Zinc leaching from electric arc furnace dust in alkaline medium

被引：0
|
作者：
李宏煦 [1 ,2 ]
王洋 [1 ,2 ]
苍大强 [1 ,2 ]
机构：
[1] School of Metallurgy and Ecology Engineering,University of Science and Technology Beijing
[2] Key Laboratory of Ecological and Recycling Metallurgy of Ministry of Education,University of Science and Technology Beijing
来源：
Journal of Central South University | 2010年 / 17卷 / 05期
基金：
中国国家自然科学基金;
关键词：
electric arc furnace (EAF) dust; zinc leaching; hydrometallurgy; thermodynamics; leaching kinetics; recycling;
D O I：
暂无
中图分类号：
X757 [黑色金属冶炼];
学科分类号：
083002 ;
摘要：
Physical and chemical properties of electric arc furnace(EAF) dust from Tianjin seamless Pipe Company were measured and analyzed.The zinc leaching tests in alkaline medium were carried out under variation of leaching agent concentration,leaching temperature,leaching cumulative time and solid-to-liquid ratio.The thermodynamics and kinetics of the zinc leaching process were also analyzed.The results show that the EAF dust contains 10%(mass fraction) zinc and the median particle size is 0.69μm.The zinc recovery of 73.4%is obtained under the condition of 90℃,6 mol/L NaOH,and 60 min leaching time.With the increase of concentration of NaOH and the cumulative time,zinc leaching will be significantly increased.The kinetics study demonstrates that the leaching reaction is chemically controlled and the reaction activation energy is 15.73 kJ/mol.
引用
收藏
页码：967 / 971
页数：5
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