低温碱性熔炼分离富集铜阳极泥中的有价金属  

Valuable metals separation from copper anode slime by low-temperature alkaline smelting process

作　　者：郭学益[1,2] 许志鹏[1,2] 田庆华[1,2] 李栋[1,2] 

机构地区：[1]中南大学冶金与环境学院,长沙410083 [2]中国有色金属工业清洁冶金工程研究中心,长沙410083

出　　处：《中国有色金属学报》2015年第8期2243-2250,共8页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金重点项目(51234009);国家自然科学基金面上项目(51074190);湖南省自然科学基金青年基金资助项目(14JJ3017);教育部博士点基金资助项目(20110162110049)

摘　　要：采用低温碱性熔炼处理铜阳极泥(CAS),研究熔炼浸出过程各有价金属的分离富集行为。分析碱料比、熔炼温度、熔炼时间、浸出温度、浸出时间和液固比等6个因素对金属浸出率的影响。结果表明:优化条件为碱料比为0.5,熔炼温度为600℃,熔炼时间为60 min,浸出温度为70℃,浸出时间为60 min,液固比为12.5 m L/g。在此优化条件下,Se和As的浸出率分别达95.79%和96.83%,Cu、Pb、Sb和Te的浸出率分别为0.16%、3.36%、1.02%和0.05%,实现了铜阳极泥中有价金属的有效分离和富集。The valuable metals were separated from copper anode slime （CAS） by low-temperature alkaline smelting process. The effects of the mass ratio of NaOH, smelting temperature, smelting time, leaching temperature, leaching time and liquid-solid ratio on the leaching efficiency of metals were investigated. The results show that the optimum conditions are determined as follows： m（NaOH）/m（CAS） is 0.5, smelting temperature is 600 ℃, smelting time is 60 min, leaching temperature is 70 ℃, leaching time is 60 min and liquid-solid ratio is 12.5 mL/g. Under the optimum conditions, leaching efficiencies of Se and As are 95.79% and 96.83%, while the leaching efficiencies of Cu, Pb, Sb and Te are 0.16%, 3.36%, 1.02% and 0.05%, respectively, leading to the separation and enrichment of valuable metals from copper anode slime relatively.

关 键 词：低温碱性熔炼 铜阳极泥 有价金属 分离 富集 

分 类 号：TF83[冶金工程—有色金属冶金]