CARROLLITE LEACHING IN H2SO4-NACLO3 MEDIA AT ATMOSPHERIC PRESSURE

被引：0
|
作者：
Dong, Bo [1 ]
Wu, Jian-Hui [1 ]
Wu, Jun [2 ]
Zhang, Xian-Peng [1 ]
Zhai, Jing-Jun [1 ]
机构：
[1] Cent South Univ, Sch Met & Environm, Changsha 410083, Peoples R China
[2] Imperial Coll London, Coll Chem, London SW7 2AZ, England
来源：
ARCHIVES OF METALLURGY AND MATERIALS | 2020年 / 65卷 / 01期
关键词：
CuCo2S4; atmospheric leaching; H2SO4-NaClO3; media; SULFURIC-ACID; CONVERTER SLAG; CHALCOPYRITE; DISSOLUTION; CHLORIDE; COPPER; COBALT; EXTRACTION; KINETICS; NICKEL;
D O I：
10.24425/amm.2020.131732
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A new extraction process suitable for treating refractory CuCo2S4 under atmospheric pressure acidic leaching conditions was investigated. The effect of variables such as oxidant species, liquid-to-solid ratio, leaching time, oxidizing agent and mineral quality ratio, H2SO4 concentration, temperature and sodium chloride concentration on the extraction efficiency of Co, Cu and Fe from CuCo2S4 were investigated. Under optimal conditions including P-8(0)-P-90 of the sample was d < 0.0074 mm, stirring speed of - 400 rpm, leaching time of 8 h with sodium chlorate (NaClO3) and mineral quality ratio of 0.5, 2 mol/L H2SO4, liquid-to-solid ratio of 7, leaching temperature of 90 degrees C and 4 mol/L sodium chloride. The leaching efficiency of Co, Cu, and Fe were nearly 97.08%, 100%, and 92.45%, respectively. Furthermore, the contents of cobalt and copper in leaching residue were all less than 0.4 wt.%, which satisfies the requirements of industrial production.
引用
收藏
页码：313 / 319
页数：7
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