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| Process Improvement for Indium Leaching from Evaporation Dust of High Acid Leaching Residues in Zinc Hydrometallurgy |
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Received:April 12, 2016
Revised:May 08, 2016
Accepted:May 09, 2016
Published Online:September 20, 2016
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| DOI：doi：10.3969/j.issn.1007-7545.2016.10.014 |
| KeyWord:high acid leaching residue in zinc hydrometallurgy; dust; indium; process improvement |
| Author | Institution |
| Zhang Kaixia |
桂林理工大学 |
| Li Qijun |
桂林理工大学 |
| Chen Dingyuan |
桂林理工大学 |
| Yang Jianwen |
桂林理工大学 |
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| Abstract: |
| The feasibility to improve indium leaching rate from high acid leaching residue in zinc hydrometallurgy was investigated applying solution of H2SO4, HCl-NaCl, and NaOH respectively as leaching agent. The results show that the main cause of low indium leaching rate is package formation of insoluble materials, such as SnO2, PbO, SiO2, MeS and secondary PbSO4 from sulfuric acid leaching process. Those packages can be effectively unpacked by alkaline treatment and with assistance of ball milling, and indium leaching rate can be improved to 97% above. Workable principles process is proposed. |
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