Title:
リチウム回収方法
Document Type and Number:
Japanese Patent JP7101995
Kind Code:
B2
Abstract:
To provide a lithium recovery method, in which cobalt can be recovered at a high recovery rate from a liquid to be treated in which lithium is dissolved.SOLUTION: The lithium recovery method includes: a carbonation step S8 for mixing carbon dioxide gas and/or adding water-soluble carbonate to a liquid to be treated in which lithium is at least dissolved; a solid/liquid separation step S9 for separating the precipitate containing crystals of lithium carbonate precipitated by the carbonation step S8 from the liquid to be treated; and an electrolysis step S10 for separating and recovering an alkali containing at least lithium hydroxide from the liquid to be treated by subjecting the liquid to be treated after the solid/liquid separation step S9 to bipolar membrane electrodialysis.SELECTED DRAWING: Figure 1
Inventors:
Miho Yoshiaki
Kihira Yukinori
Kaho Yokoyama
Kazuhiko Ishida
Satoru Hirano
Yoshihiro Fujiwara
Kihira Yukinori
Kaho Yokoyama
Kazuhiko Ishida
Satoru Hirano
Yoshihiro Fujiwara
Application Number:
JP2019028547A
Publication Date:
July 19, 2022
Filing Date:
February 20, 2019
Export Citation:
Assignee:
Sakura Co., Ltd.
International Classes:
C22B26/12; B01D61/44; B01D61/52; C01D15/02; C01D15/08; C22B1/02; C22B3/06; C22B3/22; C22B3/44; C22B7/00
Domestic Patent References:
| JP2012171827A | ||||
| JP2018172732A | ||||
| JP2012234732A |
Foreign References:
| WO2011132282A1 | ||||
| WO2018181816A1 | ||||
| US20170342573 |
Attorney, Agent or Firm:
Patent Business Corporation Saegusa International Patent Office