Due to the copper oxidation rate of 20. 16%,the low recovery is obtained by the conventional flotation processing of a silver-bearing copper ore in Inner Mongolia. In view of this situation,the principle of preferential flotation of copper sulfide minerals followed by flotation of copper oxide minerals is adopted. The combined collector of butyl xanthate and Z200 with a mass ratio of 3∶1 is used for copper sulfide mineral collector,Na2 S is used for copper oxide minerals regulator,and the mixture of butyl x...