Zinc leaching from electric arc furnace dust in alkaline medium

被引：28

作者：

Li Hong-xu ^{[1
,2
]}

Wang Yang ^{[1
,2
]}

Cang Da-qiang ^{[1
,2
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China

[2] Univ Sci & Technol Beijing, Minist Educ, Key Lab Ecol & Recycling Met, Beijing 100083, Peoples R China

来源：

JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY | 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; EAF DUST; EXTRACTION;

D O I：

10.1007/s11771-010-0585-2

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

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 069 mu m The zinc recovery of 73 4% is obtained under the condition of 90 C, 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

页码：967 / 971

页数：5

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