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金属矿山 ›› 2015, Vol. 44 ›› Issue (03): 191-193.

• 综合利用 • 上一篇    下一篇

某浓密机溢流中极微细粒黄铁矿的浮选回收试验

成岚1,2,李茂林1,2,3,黄光耀3,孙肈淑4   

  1. 1.武汉科技大学资源与环境工程学院,湖北 武汉 430081;2.冶金矿产资源高效利用与造块湖北省重点实验室,湖北 武汉430081;3.长沙矿冶研究院有限责任公司,湖南 长沙 410012;4.中金岭南股份有限公司凡口铅锌矿,广东 韶关 512325
  • 出版日期:2015-03-15 发布日期:2015-07-31

Experiment on Flotation Recovery of an Ultra-fine Pyrite from Overflow of Thickener

Cheng Lan1,2,Li Maolin1,2,3,Huang Guangyao3,Sun Zhaoshu4   

  1. 1.School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430081,China;2.Key Laboratory of Efficient Utilization of Metallurgical Mineral Resources and Agglomeration of Hubei Province,Wuhan 430081,China;3.Changsha Research Institute of Mining and Metallurgy Co.,Ltd.,Changsha 410012,China;4.Fankou Pb-Zn Mine,Zhongjin Linnan Limited Company,Shaoguan 512325,China
  • Online:2015-03-15 Published:2015-07-31

摘要: 某铅锌浮选尾矿浓密机溢流中含有大量的微细粒黄铁矿等,-40、-5 μm粒级产率分别高达99.40%和33.50%,黄铁矿一般小于30 μm,主要呈自形、半自形粒状,解离程度好,94.93%的黄铁矿以单体形式存在,在40~5 μm粒级有明显的富集现象。为了提高资源的利用率,提高企业的经营业绩,减少尾矿库的堆排量并改善尾矿库工艺参数,对微细粒黄铁矿进行了选矿试验研究。结果表明,采用2粗2精、中矿顺序返回流程处理该试样,可获得硫品位为46.90%、回收率为86.64%的硫精矿,试验指标理想,可作为设计依据。

关键词: 极细粒, 黄铁矿, 浮选

Abstract: Thickener overflow of a lead-zinc flotation tailing contain quantities of ultra-fine pyrite with particle size of 99.40% passing 40 μm and 33.50% passing 5 μm.Most of pyrite particles are finer than 30 μm,exists in form of idiomorphism or semidiomorphism granular with sound liberation degree.94.93% of pyrite are monomer and enriched in 40~5 μm grade.To increase the utilization rate of resource,improve the business performance of enterprises,decrease the tailings stockpiling and discharging,and optimize the parameters of tailing pond,flotation experiments of the ultra-fine pyrite were carried out.The results showed that sulfur concentrate with sulfur grade of 46.90% and recovery of 86.64% was obtained through the process of two roughing-two cleaning,and middles back to the flow-sheet in turn.With good flotation index,the process can be as the basis for design.

Key words: Ultrafine, Pyrite, Flotation