Removal of Pb and Zn from copper slag during carbothermic reduction

被引：0
|
作者：
Zhang X. [1 ]
Luo L. [1 ,2 ]
Wang H. [1 ,2 ]
机构：
[1] School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan
[2] Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Wuhan
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2022年 / 53卷 / 02期
基金：
中国国家自然科学基金; 中央高校基本科研业务费专项资金资助;
关键词：
Carbothermic reduction; Copper slag; Pb; Removal ratio; Zn;
D O I：
10.11817/j.issn.1672-7207.2022.02.002
中图分类号：
学科分类号：
摘要：
The phase transformation of copper slag and removal of Pb and Zn during carbothermic reduction were systemically studied using X-ray diffraction, scanning electron microscope and energy dispersive spectrometer. Furthermore, the mechanism of removal of Pb and Zn was analyzed. The results show that Pb in copper slag mainly exists in glass phase and Zn distributed in fayalite. Increasing the roasting temperature and prolonging the reaction time can accelerate the decomposition of fayalite into metallic iron and silica solid solutions during carbothermic reduction, and meanwhile enhance the removal ratio of Pb and Zn. The linear relationship between removal ratio of Pb and reduction degree of Fe is poor, but the removal ratio of Zn has a good linear relationship with reduction degree of Fe, which is caused by the distribution of Pb and Zn in copper slag. © 2022, Central South University Press. All right reserved.
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页码：379 / 386
页数：7
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