Extraction of copper, zinc and cadmium from copper–cadmium-bearing slag by oxidative acid leaching process
Li Meng
Zhang Ying
Wang Xiao-Hui
Yang Jian-Guang
Qiao Shan
Zheng Shi-Li
Zhang Yi
· 2016
摘要：
Abstract: An intensified oxidative acid leaching of copper??“cadmium-bearing slag featuring using high-efficient oxygen carrier, such as activated carbon, was investigated to achieve high leaching rate of valuable metals. The effects of leaching variables, including agitation rate, sulfuric acid concentration, temperature, slag particle size, activated carbon and cupric ion concentration, were examined. It is found that leaching rates of cadmium and zinc both exceed 99 % in a very short time, but for copper, leaching rate of 99 % is achieved under the optimized leaching parameters, which are agitation rate of 100 r?·min
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