河南某金尾矿回收金试验研究  

Experimental Study on Gold Recovery from a Gold Tailings in He'nan

作　　者：常富强 梁献振 李杰 CHNANG FuQiang;LIANG XianZhen;LI Jie(China Molybdenum Co.,Ltd;Changsha Institute of Mining Research Co.,Ltd)

机构地区：[1]洛阳栾川钼业集团股份有限公司,河南省洛阳市471500 [2]长沙矿山研究院有限责任公司

出　　处：《现代矿业》2021年第9期9-11,40,共4页Modern Mining

摘　　要：河南某金矿为进一步回收尾矿库尾矿中的金,实现资源的综合利用和经济效益最大化,在尾矿矿石性质研究的基础上,探索制定了尾矿再磨—浮选—尾矿细磨—非氰浸出选冶联合回收金工艺。经过探索试验和条件优化试验,在-0.074 mm85%的磨矿细度下,浮选闭路试验获得了金品位38.77 g/t、金回收率44.97%的金精矿;浮选尾矿细磨至-0.037 mm90%,使用硫代硫酸盐法和“金蝉”试剂的浸出率分别为25.88%和30.59%,最终金的总回收率为75.56%,取得了较好的技术指标。In order to further recover gold from tailings of tailings pond in a gold mine in Henan province,and realize comprehensive utilization of resources and maximize economic benefit.explored and developed a combined gold recovery process of tailings regrinding-flotation-fine grinding-non-cyanide leaching beneficiation and metallurgy on the basis of the study on the properties of tailings ore.Through exploration test and condition optimization test,a gold concentrate with gold grade of 38.77 g/t and gold recovery of 44.97%was obtained by closed-circuit flotation test at grinding fineness of 85%of-0.074mm.The flotation tailings were finely ground to 90%of-0.037mm,the leaching rates of thionsulfate method and"Jinchan"reagent were 25.88%and 30.59%,respectively,and the total recovery of gold was 75.56%,which obtained good technical indexes.

关 键 词：金尾矿 再磨再选 选冶联合 非氰浸出 

分 类 号：TD926.4[矿业工程—选矿]