提高含砷锑微细粒金矿选矿回收率的生产实践  

High-efficiency Recovery Production Practice of As-Sb-Bearing Refractory Gold Ore

作　　者：桑胜华 

机构地区：[1]招金矿业股份有限公司,山东招远265400

出　　处：《有色金属（选矿部分）》2017年第4期48-51,共4页Nonferrous Metals（Mineral Processing Section）

基　　金："十二五"国家科技支撑(2012BAB08B04)

摘　　要：甘肃某含砷锑微细粒浸染型金矿石原有的选矿工艺流程为单一浮选,选矿回收率仅65.21%。生产实践中,通过增加重选,有效地回收了矿石中的颗粒金矿物,重选回收率5.81%;在磨矿分级回路中增加了闪速浮选,有效避免了部分有用矿物的过磨,回收率达到7.06%;磨浮系统改为阶段磨矿阶段选别,浮选回收率达到68.13%;浮选尾矿通过环保提金剂浸出,尾矿浸出回收率达到6.78%。通过上述改造,联合选矿工艺流程选矿回收率达到了87.78%,较改造前提高了22.57个百分点,较大程度地提高了资源利用率,经济效益显著。The original mineral processing flowsheet of a kind of arsenic antimony fine disseminated gold deposit in Gansu is a single flotation process, the mineral processing recovery is only 65.21%. In practice, the particles of gold minerals in ores are recoveried effectively by gravity separation, and the gravity recovery rate was 5.81%. We added the flash flotation in grinding-classification circuit and the overgrinding of minerals is avoided effectively, and the recovery rate reached 7.06%. The flotation system was changed to the stage-grinding and stage- seperation,and the recovery rate was 68.13%. Flotation tailings are leached by environmental protection agent gold leaching, and the leaching railings recovery rate reached 6. 78%. Through the above transformation, the recovery rate of the mineral processing flowsheet was 87.78%, which was increased by a factor of up to 22. 57 percentage points compared with that before the transformation. The utilization rate of resources is improved greatly, and the significant economic benefits markedly.

关 键 词：难处理金矿 选矿 联合工艺 

分 类 号：TD953[矿业工程—选矿] TD923