Oxidation Leaching of Arsenic Containing Dust with Sulfuric Acid and Arsenic Removal by Precipitation

被引：0
|
作者：
Bi, Fan [1 ]
Qin, Qingwei [1 ]
Wu, Xinglin [1 ]
Tang, Haibo [1 ]
机构：
[1] Wuhan Univ Sci & Technol, Key Lab Ferrous Met & Resources Utilizat, Minist Educ, Wuhan 430081, Hubei, Peoples R China
来源：
2016 INTERNATIONAL CONFERENCE ON MATERIAL, ENERGY AND ENVIRONMENT ENGINEERING (ICM3E 2016) | 2016年
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D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Dust is one of the main by-products in copper smelting process. It not only contains valuable elements Cu, Pb, zinc, Sn, Se and Te, also contains As, Sb and other hazardous elements. Pretreatment of acidic oxidation leaching and precipitation was explored to recovery In, Se and Te in dust. The optimum leaching parameters was determined by thermodynamic calculation and single factor experiments. The results showed that at 80 degrees C, 105 min leaching time, 10: 1(ml/g) liquid to solid ratio, 1.75ml/g H2O2 dosage and 705r/min agitation speed, the leaching rate of arsenic was 78.25%. Under the conditions of 1.2 Fe/As mole ratio and end precipitation pH 5.0, arsenic precipitation rate reaches 98.52%. The arsenic removal pretreatment was achieved in comprehensive utilization.
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页码：404 / 410
页数：7
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