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| Jigging pre-enrichment process for a refractory oxidized lead-zinc ore |
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Received:October 06, 2024
Revised:April 01, 2025
Accepted:April 03, 2025
Published Online:April 30, 2026
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| DOI：10.3969/j.issn.1005-7854.2026.01.006 |
| KeyWord:oxidized lead-zinc ore;jigging;pre-enrichment;tailing rejection;process mineralogy |
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| 1.Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China;2.Yunnan Key Laboratory of Green Separation and Enrichment of Strategic Mineral Resources, Kunming 650093, China;3.Kunming Metallurgical Research Institute, Kunming 650031, China |
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| Abstract: |
| Oxidized lead-zinc ores represent an important source of lead and zinc resources. However, their complex material composition, fine mineral dissemination, close association with gangue minerals, and susceptibility to sliming make it difficult for conventional beneficiation processes to obtain lead and zinc concentrates with both high grade and high recovery. To address this challenge, this study focuses on a refractory oxidized lead-zinc ore characterized by a high oxidation rate and high slime content. A jigging pre-enrichment process is proposed, aiming to pre-remove a significant amount of slime and upgrade the lead-zinc grade, thereby providing qualified feed for subsequent flotation operations. The research began with a systematic analysis of the ore properties through process mineralogy. Subsequently, guided by the principles of gravity separation feasibility, the effects of key parameters-including feed rate, artificial bed thickness, and water flow rate-on the enrichment behavior of lead and zinc were investigated in detail. Experimental results indicate that under optimal conditions, the grades of lead and zinc were significantly increased from 1.15% and 6.13% in the raw ore to 1.76% and 11.11%, respectively, with recoveries reaching 85.04% and 83.33%. Concurrently, the tailings yield reached 41.30%, effectively achieving the dual objectives of efficiently enriching lead and zinc while discarding a large proportion of tailings. This study provides a promising technical pathway for the efficient utilization of refractory oxidized lead-zinc ores. |
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