum Technologies (Seattle, WA)
10/ 098,141
March 15, 2002
The government has rights in this invention pursuant to Contract No. DE-FC07-98ID13662 awarded by the Department of Energy.