摘要
考察常压条件下硫酸起始浓度、液固比、反应温度、浸出时间、氧化剂和助浸剂Cu^2+对砷冰铜中铜浸出率的影响。结果表明,在始酸浓度150g/L、液固比8∶1、浸出温度85℃、浸出时间3h、氧化剂双氧水加入量2.5mL/g和助浸剂Cu^2+浓度2g/L的最优工艺条件下,砷冰铜中铜浸出率可达96.35%,砷浸出率为76.16%,铅、银入渣率大于99%。浸出渣在火法炼铅系统回收铅、银等有价金属,从而使铜、铅、银等有价金属得到综合回收。
Effects of initial concentration of sulfuric acid,L/S,reaction temperature,leaching time,oxidizing agent,and assisting leaching agent(Cu^2+)on copper leaching rate in arsenic matte were investigated at atmospheric pressure.The results indicate that leaching rate of copper and arsenic from arsenic matte is 96.35%and 76.16%respectively,while content of lead and silver entering residue is both 99%above under the optimum conditions including initial sulfuric acid concentration of 150g/L,L/S=8/1,reaction temperature of 85℃,leaching time of 3h,dosage of oxidizing agent(H2O2)of 2.5mL/g,and concentration of assisting leaching agent(Cu^2+)of 2g/L.Lead and silver in leaching residue can be recycled by pyrometallurgical lead smelting.Valuable metals such as copper,lead,silver etc.can be comprehensively recovered.
作者
郭远贵
廖谨鹏
刘伟
段良洪
王敏杰
尹健夫
曹文法
GUO Yuan-gui;LIAO Jin-peng;LIU Wei;DUAN Liang-hong;WANG Min-jie;YIN Jian-fu;CAO Wen-fa(Chenzhou Fengyue Science and Technology Co.,Ltd.,Chenzhou 423000,Hunan,China)
出处
《有色金属(冶炼部分)》
CAS
北大核心
2020年第1期22-26,45,共6页
Nonferrous Metals(Extractive Metallurgy)
关键词
砷冰铜
常压
酸浸
综合回收
arsenic matte
atmospheric pressure
acid leaching
comprehensive recovery