Chlorination reaction mechanism between ZnFe2O4 and CaCl2

GUO Ting; HU Xiao-jun; HOU Xin-mei; SONG Pu-hong-xing; YUE Qiao-wen-xiao; ZHOU Guo-zhi

doi:10.13374/j.issn1001-053x.2011.04.016

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GUO Ting, HU Xiao-jun, HOU Xin-mei, SONG Pu-hong-xing, YUE Qiao-wen-xiao, ZHOU Guo-zhi. Chlorination reaction mechanism between ZnFe2O4 and CaCl2[J]. Chinese Journal of Engineering, 2011, 33(4): 474-478. doi: 10.13374/j.issn1001-053x.2011.04.016

Citation:

GUO Ting, HU Xiao-jun, HOU Xin-mei, SONG Pu-hong-xing, YUE Qiao-wen-xiao, ZHOU Guo-zhi. Chlorination reaction mechanism between ZnFe₂O₄ and CaCl₂[J]. Chinese Journal of Engineering, 2011, 33(4): 474-478. doi: 10.13374/j.issn1001-053x.2011.04.016

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Chlorination reaction mechanism between ZnFe₂O₄ and CaCl₂

doi: 10.13374/j.issn1001-053x.2011.04.016

1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. Shougang Research Institute of Technology, Beijing 100043, China;
3. Key Laboratory of the Ministry of Education of China for Ecological and Recycle Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;
4. Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan

Received Date: 2010-06-01
Available Online: 2021-07-30
Publish Date: 2021-07-30

Abstract

Abstract

CaCl₂ was used to chlorinate ZnFe₂O₄,an important component in metallurgical dust.The changes of the reaction surface between ZnFe₂O₄ and CaCl₂ and the microstructure of reaction products were investigated by scanning electron microscopy(SEM) and energy dispersive spectrometry(EDS),and the reaction mechanism was discussed.It is considered that the whole process includes a solid-liquid reaction and a gas volatilization.ZnFe₂O₄ particles are coated by melted CaCl₂ and the chlorination reaction occurs at the liquid-solid interface,the product ZnCl₂ dissolves in the liquid membrane of CaCl₂ and escapes from the gas-liquid interface.During the chlorination reaction,the product layer of ZnFe₂O₄ increases companying with the adhering and growing up of the particles.
- metallurgical industries,
- solid wastes,
- dust,
- chlorination,
- reaction mechanism