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:
Feb. 01, 2005
Filed:
Dec. 04, 2003
Richard J. Fruehan, Murrysville, PA (US);
Yun LI, Murrysville, PA (US);
Gerald Carkin, Tarentum, PA (US);
Richard J. Fruehan, Murrysville, PA (US);
Yun Li, Murrysville, PA (US);
Gerald Carkin, Tarentum, PA (US);
Alcoa Inc., Pittsburgh, PA (US);
Elkem ASA, Oslo, NO;
Carnegie Mellon University, Pittsburgh, PA (US);
Abstract
In a method for recovering Al from an off-gas () produced during carbothermic reduction of aluminum utilizing at least one smelter (), the off-gas () is directed to an enclosed reactor () which is fed a supply of wood charcoal () having a porosity of from about 50 vol. % to 85 vol. % and an average pore diameter of from about 0.05 μm to about 2.00 μm, where the wood charcoal () contacts the off-gas () to produce at least AlC(), which is passed back to the smelter ().