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:
Nov. 24, 2015
Filed:
Oct. 23, 2013
Applicant:
Barrick Gold Corporation, Toronto, CA;
Inventors:
Qiankun Wang, Pitt Meadows, CA;
Nathan Stubina, Oakville, CA;
Wayne Douglas, Spring Creek, NV (US);
Todd Esplin, Spring Creek, NV (US);
Jodi Esplin, Spring Creek, NV (US);
Sajan Bhakta, Elko, NV (US);
Assignee:
Barrick Gold Corporation, Toronto, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22B 11/00 (2006.01); C22B 3/44 (2006.01); C22B 1/02 (2006.01); C22B 3/06 (2006.01); C22B 3/00 (2006.01); C22C 5/02 (2006.01); C22C 5/06 (2006.01);
U.S. Cl.
CPC ...
C22B 11/04 (2013.01); C22B 1/02 (2013.01); C22B 3/06 (2013.01); C22B 3/44 (2013.01); C22C 5/02 (2013.01); C22C 5/06 (2013.01);
Abstract
A method to recover gold lost in roaster calcine-leach tailings, due to the formation of cyanide refractory compounds or morphologies during the roasting process. The process can include acid leaching of magnetic concentrate from roaster leach tailings, combining the acid leach slurry to the pre-acidulation tank for pressure oxidation feed, acid pressure oxidation of the pressure oxidation feed, and recovery of gold.