Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第25卷    第8期    总第197期    2015年8月

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文章编号:1004-0609(2015)08-2243-08
低温碱性熔炼分离富集铜阳极泥中的有价金属
郭学益1, 2,许志鹏1, 2,田庆华1, 2,李 栋1, 2

(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
)

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 mL/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。

 

关键字: 低温碱性熔炼;铜阳极泥;有价金属;分离;富集

Valuable metals separation from copper anode slime by low-temperature alkaline smelting process
GUO Xue-yi1, 2, XU Zhi-peng1, 2, TIAN Qing-hua1, 2, LI Dong1, 2

1. School of Metallurgy and Environment, Central South University, Changsha 410083, China;
2. Cleaner Metallurgical Engineering Research Center, Nonferrous Metal Industry of China, Changsha 410083, China

Abstract: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.

 

Key words: low-temperature alkaline smelting; copper anode slime; valuable metal; separation; enrichment

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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