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金属矿山 ›› 2016, Vol. 45 ›› Issue (12): 82-85.

• 矿物工程 • 上一篇    下一篇

鞍千极贫赤铁矿石强磁预选试验

祝昕冉1,徐冬林2,高鹏1,李艳军1,韩跃新1   

  1. 1.东北大学资源与土木工程学院,辽宁 沈阳 110819;2.鞍钢集团鞍千矿业责任有限公司,辽宁 鞍山 114043
  • 出版日期:2016-12-15 发布日期:2017-02-16
  • 基金资助:

    基金项目:“十二五”国家科技支撑计划项目(编号:2015BAB15B02)。

High-Intensity Magnetic Pre-separation Experiment on Extremely Lean Hematite Ore from Anqian

Zhu Xinran1,Xu Donglin2,Gao Peng1,Li Yanjun1,Han Yuexin1   

  1. 1.College of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China;2.Anqian Mining Co.,Ltd.,Anshan Iron and Steel Group,Anshan 114043,China
  • Online:2016-12-15 Published:2017-02-16

摘要: 鞍千极贫赤铁矿石铁品位为19.34%,铁主要以赤铁矿形式存在,铁在赤铁矿中分布率为89.90%。为开发利用该矿石,进行了强磁预选试验,考察了介质棒直径、介质棒间隙和磁场强度对预选指标的影响。结果表明,在给料粒度为-3 mm、磁场强度为232.67kA/m、介质棒直径为3mm、介质棒间隙为5mm条件下,可获得铁品位为25.07%、回收率为85.99%的预选精矿,抛除产率为31.08%、铁品位为9.06%的尾矿。试验结果可以为我国极贫赤铁矿的高效开发利用提供参考。

关键词: 极贫赤铁矿石, 强磁预选, 磁介质

Abstract: There is 19.34% Fe in an extremely lean hematite ore from Anqian,iron mainly exists in form of hematite,with distribution rate of 89.90%.To develop and utilize the ore,high-intensity pre-separation experiment was carried out,influence of medium rob diameter,medium rob gap and magnetic field intensity on pre-separation index were investigated.Results indicated that,with feeding size of -3 mm,magnetic field intensity of 232.67 kA/m,medium rob diameter of 3mm,medium rob gap of 5 mm,pre-concentrate with iron grade of 25.07% and recovery of 85.99% was obtained,and discarding tailings with yield rate of 31.08% and iron grade of 9.06%.The results can provide reference for high efficient development of extremely lean hematite ore in our country.

Key words: Extremely lean hematite ore, High-intensity magnetic pre-separatiom, Magnetic medium