Simulated solution condition experiment and process design for copper deep removal from nickel anodes based on ion-exchange

Removing copper from nickel electrolysis anode solution has been a major keypoint in the nickel metallurgy industry. In this study, we proposed a novel process flow to promote removing copper from nickel electrolysis anode solution. A simulated nickel anode solution was designed, and static and dynamic adsorption experiments were conducted to determine the best of solution pH, adsorption time and temperature, resin dosage and particle size, and stirring speed. The optimal conditions were explored for copper removal from nickel electrolysis anode solution. Based on the optimal experimental conditions and the relevant experimental data, a novel process for copper removal from nickel electrolysis anodes was designed and obtained. This novel process of copper removal from nickel electrolysis anodes was confirmed with nickel anolyte solution with nickel 50–60 g/L and copper 0.5 g/L. After finishing the novel process of copper removal, the nickel in the purified nickel anolyte became undetectable and copper concentration was 3 mg/L, the novel process of resin adsorption to remove copper from nickel anode solution through static and dynamic adsorptions has an efficacious copper removal. It is a beneficial supplement to traditional methods.