Title:
ニッケル水溶液の製造方法
Document Type and Number:
Japanese Patent JP7389338
Kind Code:
B2
Abstract:
To provide a manufacturing method of nickel aqueous solution capable of reducing a nickel loss while efficiently removing iron.SOLUTION: A manufacturing method of nickel aqueous solution includes: an iron removing process of removing iron included in coarse nickel aqueous solution as a precipitate by an oxidation neutralization reaction; an exchange stage of making nickel contact with an acidic extraction agent supporting iron-removal final solution after the iron removing process to substitute the iron in the iron-removal final solution with the nickel in the acidic extraction agent so as to obtain high purity nickel aqueous solution; and a back extraction stage of making the acidic extraction agent contact with back extraction solution after the exchange stage to back-extract the iron supported by the acidic extraction agent. In the iron removing process, the coarse nickel aqueous solution is prepared to have a pH of 4.0 to 5.2, inclusive. In the back extraction stage, the back extraction solution is prepared to have a normality of the acid of 1.6 N or higher.SELECTED DRAWING: Figure 1
Inventors:
Yusuke Watanabe
Tomohiko Yokokawa
Keisuke Shibayama
Tomohiko Yokokawa
Keisuke Shibayama
Application Number:
JP2019226507A
Publication Date:
November 30, 2023
Filing Date:
December 16, 2019
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C22B23/00; C01G53/10; C22B3/26; C22B3/44
Domestic Patent References:
| JP2018177547A | ||||
| JP10310437A | ||||
| JP11229056A | ||||
| JP2017008385A | ||||
| JP2017025367A | ||||
| JP2013181247A | ||||
| JP3162529A | ||||
| JP59110740A |
Attorney, Agent or Firm:
Patent Attorney Corporation Yamauchi Patent Office