Abstract
Oxygen pressure acid leaching residue of zinc sulfide concentrate contains abundant elemental sulfur that has excellent natural hydrophobicity, and thus, it is considered an important secondary resource for recovering simple substance with froth flotation technique. However, the separation of simple substance from sulfide minerals in the residue is difficult mainly because of their similar hydrophobicity. In this research, we proposed an effective flotation process for selective recovery of simple substance from an oxygen pressure acid leaching residue of zinc sulfide concentrate. After one-time blank rougher, two-time agent-added roughers, and two-time cleaners separately using Z-200 as the collector and combined agent Na2SO3 + ZnSO4 + Na2S as the inhibitor, 99.2% of the elemental sulfur was recovered and the purity of concentrate product achieved 83.25%. Most of the lead, zinc, and silver went into the tailing that can be used as the raw material of pyro-metallurgical lead smelting for recovering these valuable metals.
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Acknowledgements
This research was funded by National Key Research and Development Program of China (Nos. 2018YFC1902005 and 2018YFC1902006).
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Liu, G. et al. (2022). Comprehensive Recovery of Oxygen Pressure Acid Leaching Residue of Zinc Sulfide Concentrate. In: TMS 2022 151st Annual Meeting & Exhibition Supplemental Proceedings. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-92381-5_1
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DOI: https://doi.org/10.1007/978-3-030-92381-5_1
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