难浸银精矿在[Bmim]HSO_4——硫脲体系中的浸出  

Leaching of a Refractory Silver Concentrate in [Bmim]HSO_4——Thiourea System

作　　者：张村[1] 方夕辉[1,2] 夏艳圆 张帅[1] 曾怀远 

机构地区：[1]江西理工大学资源与环境工程学院,江西赣州341000 [2]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4期38-40,47,共4页Nonferrous Metals Engineering

基　　金：江西省科技支撑计划项目(20111BBG70002-2)

摘　　要：研究了某浮选银精矿在"[Bmim]HSO4—硫脲"和"H2SO4—硫脲"两种浸取体系中银的浸出行为。研究了矿浆p H值、Fe3+浓度、硫脲浓度、浸出时间等工艺参数对浸出的影响。结果表明,[Bmim]HSO4代替H2SO4作为p H调整剂,可在酸性较弱的矿浆p H值,较少的Fe3+用量、较低的硫脲浓度条件下提高银浸出率9.80个百分点。Leaching behaviors of a flotation silver concentrate in H2SO4--thiourea system were studied. The effects of pH value, [ Bmim ] HSO4--thiourea and Fe3＋ concentration, thiourea concentration and leaching time on silver leaching were studied. The results indicate that the leaching rate in the [ Bmim] HSO4--thiourea leaching system is 9.80% higher than that in the H2SO4--thiourea leaching system under the conditions of weak acidic pulp pH value,less dosage of Fe3＋ and low initial concentration of thiourea.

关 键 词：浮选银精矿 [Bmim]HSO4 硫酸 硫脲 离子液体 

分 类 号：TF832[冶金工程—有色金属冶金]