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. 17, 2020
Filed:
Mar. 13, 2019
Applicant:
Outotec (Finland) Oy, Espoo, FI;
Inventors:
Assignee:
OUTOTEC (FINLAND) OY, Espoo, FI;
Primary Examiner:
Int. Cl.
CPC ...
B03D 1/02 (2006.01); C22B 3/22 (2006.01); C22B 3/00 (2006.01); B03D 1/14 (2006.01); C22B 3/20 (2006.01);
U.S. Cl.
CPC ...
C22B 3/22 (2013.01); B03D 1/02 (2013.01); B03D 1/1431 (2013.01); B03D 1/1437 (2013.01); C22B 3/20 (2013.01); C22B 11/04 (2013.01); B03D 2201/007 (2013.01); B03D 2203/025 (2013.01); Y02P 10/234 (2015.11);
Abstract
A method for recovering at least one precious metal from an aqueous solution containing the metal and particularly to recovery of silver and optionally one or more other precious metals from overflow of a sedimentation unit such as a thickener, a clarifier or a pond includes subjecting the aqueous solution to a micro and/or nanobubble flotation, wherein the pH of the aqueous solution is at most 1.5.