盐酸体系中二氧化锰浸出方铅矿的研究  

Leaching of galena by manganese dioxide in hydrochloric acid solution

作　　者：湛雪辉[1] 李朝辉[1] 湛含辉[2] 李飞[1] 曹芬[1] 李侠[1] 周随安[1] 

机构地区：[1]长沙理工大学化学与生物工程学院,湖南长沙410076 [2]中国矿业大学环境与测绘学院,江苏徐州221116

出　　处：《中南大学学报（自然科学版）》2012年第6期2084-2088,共5页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(50774016);湖南省科技计划项目(2010NK3001;2011CK3069)

摘　　要：在盐酸溶液中,用二氧化锰浸出方铅矿精矿制备氯化铅,并考察操作参数对铅浸出率的影响。研究结果表明盐酸体系中二氧化锰浸出方铅矿的最佳操作条件如下:搅拌速率为500 r/min,反应体系中总液体与总固体质量比为10,二氧化锰与方铅矿精矿质量比为1.3,反应时间为60 min,反应温度为80℃,盐酸浓度为3 mol/L,氯化钠质量浓度为250 g/L;在此最佳操作条件下,方铅矿精矿中的铅浸出率在99.5%以上,氯化铅产物纯度在99.6%以上。The lead chloride was prepared by using manganese dioxide leaching galena concentrate in the hydrochloric acid solution.The influence of all kinds of operation parameters on the leaching rate of lead was studied.The experimental results show that the optimum parameters are as follows： stirring rate is 500 r/min,the mass ratio of total liquid to the total solid of the reaction system is 10,the mass ratio of manganese dioxide and galena concentrate is 1.3,the reaction time is 60 min,the reaction temperature is 80 ℃,the hydrochloric acid concentration is 3 mol/L,and the sodium chloride mass concentration is 250 g/L.Under the optimum experimental conditions,the leaching rate of lead can reach above 99.6% and the product purity of lead chloride can reach above 99.6%.

关 键 词：方铅矿 二氧化锰 氯化铅 浸出率 

分 类 号：TF813[冶金工程—有色金属冶金]