Title:
リチウムの回収方法
Document Type and Number:
Japanese Patent JP7102743
Kind Code:
B2
Abstract:
To provide a method for recovering lithium in which calcium is efficiently and simply separated from wastewater in a manufacturing step of containing lithium and calcium.SOLUTION: Disclosed is a lithium recovery method in which lithium is recovered from wastewater in a manufacturing step of containing lithium and calcium of a positive electrode material for a lithium secondary battery. This method includes: a suction step of bringing wastewater in the manufacturing step into contact with a plurality of ion exchange resins connected in series; and an elution step of separating the plurality of ion exchange resins after the suction step and bringing an eluent into contact with each ion exchange resin. Lithium is recovered from the ion exchange resin selectively sucked by lithium ions in the suction step.SELECTED DRAWING: Figure 2
Inventors:
Masatoshi Takano
Yohei Kudo
Osamu Ikeda
Jiro Nakanishi
Asano Satoshi
Yohei Kudo
Osamu Ikeda
Jiro Nakanishi
Asano Satoshi
Application Number:
JP2018004520A
Publication Date:
July 20, 2022
Filing Date:
January 15, 2018
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
H01M10/54; B01J39/05; B01J39/18; B01J47/016; B01J47/026; B01J49/06; C02F1/42; C22B3/42; C22B26/12
Domestic Patent References:
| JP2000119765A | ||||
| JP9141109A | ||||
| JP50033007B1 | ||||
| JP2006057142A | ||||
| JP2012234732A | ||||
| JP2019044246A |
Foreign References:
| US5681477 |
Attorney, Agent or Firm:
Akira Koike
Takaaki Kono
Hiroyuki Murakami
Takaaki Kono
Hiroyuki Murakami