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| Recovery of copper and zinc by bulk flotation and subsequent separation from an iron tailings in Western Yunnan |
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Received:December 17, 2024
Revised:February 23, 2025
Accepted:February 27, 2025
Published Online:April 30, 2026
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| DOI：10.3969/j.issn.1005-7854.2025.06.013 |
| KeyWord:polymetallic ore;iron tailings;bulk flotation;copper-zinc separation;copper concentrate;zinc concentrate |
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| 1.Faculty of Land and Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China;2.State Key Laboratory of Clean Utilization of Complex Non-Ferrous Metal Resources, Kunming 650093, China;3.Tengchong Hengyi Mineral Products Economic and Trade Co. Ltd., Baoshan 678000, Yunan, China |
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| Abstract: |
| Process mineralogy and a comprehensive recovery strategy were investigated for a magnetic separation tailings (containing 0.21% Cu and 0.68% Zn) from an iron-copper polymetallic ore in western Yunnan, utilizing chemical multi-element analysis, XRD, and chemical phase analysis. The results indicated that the primary valuable elements were copper and zinc, hosted mainly by chalcopyrite and sphalerite, respectively, with the gangue minerals predominantly consisting of mica, serpentine, and talc. A xanthate-ester combination collector, YX-LB3, was employed for the bulk flotation of copper and zinc, establishing a full-flowsheet process of "bulk Cu-Zn flotation — regrinding and copper separation from the bulk concentrate — zinc flotation from the copper separation tailings". Closed-circuit tests yielded a copper concentrate grading 15.86% Cu with a recovery of 40.55%, and a zinc concentrate grading 48.22% Zn with a recovery of 63.17%. This study provides a technical basis for the efficient separation and comprehensive recovery of low-grade, refractory copper-zinc sulfide resources. |
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