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| Experimental study on comprehensive recovery of gold, silver and iron associated with complex polymetallic tailings |
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Received:April 07, 2022
Revised:April 12, 2022
Accepted:April 13, 2022
Published Online:October 25, 2022
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| DOI： |
| KeyWord:Magnetic separation; Full mud cyanide leaching; Reverse flotation desulfurization |
| Author | Institution |
| ZHOU Guang-lang |
Yunnan Gold Mining Group Co. Ltd. |
| ZHOU Dong-yun |
Yunnan Gold Mining Group Co. Ltd. |
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| Abstract: |
| In order to comprehensively recover the gold, silver and iron associated with a complex polymetallic flotation tailings, magnetic separation, full-slime cyanidation leaching and reverse flotation were carried out respectively. The results show that it is better to use the strong magnetic pre-selection tail-throwing method to enrich iron-bearing minerals first, and then use the scheme of recovering gold and silver first and then selecting iron. Under the combined process of "strong magnetic tail throwing-full mud cyanidation leaching-weak magnetic iron separation-strong magnetic iron separation, reverse flotation desulfurization of magnetite concentrate", the leaching rates of gold and silver reached 85.32% and 72.13% respectively. And obtained TFe grade of 62.01%, TFe recovery rate of 11.04%, magnetite concentrate with sulfur content of 0.25%, and TFe grade of 45.30%, TFe recovery rate of 18.54% iron concentrate products. |
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