Research on purity control on high-purity copper by electrorefining

High purity copper is widely used because of its excellent properties, but the method of preparing high purity copper needs to be solved urgently. In this paper, the electrolyte flow characteristics between the anode and cathode, as well as the effect of wrapping filter cloth on the purity improvement of cathode copper were studied through simulation and copper electrolytic refining experiments, respectively. The results showed that the electrolyte between the cathode and anode plates presented the flow state of "circulating vortex"; the method of covering the filter cloth on the cathode plate could significantly improve the purity of copper cathode, and the smaller aperture of the filter cloth, the lower the content of impurity elements in the copper cathode; by wrapping the filter cloth on the cathode plate in the process of copper electrolytic refining, the high purity copper (5N) could be obtained.