| Abstrakt: |
The type and content of additives in the process of copper electrolysis deposition determine the quality of cathode copper. In order to obtain the cathode copper with dense crystals, smooth surface, low impurity content and qualified chemical composition, an appropriate amount of additives is usually added to improve the quality of cathode copper during the electrolysis process. The influence of the types of additives on the quality of cathode copper in the processes of copper electrolytic refining, copper electrowinning and electrolytic copper foil are reviewed. It was found that the quality of cathode copper can be effectively improved by changing the degree of cathode polarization through additives in the process of copper electrolytic refining, Common additives include gelatin, thiourea and chloride ions; In the electrowinning copper process, guer gum and thiourea are added to the electrolyte to improve the quality of the cathode copper, and cobalt sulfate is added to reduce the anode oxygen evolution potential and improve the corrosive effect. During the electrolytic copper foil process, polyethylene glycol, glue and sodium polydisulfide dipropane sulfonate are added to achieve the purpose of refining cathode copper crystal grains. On this basis, the current problems of additives in the copper deposition process and future research development trends are prospected. [ABSTRACT FROM AUTHOR] |
