COPPER REMOVAL ELECTROLYTIC TREATMENT METHOD, COPPER REMOVAL ELECTROLYTIC TREATMENT DEVICE

摘要

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