The daily production of pyrite cinder washing solution is substantial and contains valuable elements such as gold and copper,demonstrating significant comprehensive recycling value.To recover these precious ele-ments from the acid pyrite cinder washing solution,a combined process of copper sulfide precipitation and micro-porous gold interception was employed.By conducting experiments and comparing the effects of different pH val-ues,Na2 S addition amounts,and precipitation times on the recovery of Cu2+and Au,the optimal conditions for sulfide precipitation were determined.The combined process test was carried out under the following conditions:washing solution pH of 4.5,Na2 S addition amount of 439.5 mg/L,precipitation time of 10 minutes,and a filter cloth with a pore size of 2 μm.Following the combined experiment,the Cu2+recovery rate was 99.84％,and the total Au recovery rate reached 96.36％,achieving efficient recovery of copper and gold elements from the wash-ing solution.This approach not only contributes to energy conservation and environmental protection but also holds substantial potential economic benefits.
NETL
NSTL
维普
万方数据
