Treatment of sulphate leach liquors to recover cobalt from waste dusts generated by the glass industry

被引：15
|
作者：
Jandová, J [1 ]
Vu, H [1 ]
Dvorák, P [1 ]
机构：
[1] Inst Chem Technol, Dept Met & Corros Engn, CR-16628 Prague, Czech Republic
来源：
HYDROMETALLURGY | 2005年 / 77卷 / 1-2期
关键词：
recycling cobalt dust; sulphuric acid leaching; basic cobalt(II) carbonate; metallic cobalt;
D O I：
10.1016/j.hydromet.2004.10.010
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A hydrometallurgical process has been developed for cobalt recovery from a waste dust formed during the colouring of glass plates. This dust, containing about 33% Co, is highly contaminated by Fe and Cr. The process consists of the following major steps: (1) leaching the dust in H2SO4; (2) purification of leach liquors by hydrolytic precipitation using Na2CO3 and/or K2CO3 as neutralizing agent; (3) precipitation of basic cobalt(H) carbonate; (4) dissolution of basic cobalt(II) carbonate in sulphuric acid and separation of residual chromium; (5) electrowinning of cobalt from refined sulphate solutions. A compact metallic deposit containing >= 99.5% Co was obtained. (c) 2005 Elsevier B.V. All rights reserved.
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页码：67 / 73
页数：7
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