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| Experimental Study on Improvement of Iron Recovery Process in Cyanide Tailings of a Gold Mine in Yunnan |
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Received:November 27, 2018
Revised:March 12, 2019
Accepted:January 08, 2019
Published Online:May 13, 2019
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| DOI： |
| KeyWord:Cyanide;tailings magnetite;limonite magnetic;separation |
| Author | Institution |
| Gong Minghui |
Heqing Beiya Mining Co,Ltd,Yunnan Gold Mining Group |
| wangyong |
Heqing Beiya Mining Co,Ltd,Yunnan Gold Mining Group |
| gao qifang |
Heqing Beiya Mining Co,Ltd,Yunnan Gold Mining Group |
| yinfuxing |
Heqing Beiya Mining Co,Ltd,Yunnan Gold Mining Group;China |
| niezuming |
Heqing Beiya Mining Co,Ltd,Yunnan Gold Mining Group |
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| Abstract: |
| In order to solve the problem of low recovery rate of magnetite in iron recovery from cyanide tailings of a gold mine in Yunnan Province, magnetic separation with different grinding fineness , different magnetic induction intensity and magnetic with desliming was carried out. The main reason for the low recovery rate of magnetite Magnetite after grinding is the fine grinding size of the raw ore. Finally, the phase analysis results show that the main loss of magnetite Magnetite after grinding is in limonite concentrate. The field low-intensity magnetic separation test of limonite concentrate obtained in the laboratory can obtain magnetite with a yield of about 8%, and the recovery of iron in magnetite can be increased by about 15%. The test results were applied to the field production, and the process flow was improved. The crude concentrate of lignite was drained to the weak magnetic separation for further recovery of magnetite. The final recovery rate of iron in the field magnetite was increased by 7.28%, the total iron recovery rate was increased by 5.11%, and the value of ore per ton was increased by 30.30￥, The comprehensive utilization of resources was realized. At the same time, it has achieved synergy and income generation for enterprises. |
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