Title:
リチウム回収方法
Document Type and Number:
Japanese Patent JP6946223
Kind Code:
B2
Abstract:
To provide a lithium recovery method capable of effectively prevent a liquid phase from becoming white turbid during solvent extraction when concentrating lithium ions in a lithium solution obtained from lithium ion battery scrap.SOLUTION: A method for recovering lithium from lithium ion battery scrap includes: a roasting step of roasting lithium ion battery scrap to obtain battery powder; a lithium dissolution step of bringing the battery powder into contact with water or an acidic solution to dissolve lithium in the battery powder to obtain a lithium solution; a lithium concentration step of subjecting lithium ions contained in the lithium solution to solvent extraction and back extraction to concentrate the lithium ions to obtain a lithium concentrate; and a carbonation step of carbonating the lithium ions in the lithium concentrate to obtain a lithium carbonate; where sodium is added to the solution before the solvent extraction of the lithium ions in the lithium concentration step.SELECTED DRAWING: Figure 1
Inventors:
Junichi Arakawa
Yasufumi Haga
Yasufumi Haga
Application Number:
JP2018063129A
Publication Date:
October 06, 2021
Filing Date:
March 28, 2018
Export Citation:
Assignee:
JX Nippon Mining & Metals Co., Ltd.
International Classes:
C22B26/12; B01D11/04; B09B3/00; B09B5/00; C22B1/02; C22B3/04; C22B3/06; C22B3/26; C22B3/38; C22B3/44; C22B7/00
Domestic Patent References:
| JP2006057142A | ||||
| JP2012172223A | ||||
| JP2010229534A | ||||
| JP2015098621A |
Foreign References:
| KR1020130094978A |
Attorney, Agent or Firm:
Axis International Patent Business Corporation