Study of a Novel Chloride Volatilization
Process for the Treatment of Jarosite
Residue
H. B. Wang, C. Z. Zheng and S. C. Qin
Abstract A novel chloride volatilization process for the treatment of jarosite residue
stored in Serbia has been developed. In this process, valuable metals such as lead,
zinc, copper, silver, and indium are chlorinated and volatilized with the addition
of chlorinating agent. Iron is enriched in the slag and used in iron making systems after magnetic separation or other methods. Sulfur combines with calcium and
forms a stable calcium sulfate to avoid the production of sulfur dioxide. The influence of reducing agent, chlorinating agent, and temperature on the volatilization rate
of zinc, lead, copper, silver, and indium is investigated. The results show that the
addition of chlorinating agent, reducing agent, and temperature has an effect on the
metal volatilization rate; the addition of chlorinating agent improves the volatilization rate of lead, zinc, copper, silver, and indium; and the addition of reducing agent
further improves the metal recovery rate. Under the recommended conditions, the
volatilization rate of each element is zinc 98.26%, lead 99.88%, copper 97.32%,
indium 58.73%, and silver 95.22%, respectively. The chloride volatilization process
not only transforms jarosite residue into general solid waste, but also comprehensively recovers valuable metals such as lead, zinc, copper, silver, indium, and iron.
The process completely solves the potential pollution of jarosite residue and has
good economic benefits.
Keywords Jarosite residue · Chloride volatilization · Comprehensive utilization
H. B. Wang (B) · C. Z. Zheng · S. C. Qin
BGRIMM Technology Group, Beijing 100070, China
e-mail: whaibei_01@163.com
C. Z. Zheng
e-mail: zhengchaozhen123@163.com
S. C. Qin
e-mail: qshuchen@163.com
C. Z. Zheng
University of Science and Technology Beijing, Beijing 100083, China
© The Minerals, Metals & Materials Society 2020
A. Siegmund et al. (eds.), PbZn 2020: 9th International Symposium
on Lead and Zinc Processing, The Minerals, Metals & Materials Series,
https://doi.org/10.1007/978-3-030-37070-1_73
835
Process for the Treatment of Jarosite
Residue
H. B. Wang, C. Z. Zheng and S. C. Qin
Abstract A novel chloride volatilization process for the treatment of jarosite residue
stored in Serbia has been developed. In this process, valuable metals such as lead,
zinc, copper, silver, and indium are chlorinated and volatilized with the addition
of chlorinating agent. Iron is enriched in the slag and used in iron making systems after magnetic separation or other methods. Sulfur combines with calcium and
forms a stable calcium sulfate to avoid the production of sulfur dioxide. The influence of reducing agent, chlorinating agent, and temperature on the volatilization rate
of zinc, lead, copper, silver, and indium is investigated. The results show that the
addition of chlorinating agent, reducing agent, and temperature has an effect on the
metal volatilization rate; the addition of chlorinating agent improves the volatilization rate of lead, zinc, copper, silver, and indium; and the addition of reducing agent
further improves the metal recovery rate. Under the recommended conditions, the
volatilization rate of each element is zinc 98.26%, lead 99.88%, copper 97.32%,
indium 58.73%, and silver 95.22%, respectively. The chloride volatilization process
not only transforms jarosite residue into general solid waste, but also comprehensively recovers valuable metals such as lead, zinc, copper, silver, indium, and iron.
The process completely solves the potential pollution of jarosite residue and has
good economic benefits.
Keywords Jarosite residue · Chloride volatilization · Comprehensive utilization
H. B. Wang (B) · C. Z. Zheng · S. C. Qin
BGRIMM Technology Group, Beijing 100070, China
e-mail: whaibei_01@163.com
C. Z. Zheng
e-mail: zhengchaozhen123@163.com
S. C. Qin
e-mail: qshuchen@163.com
C. Z. Zheng
University of Science and Technology Beijing, Beijing 100083, China
© The Minerals, Metals & Materials Society 2020
A. Siegmund et al. (eds.), PbZn 2020: 9th International Symposium
on Lead and Zinc Processing, The Minerals, Metals & Materials Series,
https://doi.org/10.1007/978-3-030-37070-1_73
835