Title:
リチウム回収方法
Document Type and Number:
Japanese Patent JP6640783
Kind Code:
B2
Abstract:
A method for recovering lithium from lithium ion battery scrap according to this invention comprises subjecting lithium ion battery scrap to a calcination step, a crushing step, and a sieving step sequentially carried out, wherein the method comprises, between the calcination step and the crushing step, between the crushing step and the sieving step, or after the sieving step, a lithium dissolution step of bringing the lithium ion battery scrap into contact with water and dissolving lithium contained in the lithium ion battery scrap in the water to obtain a lithium-dissolved solution; a lithium concentration step of solvent-extracting lithium ions contained in the lithium-dissolved solution and stripping them 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 lithium carbonate.
Inventors:
Junichi Arakawa
Yasufumi Haga
Junichi Ito
Yasufumi Haga
Junichi Ito
Application Number:
JP2017072018A
Publication Date:
February 05, 2020
Filing Date:
March 31, 2017
Export Citation:
Assignee:
JX Nippon Mining & Metals Co., Ltd.
International Classes:
C22B7/00; B09B3/00; B09B5/00; C22B1/02; C22B3/26; C22B3/38; C22B3/44; C22B23/00; C22B26/12
Domestic Patent References:
| JP2014162982A | ||||
| JP2013095951A | ||||
| JP2011074410A | ||||
| JP2005026089A | ||||
| JP2012172223A |
Foreign References:
| WO2014042136A1 |
Attorney, Agent or Firm:
Axis International Patent Business Corporation