在选矿联合流程中补充化学作业,可使选矿厂在机械选矿阶段生产主金属含量较低的产品成为可能,从而,在处理难选矿石时,使有用组分的回收率得到了大大地提高。在苏联,选矿设计院首次设计了上述工艺,并用于德尔纳乌兹矿床的白钨矿—钼矿石。这类矿石的物质组成十分复杂,围岩种类较多,无论是主矿带—矽卡岩—石灰岩到 Replenishment of the chemical operations in the beneficiation process can make it possible for the concentrator to produce products of lower main metal content at the mechanical beneficiation stage, thus greatly increasing the recovery of valuable components when dealing with refractory ores. In the Soviet Union, the beneficiation design institute first designed the above process and used the scheelite-molybdenum ore of the Delna Uzi deposit. The material composition of these ores is very complex, there are many types of wall rocks, whether it is the main ore belt - skarn - limestone to