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. 05, 2019
Filed:
Jan. 21, 2015
Applicant:
Outotec (Finland) Oy, Espoo, FI;
Inventors:
Assignee:
OUTOTEC (FINLAND) OY, Espoo, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25C 1/12 (2006.01); C22B 3/00 (2006.01); C22B 15/00 (2006.01); C22B 19/20 (2006.01); C22B 3/42 (2006.01); C22B 3/46 (2006.01); C22B 3/26 (2006.01);
U.S. Cl.
CPC ...
C25C 1/12 (2013.01); C22B 3/0005 (2013.01); C22B 3/42 (2013.01); C22B 3/46 (2013.01); C22B 15/0063 (2013.01); C22B 15/0089 (2013.01); C22B 19/22 (2013.01); C22B 19/26 (2013.01); Y02P 10/234 (2015.11); Y02P 10/236 (2015.11);
Abstract
The present invention provides a method of recovering copper and zinc from an aqueous sulfate and chloride containing solution. In the first process step zinc and copper are simultaneous extracting with an extraction solution comprising a liquid chelating cation exchanger and a liquid anion exchanger. The extraction is followed by consecutive stripping stages. First the anionic species are washed from the organic phase with one or more aqueous solutions and finally the copper is stripped with an aqueous acidic solution.