Title:
高純度硫酸コバルト溶液の製造方法及び、硫酸コバルトの製造方法
Document Type and Number:
Japanese Patent JP7365846
Kind Code:
B2
Abstract:
The present invention is a method for producing, from a cobalt sulfate solution including nickel ions, a high-purity cobalt sulfate solution having a higher purity level of cobalt compared to the aforementioned cobalt sulfate solution. The cobalt/nickel concentration ratio of the cobalt sulfate solution is 100 or greater. This method includes a nickel separation step in which: the cobalt sulfate solution is brought into contact with a solvent containing a bis(2,4,4-trimethylpentyl)phosphinic acid so as to adjust pH; with nickel ions included in the cobalt sulfate solution left in the liquid, cobalt ions are extracted into the solvent; and subsequently, the cobalt ions that have been extracted into the solvent are back-extracted with a sulfuric acid.
Inventors:
Hiroiki Ariyoshi
Isao Tomita
Isao Tomita
Application Number:
JP2019189658A
Publication Date:
October 20, 2023
Filing Date:
October 16, 2019
Export Citation:
Assignee:
JX Nippon Mining & Metals Co., Ltd.
International Classes:
C01G51/10; B01D11/04; C01G53/10; C22B1/02; C22B3/38; C22B3/44; C22B7/00; C22B23/00; H01M10/54
Domestic Patent References:
| JP2016060926A | ||||
| JP2016180129A | ||||
| JP2014029006A | ||||
| JP2016186118A | ||||
| JP2013512345A | ||||
| JP2007515552A |
Foreign References:
| WO2013099551A1 |
Other References:
KANG Jingu et al.,Hydrometallurgy,2010年,vol.100,p.168-170
Attorney, Agent or Firm:
Axis International Patent Attorney Corporation
Previous Patent: Learning devices, learning methods, and programs
Next Patent: Composite material with reinforced fiber bundles and bolted structure
Next Patent: Composite material with reinforced fiber bundles and bolted structure