电解净液工艺处理铜阳极泥浸出液的生产实践及优化

Production practice and optimization of electrolytic purification process for copper anode slime

金隆铜业有限公司技改前采用旋流电积系统处理铜阳极泥浸出液,因旋流电积系统设计能力受限,仅能处理少量杂质含量低的二段浸出液,大部分浸出液外售处理,每年损失1086万元。公司决定进行改造,有两种处理方案:一是继续现有旋流电积工艺并扩大产能;二是通过电解净液工艺处理。经过效益对比,发现采用电解净液工艺处理更为经济。公司确定电解净液工艺处理的方案后,又对独立系统处理浸出液和浸出液与废电解液混合后处理两种方式进行了比较,发现浸出液与废电解液混合处理方法较优,该方法处理后的产品成分较为稳定,能够满足标准铜的生产。生产实践表明,此方案的应用减少了成本和场地等投入,并且处理能力得到了提升,还提高了金属回收率,减少了环保隐患,为铜冶炼行业处理同类浸出液提供了参考方案。

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.