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时乌拉尔铜-锌-黄铁矿矿石所采用的一些浮选流程,多半都是在选矿过程的末段分出黄铁矿。其实,先分出这种主要金属矿物(它在所研究的原料中占10-80%)是比较合理的,因为黄铁矿颗粒在磨矿细度较粗的条件下就被解离。在某些工艺流程中,一开始就把黄铁矿除去,因为即使采用强碱介质抑制它,也不十分有效。同时,黄铁矿残留的浮游活性也极为重要,会使铜和锌回路的操作复杂化。我们已研究出一些加强抑制硫化铁的方法,从而可以提出处理含黄铁矿矿石的合理流程方案。
Some of the flotation processes used in the Ural copper-zinc-pyrite ores are mostly pyrite separation at the end of the beneficiation process. In fact, it is reasonable to first separate the major metalloids, which make up 10-80% of the raw materials studied, because the pyrite particles are dissociated when they are coarsely ground. In some processes, the pyrite is removed from the beginning because it is not very effective even with strong alkaline media. At the same time, the residual activity of pyrite remains extremely important and complicates the operation of copper and zinc circuits. We have developed some methods to enhance the inhibition of iron sulfide so that we can propose a reasonable process scheme for treating pyrite-containing ores.