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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 9677152 B1

PDFFull Text
Date of Patent:
Jun. 13, 2017

Filed:

Feb. 10, 2012

Method for recovering lithium

Applicants:

Satoshi Asano, Ehime, JP;

Hitoshi Ishida, Ehime, JP;

Takayuki Nakai, Ehime, JP;

Inventors:

Satoshi Asano, Ehime, JP;

Hitoshi Ishida, Ehime, JP;

Takayuki Nakai, Ehime, JP;

Assignee:

SUMITOMO METAL MINING CO., LTD., Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Steven Bos

Int. Cl.
CPC ...
C22B 26/00 (2006.01); C22B 26/12 (2006.01); C22B 3/26 (2006.01); C22B 3/44 (2006.01); C22B 7/00 (2006.01); H01M 10/54 (2006.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
C22B 26/12 (2013.01); C22B 3/0005 (2013.01); C22B 3/44 (2013.01); C22B 7/006 (2013.01); H01M 10/052 (2013.01); H01M 10/54 (2013.01); Y02P 10/234 (2015.11); Y02W 30/84 (2015.05);
Abstract

To provide a method for recovering lithium, that is capable of efficiently recovering lithium without containing impurities, such as phosphorus and fluorine, from a lithium-containing solution containing lithium hexafluorophosphate and separated from a lithium ion battery. In the present invention, alkali hydroxide is added to the lithium-containing solution and the solution is made to have pH 9 or more, a precipitate of a phosphate and a fluoride salt is formed, the formed precipitate is separated and removed, and then lithium is recovered from filtrate.

Find Patent Forward Citations

Asano, Satoshi. (2017). Method for recovering lithium (U.S. Patent No. 9677152). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9677152

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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