The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 18, 2006
Filed:
May. 08, 2003
S. Craig Bergsma, The Dalles, OR (US);
Craig W. Brown, Seattle, WA (US);
Donald R Bradford, Underwood, WA (US);
Robert J. Barnett, Goldendale, WA (US);
Michael B. Mezner, Sandy, OR (US);
S. Craig Bergsma, The Dalles, OR (US);
Craig W. Brown, Seattle, WA (US);
Donald R Bradford, Underwood, WA (US);
Robert J. Barnett, Goldendale, WA (US);
Michael B. Mezner, Sandy, OR (US);
Northwest Aluminum Technologies, Seattle, WA (US);
Abstract
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 900° 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.