Title:
リチウムの精製方法
Document Type and Number:
Japanese Patent JP7115123
Kind Code:
B2
Abstract:
To purify lithium by recovering high purity lithium carbonate from process wastewater of a secondary battery positive electrode material containing a lithium ion.SOLUTION: There is provided a purification method of lithium for purifying lithium from manufacturing process wastewater containing lithium of a positive electrode material for a lithium secondary battery, having an ion exchange process for getting the manufacturing process wastewater in contact with an ion exchange resin, an elution process for getting an eluent in contact with the ion exchange resin after the ion exchange process, a crystallization process for adding a carbonic acid source to the elution post liquid after the elution process, a carbonic acid hydrogenating process for introducing carbon dioxide to lithium carbonate after the crystallization process, and a re-crystallization process for heating the lithium hydrogen carbonate after the carbonic acid hydrogenating process.SELECTED DRAWING: Figure 2
Inventors:
Masatoshi Takano
Yohei Kudo
Osamu Ikeda
Shinya Matsumoto
Asano Satoshi
Yohei Kudo
Osamu Ikeda
Shinya Matsumoto
Asano Satoshi
Application Number:
JP2018146207A
Publication Date:
August 09, 2022
Filing Date:
August 02, 2018
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C22B26/12; B01D9/02; B01J39/05; B01J39/07; B01J49/06; B01J49/12; B01J49/53; B01J49/70; C02F1/42; C22B3/42; C22B3/44; C22B7/00; H01M10/54
Domestic Patent References:
| JP5033007B1 | ||||
| JP20116275A | ||||
| JP2012172223A | ||||
| JP2010265142A | ||||
| JP201834095A |
Foreign References:
| WO2013146391A1 |
Attorney, Agent or Firm:
Akira Koike
Takaaki Kono
Hiroyuki Murakami
Takaaki Kono
Hiroyuki Murakami