某伴生银镉铟高硫铜锌矿低碱度选矿试验研究  

Research on low-alkalinity beneficiation for a high sulfur copper-zinc ore associated silver-cadmium-indium

作　　者：葛阳阳 张凯熙 田江涛 孟建卫 王素 危刚 路峰 GE Yangyang;ZHANG Kaixi;TIAN Jiangtao;MENG Jianwei;WANG Su;WEI Gang;LU Feng(Hebei Research Center for Geoanalysis,Baoding 071052,China;Hebei Key Laboratory of Mineral Resources and Ecological Environment Monitoring,Baoding 071052,China)

机构地区：[1]河北省地质实验测试中心,河北保定071052 [2]河北省矿产资源与生态环境监测重点实验室,河北保定071052

出　　处：《中国矿业》2024年第8期201-208,共8页China Mining Magazine

基　　金：保定市科技计划项目资助(编号:2141ZF324)。

摘　　要：针对某含铜1.13%、锌1.98%、硫17.85%、银71 g/t、镉90 g/t、铟21 g/t,目的矿物主要为黄铜矿、闪锌矿、黄铁矿的高硫铜锌矿,进行了组合抑制剂低碱度浮选回收黄铜矿、闪锌矿和重选回收黄铁矿试验。试验结果表明:在磨矿细度−0.074 mm占90%条件下,铜浮选作业采用氧化钙+硫化钠抑制黄铁矿、硫酸锌+焦亚硫酸钠抑制锌矿物,锌浮选作业采用腐殖酸钠+氧化钙抑制黄铁矿,获得铜品位23.59%、铜回收率92.85%,含银、镉、铟分别为328 g/t、228 g/t、142 g/t的铜精矿;锌品位45.81%、锌回收率80.60%,含银、镉、铟分别为796 g/t、2000 g/t、287 g/t的锌精矿;摇床试验获得硫品位42.34%、作业回收率68.04%的硫精矿;黄铁矿组合抑制剂发挥协同作用减少了氧化钙用量,浮选pH值降至10以下。研究成果为该类型矿石的工业开发奠定了基础。A low-alkalinity beneficiation is studied on a high sulfur copper-zinc ore containing 1.13%copper,1.98%zinc,17.85%sulfur,71 g/t silver,90 g/t cadmium and 21 g/t indium,which the main target minerals are chalcopyrite,sphalerite and pyrite.A gravity concentration is carried out.The results show that at the grinding fineness of−0.074 mm 90%,copper flotation operation using CaO+NaS_(2) to inhibit pyrite,taking ZnSO_(4)+Na_(2)S_(2)O_(5) as zinc minerals’inhibitors,and zinc flotation operation using C9H8Na_(2)O_(4)+CaO to inhibit pyrite.The copper concentrate with 23.59%of Cu grade and 92.85%of Cu recovery rate,which containing 328 g/t Ag,228 g/t Cd,and 142 g/t In.The zinc concentrate with 45.81%of Zn grade and 80.60%of Zn recovery rate,which containing 796 g/t Ag,2000 g/t Cd,and 287 g/t In.The shaking table test obtains sulfur concentrate with a sulfur grade of 42.34%and an operational recovery rate of 68.04%.The synergistic effect of pyrite combination inhibitors reduce the CaO dosage,and the flotation pH value drops below 10.The research results lay a good foundation for the industrial development of this ore.

关 键 词：低碱度 高硫 组合药剂 铜锌矿 

分 类 号：TD952[矿业工程—选矿]