含金银磁铁粗精矿精选中矿浸出—再磁选回收金银铁  

Comprehensive recovery of gold and silver and magnetite from ferromagnetic selected ore by leaching and remagnetic separation

作　　者：段胜红 周光浪 代生权 DUAN Shen-ghong;ZHOU Guang-lang;DAI Sheng-quan(Yunnan Gold Mining Group Co.Ltd.,Kunming 650200,China)

机构地区：[1]云南黄金矿业集团股份有限公司,昆明650200

出　　处：《矿冶》2020年第5期108-112,共5页Mining And Metallurgy

基　　金：云南省对外科技合作计划—省院省校科技合作项目(2015IB002)。

摘　　要：云南某含金银多金属矿选矿厂磁选分选出的中矿(磁铁矿连生体)除了含磁铁矿外,还含有金0.87g/t、银6.69g/t等有价金属,具有较高回收价值。将中矿磨至-0.043mm占90%,采用低毒提金剂"金蝉"提取金银,用圆筒磁选机回收磁铁矿,在最佳工艺条件下,获得了磁铁精矿铁品位62.00%、回收率78.18%,贵液中金回收率83.72%、银回收率63.08%的较好指标。In addition to magnetite,the middlings(magnetite intergrowth)separated by magnetic separation from a gold and silver bearing polymetallic ore concentrator in Yunnan also contain 0.87 g/t gold and 6.69 g/t silver,which have high recovery value.The middlings were ground to-0.043 mm accounting for 90%.Gold and silver were extracted by low toxic gold extractant“Jinchan”,and magnetite was recovered by cylindrical magnetic separator.Under the optimal process conditions,the iron grade of magnetite concentrate was 62.00%,the recovery rate of gold was 78.18%,the recovery rate of gold from precious liquid was 83.72%,and the recovery rate of silver was 63.08%.

关 键 词：磁铁矿连生体 低毒提金剂“金蝉” 浸出—再磁选 

分 类 号：TD951[矿业工程—选矿] TD953