江西某伴生银难选铅锌矿浮选分离  

Flotation Separation of a Lead-zinc Ore with Associated Silver from Jiangxi

作　　者：余新阳[1] 王浩林[1] 王强强[1] 魏新安[1] 

机构地区：[1]江西理工大学江西省矿业工程重点实验室,江西赣州341000

出　　处：《有色金属工程》2016年第5期49-54,共6页Nonferrous Metals Engineering

基　　金：国家自然科学基金资助(51304085)

摘　　要：针对江西某伴生银的复杂铅锌矿分离困难的特点,分析了原矿矿物组成、有价组分种类、矿石结构构造及赋存状态,并在此基础上制订了选矿试验原则流程,进行了铅锌选矿试验研究。以丁基铵黑药和乙硫氮为捕收剂,石灰和碳酸钠为黄铁矿和磁黄铁矿抑制剂,硫酸锌与亚硫酸钠为锌矿物组合抑制剂优先浮选铅矿物;铅浮选尾矿经石灰调浆、硫酸铜活化后,以丁基黄药为捕收剂进行锌浮选。实验室小型闭路试验获得了铅精矿铅品位50.21%、铅回收率88.78%,锌精矿锌品位46.82%、锌回收率74.30%,铅精矿中银回收率为68.60%的选矿指标。Aiming at the difficulties in separating lead from zinc of a lead-zinc ore associated silver from Jiangxi Province,the mineral compositions,valuable component types,ore structure and occurrence states were investigated. Based on these,the principle flow was formulated; the experiment on mineral process was carried out. The lead minerals were successfully separated from zinc minerals under the conditions of using lime and sodium carbonate to restrain pyrite and pyrrhotite,using sodium sulfite and zinc sulfate as the depressant for zinc minerals,and using butylamine aerofloat and diethyl dithiocarbamate as the collectors of lead minerals. Then,zinc was floated from the tailings of floating lead by using lime as the regulator of the pulp alkalinity,copper sulfate as the activator of zinc minerals,butyl xanthate as the collector. In the experiments of the closed-circuit flow,the lead concentrate with the lead grade of50. 21% and recovery of 88. 78% were obtained,as well as the zinc concentrate with zinc grade of46. 82% and recovery of 74. 30%. The silver recovery in the lead concentrate was 68. 60%.

关 键 词：伴生银铅锌矿 铅锌分离 优先浮选 综合回收 

分 类 号：TD952[矿业工程—选矿] TD923