Sustainable Mining and Metallurgy

In this paper, the low copper reduction leaching solution with copper content of 0.52g/L was used as raw material, and iron powder was used to carry out copper and arsenic precipitation experiments. The effects of iron powder coefficient, reaction time, reaction temperature and copper arsenic ratio on copper and arsenic precipitation were investigated. The results show that the addition coefficient of iron powder is the main factor affecting the effect of copper precipitation and arsenic precipitation. The ratio of copper to arsenic has a great influence on the removal of arsenic, and the reaction time and reaction temperature have little effect on the effect of copper precipitation and arsenic precipitation. When the iron powder coefficient reaches 1.8, the reaction temperature is maintained above 70℃, the reaction time is 1h, and the ratio of copper to arsenic is 2.36, the copper deposition rate and arsenic deposition rate are 82.69% and 72.73%, respectively. The copper content in the liquid after copper deposition is 0.09g/L, and the arsenic content is 0.06g/L.