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现代矿业 ›› 2013, Vol. 29 ›› Issue (03): 15-18.

• 采选工程 • 上一篇    下一篇

纳米比亚某铁矿选矿试验研究

李艳军,陈波   

  1. 东北大学资源与土木工程学院
  • 出版日期:2013-03-15 发布日期:2013-04-16

Experimental Research on Mineral Processing of an Iron Ore from Namibia

Li Yanjun,Chen Bo   

  1. College of Resources and Civil Engineering, Northeastern University
  • Online:2013-03-15 Published:2013-04-16

摘要: 针对纳米比亚某铁矿嵌布粒度极细的特点,采用磨矿—弱磁选流程和磨矿—预选抛尾—再磨—弱磁选流程对该矿进行了选矿试验研究。在原矿TFe品位23.63%条件下,前者获得品位66.56%、回收率47.56%的铁精矿;后者可获得品位66.38%、回收率51.44%的铁精矿。两流程相比,铁精矿指标相近,但后者可减少占原矿41.85%的二段磨矿量,故将其作为推荐流程。

关键词: 细磨, 磁铁矿, 磁选, 预选抛尾

Abstract: In allusion to micro-fine disseminated iron ore from Namibia, beneficiation tests of grinding-low intensity magnetic separation and grinding-pre-discarding tailings-regrinding-low intensity magnetic separation were carried out. For this run-of-mine ore with a TFe grade of 23.63%, TFe grade and recovery of 66.56% and 47.56% was obtained in the former test flow, and TFe grade and recovery of 66.38% and 51.44% was obtained in the latter test flow. Contrasting the two beneficiation flow sheets, index of concentrates is similar, but the latter can reduce 41.85% of the regrinding of the crude ore, so it is taken as recommended beneficiation flow sheet.

Key words: Fine grinding, Magnetite, Magnetic separation, Pre-discarding tailings