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:
Jan. 07, 2014
Filed:
Nov. 21, 2011
Applicants:
John William Langhans, Jr., Spring Creek, NV (US);
Wilson Chung-yeh Tsu, Elko, NV (US);
Inventors:
John William Langhans, Jr., Spring Creek, NV (US);
Wilson Chung-Yeh Tsu, Elko, NV (US);
Assignee:
Barrick Gold Corporation, Toronto, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 5/02 (2006.01); C22C 5/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention is directed to a precious metal recovery process in which an acid sulfidic feed material is subjected to acid pressure oxidation and an alkaline sulfidic feed material is subjected to alkaline pressure oxidation, with the discharge slurries from the pressure oxidation processes being combined to reduce neutralization requirements prior to precious metal recovery.