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Volume 13
Issue 2
10.3390/met13020250
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Article

Recovery of Valuable Metals by Roasting of Jarosite in Cement Kiln

by
Hui Ge
1,2,
Zhigang Pan
3,
Feng Xie
1,2,*,
Diankun Lu
1,2,*,
Wei Wang
1,2 and
Shulin Wu
1,2
1
Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), Northeastern University, Shenyang 110819, China
2
School of Metallurgy, Northeastern University, Shenyang 110819, China
3
Anhui Chaowei Power Supply Co., Ltd., Chizhou 247100, China
*
Authors to whom correspondence should be addressed.
Metals 2023, 13(2), 250; https://doi.org/10.3390/met13020250
Submission received: 24 December 2022 / Revised: 18 January 2023 / Accepted: 19 January 2023 / Published: 28 January 2023
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Abstract

The jarosite residue is a harmful byproduct of the zinc hydrometallurgical process and has been classified as hazardous waste due to its high content of heavy metals and poor stability. In this work, the recovery of valuable metals by synergistic disposal of jarosite residue with cement kiln has been investigated. A series of investigations were undertaken to assess the effect of amount of jarosite residue, roasting time, and the addition of CaCl2 on phase transformation and migration of valuable elements in the cement clinker. When 25% of jarosite residue was added to the raw cement materials and roasted at 1400 °C for 30 min, the silicate content in the cement clinker reached 54.4%. In the presence of CaCl2 as the mineralizer, the volatilization rates of Pb and Zn were 93% and 75%, respectively. The results indicated that jarosite residue can be used as the cement additive and valuable metals of Pb and Zn can be recovered simultaneously during the roasting process.
Keywords: jarosite residue; cement; Pb and Zn; synergistic roasting jarosite residue; cement; Pb and Zn; synergistic roasting

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MDPI and ACS Style

Ge, H.; Pan, Z.; Xie, F.; Lu, D.; Wang, W.; Wu, S. Recovery of Valuable Metals by Roasting of Jarosite in Cement Kiln. Metals 2023, 13, 250. https://doi.org/10.3390/met13020250

AMA Style

Ge H, Pan Z, Xie F, Lu D, Wang W, Wu S. Recovery of Valuable Metals by Roasting of Jarosite in Cement Kiln. Metals. 2023; 13(2):250. https://doi.org/10.3390/met13020250

Chicago/Turabian Style

Ge, Hui, Zhigang Pan, Feng Xie, Diankun Lu, Wei Wang, and Shulin Wu. 2023. "Recovery of Valuable Metals by Roasting of Jarosite in Cement Kiln" Metals 13, no. 2: 250. https://doi.org/10.3390/met13020250

APA Style

Ge, H., Pan, Z., Xie, F., Lu, D., Wang, W., & Wu, S. (2023). Recovery of Valuable Metals by Roasting of Jarosite in Cement Kiln. Metals, 13(2), 250. https://doi.org/10.3390/met13020250

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