湿法处理氧化铋渣分离铋的研究  

Study on Bismuth Separation from Bismuth Oxide Slag by Hydrometallurgical Process

作　　者：杜新玲[1] 马科友[1] 葛道健 

机构地区：[1]济源职业技术学院,河南济源459000

出　　处：《有色金属（冶炼部分）》2016年第6期26-30,共5页Nonferrous Metals（Extractive Metallurgy)

基　　金：济源市科技局科技攻关项目(10032013)

摘　　要：采用氯化浸出—水解沉锑—中和沉铋工艺流程从火法处理铜铅阳极泥过程中产出的氧化铋渣中分离铋。研究了终酸浓度、浸出时间、浸出液固比、浸出温度等对铋浸出率的影响;水解方式、pH和水解时间对锑水解率的影响;以及pH、中和时间对铋沉淀率的影响。在适当的工艺条件下,铋浸出率可以达到95.25%,锑水解率可达83.77%,铋沉淀率可达99%以上,同时可以回收锑、铜等有价金属。Bismuth was separated from bismuth oxide slag which is produced from treatment of copper/lead anode slimes by pyrometallurgical process,with chlorination leaching,antimony hydrolysis precipitation,and bismuth neutralization precipitation.The effects of final acid concentration,leaching time,L/S and leaching temperature on bismuth leaching rate were investigated.The effects of hydrolysis method,pH value,and hydrolysis time on antimony hydrolysis rate,as well as those of pH value and neutralization time on bismuth precipitation rate were investigated.Under optimum conditions,bismuth leaching rate is95.25%,antimony hydrolysis rate is 83.77%,and bismuth precipitation rate is 99% above,while antimony and copper can be effectively recovered during bismuth extraction.

关 键 词：氧化铋渣 氯化浸出 水解沉锑 中和沉铋 

分 类 号：TF817[冶金工程—有色金属冶金]