| 优化冬瓜山铜矿磨矿产品粒度组成提高浮选指标研究 |
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| 引用本文： | 杨森,肖庆飞,康怀斌,马帅,张谦,王旭东.优化冬瓜山铜矿磨矿产品粒度组成提高浮选指标研究[J].矿产保护与利用,2020,40(4):70-74. |
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| 作者姓名： | 杨森 肖庆飞 康怀斌 马帅 张谦 王旭东 |
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| 作者单位： | 1.省部共建复杂有色金属资源清洁利用国家重点实验室，云南 昆明 650093 |
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| 基金项目： | 国家自然科学基金;国家重点实验室开放研究项目 |
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| 摘 要： | 针对冬瓜山入浮颗粒粒度较粗且粒度组成分布不合理问题，基于磨矿产品的粒度分布及矿石力学性质对磨矿介质配比进行调整以优化入浮颗粒的粒度组成，结果表明:冬瓜山一段磨矿介质尺寸方案为m（φ60）:m（φ40）:m（φ30）:m（φ25）=40:10:30:20，采用推荐方案可提高磨矿产品中-0.1+0.01 mm颗粒产率2.28%。推荐方案与现场方案磨矿产品经一粗两精两扫的浮选闭路对比试验，推荐方案铜精矿回收率90.11%，较现场方案提高1.34%，精矿品位提高了0.94%。对浮选尾矿筛分并检测分析可知推荐方案磨矿产品在-0.1+0.01 mm颗粒中铜的回收效果优于现场方案，利用推荐的介质配比方案优化磨矿产品粒度组成，有效提高了冬瓜山选铜浮选指标。
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| 关 键 词： | 磨矿 粒度组成 浮选 |
| 收稿时间： | 2020-03-25 |
Research on Optimizing Particle Size Composition of Grinding Products of Dongguashan Copper Mine to Improve Flotation Index |
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| Affiliation: | 1.Provincial and Ministry Jointly Establish National Key Experiments for Clean Utilization of Complex Nonferrous Metal Resources, Kunming 650093, China2.State Key Laboratory of Mineral Processing Science and Technology, Beijing 100070, China3.College of Land and Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China4.Tongling Nonferrous Group Holding Co., Ltd. Dongguashan Copper Mine, Tongling 244031, China |
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| Abstract: | In order to solve the problem of coarse and unreasonable particle size composition distribution in Dongguashan, the particle size composition of floating particles was optimized by adjusting the proportion of grinding medium based on the particle size distribution of grinding products and the dynamics properties of ores. The results showed that the size scheme of one stage of grinding media in Dongguashan is m (φ60):m (φ40):m (φ30):m (φ25) = 40:10:30:20. The yield of -0.1+0.01mm particles in grinding mineral products could be increased by 2.28% used the recommended scheme. Compared with the recommended scheme and the field scheme experienced flotation closed circuit test with one rough and two fine sweeps, the recovery rate of copper concentrate used recommended scheme was 90.11%, which was 1.34% higher than that of the field scheme. And the concentrate grade used recommended scheme was 0.94% higher than that of the field scheme. According to the screening and detection analysis of the flotation tailings, the recovery of copper in -0.1+0.01mm particles of grinding minerals in the recommended scheme was better than that in the field scheme. The recommended medium ratio scheme was used to optimize the particle size composition of grinding minerals, which effectively improved the flotation index of copper in Dongguashan. |
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