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. 12, 2024
Filed:
Aug. 11, 2021
Applicant:
Mitsubishi Materials Corporation, Tokyo, JP;
Inventor:
Hiroki Muraoka, Iwaki, JP;
Assignee:
MITSUBISHI MATERIALS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G 51/04 (2006.01); C01G 53/04 (2006.01); C22B 3/00 (2006.01); C22B 3/08 (2006.01); C22B 3/12 (2006.01); C22B 3/22 (2006.01); C22B 21/00 (2006.01); H01M 10/54 (2006.01);
U.S. Cl.
CPC ...
H01M 10/54 (2013.01); C01G 51/04 (2013.01); C01G 53/04 (2013.01); C22B 3/08 (2013.01); C22B 3/12 (2013.01); C22B 3/22 (2013.01); C22B 21/0023 (2013.01); C22B 23/043 (2013.01); C22B 23/0446 (2013.01);
Abstract
A method of recovering cobalt and nickel includes the steps of: adding alkaline to an acidic solution containing aluminum together with cobalt and nickel, adjusting pH of the acidic solution to 5 to 7, and converting the cobalt, the nickel and the aluminum into hydroxides thereof; recovering the hydroxides by solid-liquid separation, mixing the recovered hydroxides with an alkaline solution, and leaching aluminum contained in the hydroxides under a liquid condition of pH 8 or more; and recovering a cobalt hydroxide and a nickel hydroxide that aluminum is separated therefrom by solid-separation on a leachate.