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:
May. 26, 2009
Filed:
Nov. 09, 2007
Applicant:
Jean-marc Lalancette, Sherbrooke, CA;
Inventor:
Jean-Marc Lalancette, Sherbrooke, CA;
Assignee:
Nichromet Extraction Inc., Montreal, Quebec, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22B 3/12 (2006.01); C22B 11/06 (2006.01); C22B 13/00 (2006.01); C22B 15/00 (2006.01); C22B 19/00 (2006.01); C22B 21/00 (2006.01); C22B 23/00 (2006.01); C22B 25/00 (2006.01); C22B 61/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for treating a polymetallic sulfide ore containing gold and/or silver, and further containing base metals selected from the group consisting of iron, aluminum, chromium, titanium, copper, zinc, lead, nickel, cobalt, mercury, tin, and mixtures thereof, is disclosed. The method comprises the steps of grinding the polymetallic sulfide ore to produce granules, oxidizing the granules to produce oxidized granules, and chloride leaching the granules using a brine solution including dissolved halogens, as well as chloride and bromide salts.