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:
Mar. 24, 2020
Filed:
Oct. 11, 2017
Applicant:
Barrick Gold Corporation, Toronto, CA;
Inventors:
Yeonuk Choi, Oakville, CA;
Ahmad Ghahremaninezhad Gharelar, Kingston, CA;
Assignee:
BARRICK GOLD CORPORATION, Toronto, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B 3/00 (2006.01); C22B 3/04 (2006.01); C22B 1/00 (2006.01); C22B 3/08 (2006.01);
U.S. Cl.
CPC ...
C22B 11/04 (2013.01); C22B 1/00 (2013.01); C22B 3/04 (2013.01); C22B 3/08 (2013.01); Y02P 10/234 (2015.11);
Abstract
The disclosure relates to pre-treatment of precious metal-bearing oxide ores, prior to precious metal leaching by thiosulfate. The process comprises mixing oxide ore in oxygenated water in the presence of a carbon-based material (e.g., activated carbon or other type of carbon). The carbon-based material can be separated from the ore slurry, and, the gold is thereafter leached by a thiosulfate lixiviant.