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:
Jun. 26, 2012
Filed:
Apr. 29, 2009
Xiangwen Wang, Murrysville, PA (US);
Gary Tarcy, Murrysville, PA (US);
Xiangwen Wang, Murrysville, PA (US);
Gary Tarcy, Murrysville, PA (US);
Alcoa Inc., Pittsburgh, PA (US);
Abstract
Systems, methods and apparatus for reducing impurities in electrolysis cells are disclosed. In one approach, a method includes feeding a particulate fines feed stream to a tank, mixing particulate fines (PF) with liquid, the liquid having a first liquid and a second liquid, and separating at least some of the first liquid from at least some of the second liquid. The particulate fines (PF) may include inlet carbon fines (CF) and inlet recyclable fines (RF). The first liquid may include a recovered recyclable fines portion (RF), and the second liquid may include a waste carbon fines portion (CF). The mass ratio of the recovered recyclable fines portion (RF) to the inlet recyclable fines (RF) may be at least about 0.5. The mass ratio of the waste carbon fines portion (CF) to the inlet carbon fines (CF) may be at least about 0.1.