Title:
溶媒抽出方法およびコバルト水溶液の製造方法
Document Type and Number:
Japanese Patent JP7360091
Kind Code:
B2
Abstract:
To provide a solvent extraction method that can improve separability between nickel and cobalt in a nickel recovery stage.SOLUTION: A solvent extraction method includes a nickel recovery stage in which an acidic extraction agent carrying nickel and cobalt and an acid are brought into contact, for back extraction of nickel, to obtain a nickel recovery liquid. The extraction temperature in the nickel recovery stage is set to 47-60°C. Since the extraction temperature in the nickel recovery stage is set to 47°C or higher, a distribution rate of cobalt to an organic solvent can be increased while keeping a low distribution rate of nickel to the organic solvent, so that the separability between nickel and cobalt can be improved.SELECTED DRAWING: Figure 4
Inventors:
Hotaka Nakanishi
Makoto Suginohara
Tomohiko Yokokawa
Makoto Suginohara
Tomohiko Yokokawa
Application Number:
JP2019237927A
Publication Date:
October 12, 2023
Filing Date:
December 27, 2019
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C22B23/00; B01D11/04; C01G51/08; C01G53/10; C22B3/26; C22B3/38; C22B3/44
Domestic Patent References:
| JP2022502564A | ||||
| JP2017025367A | ||||
| JP2017149609A | ||||
| JP10060552A | ||||
| JP10030135A | ||||
| JP2009506880A | ||||
| JP10310437A | ||||
| JP2021031730A |
Foreign References:
| US20110283838 |
Attorney, Agent or Firm:
Patent Attorney Corporation Yamauchi Patent Office