China Nonferrous Metallurgy

Before the technological transformation，Jinlong Copper Co., Ltd. used the cyclone electrowinning system to treat the copper anode slime leaching solution. Due to the limited design capacity of the cyclone electrowinning system, only a small amount of the secondary leaching solution with low impurity content was processed, and most of the leaching solution was sold. The annual loss is 10.86 million yuan. The company decided to carry out the transformation, there are two treatment options. One is to continue the existing cyclone electrowinning process and expand the production capacity; the other is to deal by the electrolytic purification process. After benefit comparison, it is found that it is more economical to use electrolytic purification process. After the company determined the treatment plan, the two methods of independent system treatment of leachate and mixed leachate and waste electrolyte were compared, and found that the mixed treatment method of leachate and waste electrolyte is better, and the product composition is relatively stable and can meet the production of standard copper. Production practice shows that the application of this program reduces costs and investment, and improves processing capacity. It also increases metal recovery rate and reduces environmental hazards. It provides a reference solution for the copper smelting industry to process similar leaching solution.