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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.:

US 12534776 B1

PDFFull Text
Date of Patent:
Jan. 27, 2026

Filed:

Apr. 22, 2021

Method for producing mixed metal solution and method for producing mixed metal salt

Applicant:

Jx Metals Circular Solutions Co., Ltd., Tokyo, JP;

Inventors:

Junichi Arakawa, Hitachi, JP;

Kazunori Tajiri, Hitachi, JP;

Assignee:

JX METALS CIRCULAR SOLUTIONS CO., LTD., Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Cam N Nguyen

Int. Cl.
CPC ...
C01G 53/40 (2025.01); B09B 3/35 (2022.01); C01F 7/00 (2022.01); C01G 45/01 (2025.01); C01G 45/02 (2006.01); C01G 51/01 (2025.01); C01G 51/04 (2006.01); C01G 53/01 (2025.01); C01G 53/04 (2006.01); C01G 53/44 (2025.01); C01G 53/50 (2025.01); C22B 3/00 (2006.01); C22B 3/04 (2006.01); C22B 3/32 (2006.01); C22B 21/00 (2006.01); C22B 47/00 (2006.01); H01M 10/54 (2006.01);
U.S. Cl.
CPC ...
C22B 23/0415 (2013.01); B09B 3/35 (2022.01); C01F 7/00 (2013.01); C01G 45/01 (2025.01); C01G 45/02 (2013.01); C01G 51/01 (2025.01); C01G 51/04 (2013.01); C01G 53/01 (2025.01); C01G 53/04 (2013.01); C22B 3/04 (2013.01); C22B 3/32 (2021.05); C22B 21/0023 (2013.01); C22B 47/00 (2013.01); H01M 10/54 (2013.01); C01P 2006/40 (2013.01);
Abstract

A method for producing a mixed metal solution containing manganese ions and at least one of cobalt ions and nickel ions, the method including: an Al removal step of subjecting an acidic solution containing at least manganese ions and aluminum ions, and at least one of cobalt ions and nickel ions, to removal of the aluminum ions by extracting the aluminum ions into a solvent while leaving at least a part of the manganese ions in the acidic solution in an aqueous phase, the acidic solution being obtained by subjecting battery powder of lithium ion batteries to a leaching step; and a metal extraction step of bringing an extracted residual liquid obtained in the Al removal step to an equilibrium pH of 6.5 to 7.5 using a solvent containing a carboxylic acid-based extracting agent, extracting at least one of the manganese ions and at least one of the cobalt ions and the nickel ions into the solvent, and then back-extracting the manganese ions and at least one of the cobalt ions and nickel ions.

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Arakawa, Junichi. (2026). Method for producing mixed metal solution and method for producing mixed metal salt (U.S. Patent No. 12534776). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12534776

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