文章介绍了铜-锌矿石混合浮选前矿浆颗粒组成最佳化的研究结果。指出分离出混合浮选给矿中的粗粒级并进行再磨可以降低铜,锌和硫随尾矿的损失,可以提高这些金属在同名精矿中的回收率。对粗粒组分分离和再磨后,有价组分在尾矿中的损失变化特征作了分析。介绍了作者提出的工艺流程, This paper presents the results of the study on the optimum composition of the slurry before the copper-zinc ore flotation. It is pointed out that the separation of coarse flotation from mixed flotation and subsequent regrinding can reduce the loss of copper, zinc and sulfur with the tailings and improve the recoveries of these metals in the concentrate of the same name. After separating and regrinding the coarse fraction, the characteristics of the loss of the valuable fraction in the tailings are analyzed. Introduced the process proposed by the author,