由于矿物浸染粒度较细及复合矿石中细粒矿物的嵌生,使得重有色金属矿石趋于贫化,因此有必要积极地寻找选别这类矿石的有效方法。除了包括浮选和冶金工艺的联合流程外,对提高选矿机作业的效率也进行了一些研究。为了提高送入浮选的矿石中的原矿品位,合理地采用了预先富集的方法。但是,采 Due to the fine grain size of the minerals and the intergrowing of the fine-grained minerals in the composite ores, heavy non-ferrous metal ores tend to be depleted. Therefore, it is necessary to actively look for effective methods of sorting these ores. In addition to a joint process that includes flotation and metallurgical processes, a number of studies have been conducted to improve the efficiency of concentrator operations. In order to increase the grade of ore fed to the flotation ore, a pre-enrichment method is reasonably employed. However, mining