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金属矿山 ›› 2010, Vol. 39 ›› Issue (07): 75-77.

• 矿物工程 • 上一篇    下一篇

某低品位铁矿石的矿物学特性与选矿试验研究

 吕宪俊, 孙丽君, 杜飞飞   

  1. 山东科技大学
  • 出版日期:2010-07-15 发布日期:2010-11-09

Study on the Mineralogical Property and Mineral Processing of a Low Grade Iron Ore

Lu Xianjun,Sun Lijun,Du Feifei   

  1. Shandong University of Science and Technology
  • Online:2010-07-15 Published:2010-11-09

摘要:  较系统地研究了某低品位铁矿石的矿石性质和选矿工艺。研究结果表明,该矿石为低品位磁铁矿矿石,原矿中TFe含量为27.65%,磁性铁占有率为87.96%;采用阶段磨矿、磁选流程,控制一段磨矿细度-74μm占57.82%,粗精矿再磨细度-74 μm占75.92%,最终精矿TFe品位可以达到67.07%,回收率达到86.05%;采用一段磨矿、磁选—反浮选流程,控制磨矿细度-74 μm占67.56%,精矿品位可以达到66.21%,回收率达到79.97%。

关键词: 低品位铁矿石, 磁选, 反浮选

Abstract: The mineralogical properties and the mineral processing of a low grade iron ore were studied. Results show that the ore is a low grade magnetite ore with a TFe content of 27.65%and a MFe of 87.96%. An iron concentrate with TFe grade of 67.07% and recovery of 86.05% was obtained by the process of stage grinding and stage magnetic separations under the first stage grinding size of -74 μm 57.82% and the second stage grinding size of -74 μm 75.92%. And, the process consisting of one stage grinding, magnetic separation and reverse flotation produced an iron concentrate with the grade of 66.21% and recovery of 79.97% under the grinding size of -74 μm 67.56%.

Key words: Low grade iron ore, Magnetic separation, Reverse flotation