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一、问题提出众所周知,目前国内各矿山对硫化铅锌矿石的浮选做了大量工作,而且积累了丰富的经验。可是对细级别氧化矿,特别被抑制,被污染后的细级别矿物再回收尚存在一定困难。笔者通过对锦西市选矿厂处理的杨郊矿石研究和生产实践认为:受氰化物抑制后细级别的闪锌矿不易重新活化,采用适宜的磨矿细度及合理工艺,用亚硫酸钠代替氰化物做抑制剂,不仅降低生产成本,利于环境保护,而且改善了锌银矿物的可浮性,选矿指标大幅度提高,为企业创造了较好的经济效益。
First, the problem put forward As we all know, at present all the mines lead-zinc sulfide flotation done a lot of work, but also accumulated rich experience. However, the fine level of oxide ore, in particular, was inhibited, after the fine pollution of the mineral recovery there are still some difficulties. Through the research and production practice of Yangjiao Ore processed by Jinxi Concentrator, the author thinks that the fine grade sphalerite is not easy to be reactivated after its inhibition by cyanide, the suitable grinding fineness and reasonable process, the replacement of cyanide by sodium sulfite As an inhibitor, not only reduce production costs and environmental protection, but also improve the floatability of zinc and silver minerals, beneficiation indicators increased substantially for the enterprise to create a better economic benefits.