Qi Zhou, Jian Pan
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.
@article{53293d2e-2791-4e28-9559-3c182ffd00f5,
title={New Process for Efficient Separation and Comprehensive Recovery of Valuable Metals from Jarosite Residues},
author={Qi Zhou and Jian Pan},
year={2025},
language={English}
}TY - JOUR TI - New Process for Efficient Separation and Comprehensive Recovery of Valuable Metals from Jarosite Residues AU - Qi Zhou AU - Jian Pan PY - 2025 LA - English ER -
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