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:
Feb. 22, 2022
Filed:
Jul. 26, 2019
Applicant:
Korea Resources Corporation, Wonju-si, KR;
Inventors:
Assignee:
KOREA RESOURCES CORPORATION, Wonju-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G 51/00 (2006.01); C01G 49/00 (2006.01); C01G 49/02 (2006.01); C22B 19/20 (2006.01); C01G 9/00 (2006.01); C22B 3/00 (2006.01); C01F 7/34 (2006.01);
U.S. Cl.
CPC ...
C01G 51/003 (2013.01); C01F 7/34 (2013.01); C01G 9/003 (2013.01); C01G 49/0009 (2013.01); C01G 49/02 (2013.01); C22B 19/20 (2013.01); C22B 23/0461 (2013.01);
Abstract
Provided is a method for inhibiting extractant degradation in the DSX process through the metal extraction control, the method comprising steps of: (a) adding limestone to a copper solvent extraction-raffinate to precipitate iron (Fe) and aluminum (Al) as a slurry, recovering a clarifying liquid; and (b) adding sulfuric acid to the recovered clarifying liquid to adjust the pH thereof.