新疆某金矿选矿厂老尾矿回收金试验研究  

Experimental research on gold recovery from old tailings from the concentrator of a gold mine in Xinjiang

作　　者：李杰 翟旭东 王勇 李志军 于庆强 Li Jie;Zhai Xudong;Wang Yong;Li Zhijun;Yu Qingqiang(Changsha Institute of Mining Research Co.,Ltd.;West Gold Karamay Hatu Gold Mine Co.,Ltd.)

机构地区：[1]长沙矿山研究院有限责任公司,410012 [2]西部黄金克拉玛依哈图金矿有限责任公司

出　　处：《黄金》2021年第9期99-102,共4页Gold

摘　　要：新疆某金矿选矿厂原采用混汞-浮选-氰化工艺回收金,产生了约150万t高品位浮选老尾矿堆存。为提高资源综合利用率,进一步回收老尾矿中的金,在工艺矿物学研究基础上,确定采用再磨-浮选工艺,并对试验条件进行了优化。在老尾矿Au品位0.69 g/t,磨矿细度-0.074 mm占90%,XJ-11作为高效泥质脉石矿物抑制剂的条件下,经过一次粗选、两次精选、三次扫选闭路试验,获得了Au品位26.22 g/t、Au回收率57.26%的金精矿,取得了良好技术指标,实现了金的高效回收。A concentrator of a gold mine in Xinjiang previously used mixed mercury-flotation-cyanidation process to recover gold,generating about 1.5 million tons high-grade flotation old tailings stockpiled.In order to improve comprehensive resource utilization rate and further recover gold from old tailings,based on process mineralogical study,the regrinding-flotation process was determined and the test conditions were optimized.When the Au grade of old tailings is 0.69 g/t,the grinding fineness of-0.074 mm accounts for 90%and XJ-11 is used as efficient slimy gangue mineral inhibitor,the closed-circuit test of once roughing,twice cleaning and three times scavenging obtains the gold concentrate with Au grade 26.22 g/t and Au recovery rate 57.26%,indicating good technical indexes and achieving efficient recovery of gold.

关 键 词：老尾矿 再磨 浮选 XJ-11抑制剂 回收率 

分 类 号：TD926.42[矿业工程—选矿]