Title:
脱銅電解処理方法、脱銅電解処理装置
Document Type and Number:
Japanese Patent JP7022331
Kind Code:
B2
Abstract:
To provide a method for preventing generation of problems such as short circuit or reduction of operation efficiency, due to abnormal growth of copper grains while maintaining high current efficiency.SOLUTION: There is provided a copper removal electrolytic treatment method in a process for manufacturing electric nickel from a copper-containing nickel chloride solution obtained by conducting a chlorine exudation treatment on nickel sulfide, the manufacturing process of electric nickel includes a cementation process having a process for a first process for adding the nickel sulfide to the copper-containing nickel chloride solution to reduce Cuto Cuin the copper-containing nickel chloride solution, and a second process for adding nickel mat and chlorine exudation residue to a resulting slurry to stabilizing Cuas a sulfide. In the copper removal electrolytic treatment, a reaction termination liquid obtained in the first process in the cementation process is supplied to an electrolytic tank having an anode constituted by a metal containing titanium, and having Ra of a surface where copper is deposited of 0.2 o 1.2 μm and Rz of 1.2 to 6.0 μm, and a cathode as an initiation liquid.SELECTED DRAWING: Figure 6
Inventors:
Takafumi Wakamatsu
Yudai Tanaka
Shuichi Date
Hideaki Sato
Takao Oishi
Yudai Tanaka
Shuichi Date
Hideaki Sato
Takao Oishi
Application Number:
JP2018067228A
Publication Date:
February 18, 2022
Filing Date:
March 30, 2018
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C25C1/08; C22B3/44; C22B3/46; C22B15/00; C22B23/00; C22B23/06; C25C1/12; C25C7/06
Domestic Patent References:
| JP6346269A | ||||
| JP3180482A | ||||
| JP2012026027A | ||||
| JP2001262389A | ||||
| JP11080986A |
Foreign References:
| WO2011162254A1 |
Attorney, Agent or Firm:
Masayuki Masabayashi
Hayashi Kazuyoshi
Hayashi Kazuyoshi