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. 30, 2021
Filed:
Apr. 12, 2016
Applicant:
The Doe Run Resources Corporation, St. Louis, MO (US);
Inventor:
Timothy Roy Hymer, Labadie, MO (US);
Assignee:
THE DOE RUN RESOURCES CORPORATION, St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25C 1/12 (2006.01); C22B 15/00 (2006.01); C22B 3/10 (2006.01);
U.S. Cl.
CPC ...
C25C 1/12 (2013.01); C22B 3/10 (2013.01); C22B 15/0069 (2013.01); C22B 15/0078 (2013.01); C22B 15/0084 (2013.01); Y02P 10/20 (2015.11);
Abstract
A process for recovering copper from copper sulfide minerals, the method comprising the steps of leaching copper sulfide minerals with an aqueous solution of ammonium chloride containing cupric chloride at a temperature of between about 40° C. and about 95° C. at atmospheric pressure, to produce a solution of cuprous/cupric chloride.