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中南矿冶学院最近受湖南省石油化工局委托,对湖南七宝山硫铁矿具有代表性的复杂硫化矿进行了试验研究。最近成功地提出了无氰分选的半工业试验流程,其成果业已通过鉴定。七宝山矿体主要为含铜锌黄铁矿矿床,经历了热液的多次迭加成矿作用和氧化淋滤等次生改造作用,地质条件十分复杂。加上开采悠久,老窿纵横,矿石受到强烈氧化蚀变作用,含有大量可溶性盐类,洗矿水呈酸性,矿石性质错综复杂,同种矿物的相对可浮性相差悬殊,
Zhongnan Mining and Metallurgical Institute recently commissioned by the Hunan Provincial Bureau of Petrochemical Industry, conducted a pilot study on the representative complex sulfide ores in Qibao Mountain, Hunan Province. A semi-industrial pilot process for cyanide-free separation has recently been successfully proposed and the results have been identified. The ore body of Qibao Mountain is mainly copper-zinc-zinc pyrite deposit. It has undergone multiple secondary mineralization and oxidative leaching. The geological conditions are very complicated. Coupled with long-term mining, vertical and horizontal aspect, the ore by a strong oxidative alteration, containing a large number of soluble salts, washing water was acidic, complex nature of the ore, the same kind of mineral relative floatability,