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| Study on flotation recovery technology of a refractory Carlin-type gold ore |
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Received:December 23, 2023
Revised:January 07, 2024
Accepted:February 05, 2024
Published Online:March 24, 2025
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| DOI： |
| KeyWord:Carlin-type;gold ore,deep;dispersion depression, activation;synergism,flotation;at different;velocity,synergistic;effect,without;desliming |
| Author | Institution |
| Liu Wanfeng |
BGRIMM Technology Group,State Key Laboratory of Mineral Processing Science and Technology |
| Wang Xuewen |
BGRIMM Technology Group,State Key Laboratory of Mineral Processing Science and Technology |
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| Abstract: |
| Flotation of Carlin-type gold ore is one of the difficulties in beneficiation and also one of the research hotspots. A gold deposit belongs to Carlin-type gold deposit with complex ore properties, subsieve disseminated gold, high content of carbonate minerals, clay minerals and carbonaceous minerals, poor floatability of gold-bearing minerals, and extremely difficulty in recovering gold. Starting from the key technical challenges that seriously affect flotation indicators, such as high content of gangue slime that is difficult to suppress, subsieve disseminated gold, and large differences in floatability of gold bearing minerals, this study adopts deep dispersion depression - activation synergism- flotation at different velocity, and utilizes the synergistic effect of collector to effectively reduce the circulating load of middling ore and realize efficient separation and recovery of gold minerals. A gold concentrate with a gold grade of 24.61g·t-1 and a gold recovery rate of 80.42% can be obtained by the flotation closed-circuit test. After adopting this technology, there is without pre-desliming, which solves the double problems of low gold grade and gold recovery in the past , reduces the operation process, and provides technical support for solving the recovery of sluggish gold resources. |
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