Recovery of zinc and lead from zinc plant residue

被引:171
作者
Turan, MD
Altundogan, HS [1 ]
Tümen, F
机构
[1] Frat Univ, Dept Chem Engn, TR-23279 Elazig, Turkey
[2] Frat Univ, Dept Met & Mat Engn, TR-23279 Elazig, Turkey
关键词
zinc; lead; leaching; zinc plant residue; sulphuric acid; NaCl;
D O I
10.1016/j.hydromet.2004.07.008
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
Zinc and lead recovery from zinc plant residue (ZPR) has been investigated. The residue is discarded as a cake from a Waelz kiln processing zinc-lead carbonate ores. The zinc plant residue containing 11.3% Zn, 24.6% Pb, and 8.3% Fe was blended with H2SO4 and subjected to a process comprising roasting, water leaching, and finally NaCl leaching. The effect of roasting and leaching parameters on the zinc recovery was first studied. About 86% Zn was recovered after roasting at 200 degreesC for 30 min with an equal weight ratio of H2SO4/ZPR followed by leaching at 25 degreesC for 60 min with a pulp density of 20% solids. For lead recovery, the residual solid after zinc extraction was subjected to NaCl leaching. At a pulp density of 20 g/L, about 89% Ph was dissolved in 200 g/L NaCl at 25 degreesC in 10 min. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:169 / 176
页数:8
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