某矽卡岩型铜硫矿资源综合回收工艺

Comprehensive Recovery Process of Skarn TypeCopper-sulfur Ore Resources

这是一篇矿物加工工程领域的论文。针对某矽卡岩性铜矿石嵌布粒度较细及有价元素种类多,分别为铜、硫、铁和伴生元素银的特点。比较了铜优先浮选、铜硫混合浮选-铜硫分离两种工艺对资源综合回收的影响,其中铜硫混浮-铜硫分离工艺可以实现铜、硫、银的较好回收,同时磁铁矿有一定回收价值。实验可以得到铜品位24.39%、铜回收率91.68%的铜精矿,硫品位33.10%、硫回收率61.19%的硫精矿。银在铜精矿中得到了富集,银品位185 g/t、银回收率83.21%。浮选尾矿经再磨后磁选可以增加铁精矿回收率,经过两段弱磁选可以得到铁品位56.48%,铁回收率33.84%的铁精矿,该工艺可为同类型矿石选矿提供意见参考。

This is an article in the field of mineral processing engineering.For a skarn copper ore,the disseminated particle size is fine,the valuable elements in the ore are Cu,S,Fe and the associated element Ag.Compared with the effects of copper preferential flotation and copper-sulfur mixed flotation-coppersulfur separation on the comprehensive recovery,the copper-sulfur mixed flotation-copper-sulfur separation process can achieve better recovery of copper,sulfur and silver,and magnetite has a certain recovery value.Copper concentrate with copper grade of 24.39%and copper recovery of 91.68%and sulfur concentrate with sulfur grade of 33.10%and sulfur recovery of 61.19%were obtained by copper sulfur mixed flotation.Ag was enriched in the copper concentrate,with a grade of 185 g/t and Ag recovery of 83.21%.The recovery of iron concentrate can be increased after the regrinding magnetic separation of flotation tailings.With twostage weak magnetic separation,iron concentrate with iron grade of 56.48%and iron recovery of 33.84%can be obtained.The results can provide a reference for the similar copper sulfide.