Next Article in Journal
Post Neutron Irradiation Recovery and Recrystallization of ITER Grade Forged Tungsten Bar
Previous Article in Journal
Non-Uniform Thermal Transfer of Molten Steel and Its Effect on Inclusion Particles Removal Behavior in Continuous Casting Tundish
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Metals
Volume 15
Issue 2
10.3390/met15020171
metals-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

New Process for Efficient Separation and Comprehensive Recovery of Valuable Metals from Jarosite Residues

by
Qi Zhou
1,
Jian Pan
1,2,*,
Deqing Zhu
1,2,
Congcong Yang
1,2,
Zhengqi Guo
1,2,
Siwei Li
1,2 and
Xianqing Xu
1
1
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
2
Low Carbon and Hydrogen Metallurgy Research Centre (CSU-LCHMC), Central South University, Changsha 410083, China
*
Author to whom correspondence should be addressed.
Metals 2025, 15(2), 171; https://doi.org/10.3390/met15020171
Submission received: 5 January 2025 / Revised: 5 February 2025 / Accepted: 6 February 2025 / Published: 8 February 2025
Browse Figure
Versions Notes

Abstract

Jarosite residue (JR), a hazardous solid waste generated in non-ferrous metallurgy, poses significant environmental challenges due to its large volume and poor storage stability. However, its high content of valuable metals (such as iron, zinc, gallium, indium, silver, …) makes its efficient recovery and comprehensive utilization highly significant. This study investigates the “oxidative roasting–reductive smelting” process for JR treatment. The reduction thermodynamics of JR-R (roasted JR) were analyzed, and the effects of smelting temperature, time, and slag basicity on the reduction and smelting process were examined. The results indicate that increasing slag basicity and temperature generally decreases slag viscosity. Thermodynamic calculations demonstrate that reductive smelting effectively enriches valuable metals (>1039 °C). The optimal conditions for reductive smelting of JR were determined to be as follows: smelting temperature of 1550 °C, smelting time of 60 min, and slag basicity of 0.9. Under these conditions, the process achieved an Fe grade of 92.87% in pig iron with a recovery rate of 90.66%, a Ga grade of 377 g/t with a recovery rate of 94.91%, and Zn and In volatilization rates of 99.91% and 83.36%, respectively. This study provides a feasible approach for the comprehensive recovery of valuable metals such as Ga, Fe, Zn, and In from JR, offering promising economic and social benefits.
Keywords: jarosite residues; valuable metals; reduction smelting; thermodynamics; comprehensive recovery jarosite residues; valuable metals; reduction smelting; thermodynamics; comprehensive recovery
Graphical Abstract

Share and Cite

MDPI and ACS Style

Zhou, Q.; Pan, J.; Zhu, D.; Yang, C.; Guo, Z.; Li, S.; Xu, X. New Process for Efficient Separation and Comprehensive Recovery of Valuable Metals from Jarosite Residues. Metals 2025, 15, 171. https://doi.org/10.3390/met15020171

AMA Style

Zhou Q, Pan J, Zhu D, Yang C, Guo Z, Li S, Xu X. New Process for Efficient Separation and Comprehensive Recovery of Valuable Metals from Jarosite Residues. Metals. 2025; 15(2):171. https://doi.org/10.3390/met15020171

Chicago/Turabian Style

Zhou, Qi, Jian Pan, Deqing Zhu, Congcong Yang, Zhengqi Guo, Siwei Li, and Xianqing Xu. 2025. "New Process for Efficient Separation and Comprehensive Recovery of Valuable Metals from Jarosite Residues" Metals 15, no. 2: 171. https://doi.org/10.3390/met15020171

APA Style

Zhou, Q., Pan, J., Zhu, D., Yang, C., Guo, Z., Li, S., & Xu, X. (2025). New Process for Efficient Separation and Comprehensive Recovery of Valuable Metals from Jarosite Residues. Metals, 15(2), 171. https://doi.org/10.3390/met15020171

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop