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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Materials Processing Fundamentals
Presentation Title Comprehensive Recovery of Elemental Sulfur and Sulfide Minerals from Pressure Acid Leaching Residue of Zinc Sulfide Concentrate with an Integrated Flocculation Flotation-hot Filtration Process
Author(s) Guiqing Liu, Bangsheng Zhang, Zhonglin Dong, Fan Zhang , Fang Wang, Jintian Wu, Tao Jiang, Bin Xu
On-Site Speaker (Planned) Guiqing Liu
Abstract Scope An efficient flocculation flotation-hot filtration process was developed to recover elemental sulfur and sulfide minerals from a pressure acid leaching residue of zinc sulfide concentrate. The particle size distribution of the residue indicated that the portion of thin particle with the size of -37 um reached 67.65% and 36.27% of sulfur in the residue was distributed in this size fraction, necessitating the flocculation flotation for recovering the elemental sulfur and sulfide minerals. 94.59% of the sulfur was recovered with the flotation process of one-time blank rougher, two-time agent-added roughers and two-time blank cleaners with Z-200 as the collector and polyacrylamide as the flocculant. After hot filtration for the flotation concentrate at 145 C for 2 h, 85.32% of the elemental sulfur in the concentrate was recovered and its product purity reached 98.64%. The filter cake of sulfide minerals can be returned to the leaching stage for zinc recovery.
Proceedings Inclusion? Planned:
Keywords Extraction and Processing, Sustainability, Process Technology

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