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| Process Mineralogy of Jarosite Slag of Zinc Hydrometallurgy |
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Received:November 30, 2024
Revised:December 24, 2024
Accepted:December 25, 2024
Published Online:March 18, 2025
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| DOI：doi：10.20237/j.issn.1007-7545.2025.04.017 |
| KeyWord:zinc hydrometallurgy; jarosite slag; process mineralogy; harmless disposal |
| Author | Institution |
| GONG Yanfei |
白银有色集团股份有限公司 |
| YANG Bin |
西北矿冶研究院 |
| MIN Xiaobo |
中南大学冶金与环境学院 |
| LI Yuliang |
西北矿冶研究院 |
| LI Yanlong |
西北矿冶研究院 |
| CHENG Liang |
西北矿冶研究院 |
| TAO Cheng |
西北矿冶研究院 |
| LU Xingwu |
中南大学冶金与环境学院 |
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| Abstract: |
| The jarosite slag produced from process of iron removal from the zinc leaching process in a lead-zinc smelter in northwest China was taken as the research object. The chemical composition, mineral composition and occurrence state of valuable minerals such as iron and zinc, and the carbothermal reduction process of jarosite slag were studied in detail by means of chemical multi-element analysis, MLA, SEM and TG-DSC. The results show that the main valuable elements in jarosite slag are iron, zinc, lead, etc. The iron mainly exists in ferrite, zinc mainly exists in zinc sulfate and zinc ferrite, and the lead mainly distributes in the ferrite slag by cerusite, plumbojarosite, lead sulfide and lead sulfate. Through TG-DSC analysis, iron, zinc and lead in jarosite slag can be decomposed within 1 400 ℃, and the valuable metals can be recovered by carbothermal reduction. |
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