铜精矿湿法除砷试验研究

研究了铜精矿湿法除砷、除砷浸出液循环利用和浸出液固砷。结果表明:采用湿法工艺可以较好地脱除铜精矿中的砷,砷脱除率达97.51%;只要浸出液中S2-浓度保持足够高,除砷浸出液循环利用就不影响砷的脱除,浸出渣中的砷质量分数可降低到0.50%以下,但是硫化钠耗量较大;除砷浸出液采用常压氧化—铁盐固砷工艺,固砷率为30.80%。

Research on Removing of Arsenic From Copper Concentrate by Hydrometallurgical Process

Removing of arsenic from copper concentrate by hydrometallurgical process,recycling and arsenic stabilization of leaching solution has been carried out.Results show that the hydrometallurgical process is a effective method to remove arsenic from copper concentrate,the arsenic removal rate reachs 97.51%.As long as sodium sulfide in leaching solution is sufficient,the arsenic removal rate will not decrease when recycling the leaching solution.The arsenic content in residue remains below 0.50%,but the consumption of sodium sulfide is large.The arsenic stabilization rate of atmospheric oxidation technology is 30.80%.