某铜湿法厂工艺改进试验研究

摘要

In order to reduce the influence of iron on the electrowinning process, the extraction performance of ZJ988 and the solution behavior in each extraction steps were studied for one hydrometallurgical processing plant. Results showed that the lower the extractant concentration, the lower the extraction rate of iron. The reduction in copper transfer rate due to the lower extractant concentration can be compensated by increasing reverse extraction acidity. Meanwhile, washing process with acidity of 10 g/L, copper concentration over 1.0 g/L, iron concentration less than 2.0 g/L, phase ratio at 0.8～1.0 could lead to a better result.%为了降低铁对电积过程的影响,对某铜湿法厂萃取各工序溶液性质及萃取剂ZJ988的萃取性能进行了研究,结果表明,降低萃取剂浓度可以减少铁的萃取量,而由于萃取剂浓度降低造成的铜传递量的减小可以通过提高反萃酸度来弥补;当洗涤参数为酸度10 g/L、铜浓度1.0 g/L以上、铁浓度小于2.0 g/L、相比0.8～1.0时,铁洗涤效果较好.