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:
Apr. 11, 2017
Filed:
Oct. 07, 2011
Applicants:
Justin Salminen, Helsinki, FI;
Teppo Riihimäki, Linnavuori, FI;
Mikko Ruonala, Kantvik, FI;
Inventors:
Assignee:
OUTOTEC OYJ, Espoo, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B 58/00 (2006.01); C22B 3/46 (2006.01); C22B 19/16 (2006.01); C22B 41/00 (2006.01);
U.S. Cl.
CPC ...
C22B 58/00 (2013.01); C22B 3/46 (2013.01); C22B 19/16 (2013.01); C22B 41/00 (2013.01); Y02P 10/234 (2015.11);
Abstract
The invention relates to a method for treating a solution containing zinc sulphate, so that at least one of the rare metals such as indium, gallium and germanium can be separated from it. A portion of the metals to be separated can be precipitated from zinc sulphate solution by neutralizing the acidic solution and at least a portion is cemented by means of metal powder. The solid precipitates that are formed can be combined and treated subsequently in some suitable way to leach out the desired metals.