Title:
リチウム含有溶液の製造方法
Document Type and Number:
Japanese Patent JP7415948
Kind Code:
B2
Abstract:
Provided is a method for producing a lithium-containing solution that prevents the dissolution of the whole lithium manganese oxide while maintaining the efficiency of an elution step. The method for producing a lithium-containing solution comprises performing an adsorption step of contacting a lithium adsorbent obtained from lithium manganese oxide with a low lithium-containing liquid for adsorption to give post-adsorption lithium manganese oxide, an elution step of contacting the post-adsorption lithium manganese oxide with an acid solution to give a lithium-containing solution with residual manganese, and a manganese oxidation step of oxidating manganese to give a lithium-containing solution with a suppressed manganese concentration, performed in this order. The acid solution is a 0.5 mol/L or more and 4.0 mol/L or less hydrochloric acid solution. Accordingto the production method, in the elution step, the dissolution of the whole lithium manganese oxide can be suppressed while maintaining the efficiency of exchange reaction between cations including Li+ and H+. Thus, the repeated use of the lithium adsorbent becomes possible.
Inventors:
Masatoshi Takano
Satoshi Asano
Osamu Ikeda
Shinya Matsumoto
Yohei Kudo
Satoshi Asano
Osamu Ikeda
Shinya Matsumoto
Yohei Kudo
Application Number:
JP2020560044A
Publication Date:
January 17, 2024
Filing Date:
December 06, 2019
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C01G45/12; B01J20/06; B01J20/34; C01D15/00; C01G45/00; C22B3/24; C22B3/44; C22B26/12
Domestic Patent References:
| JP2005501973A | ||||
| JP2018040035A | ||||
| JP2015209551A | ||||
| JP2015020090A |
Other References:
OOI Kenta et al.,Hydrometallurgy,2017年,Vol. 169,pp. 31-40
Attorney, Agent or Firm:
Patent Attorney Corporation Yamauchi Patent Office