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现代矿业 ›› 2012, Vol. 28 ›› Issue (02): 17-21.

• 采选工程 • 上一篇    下一篇

马钢南山矿区低品位铁矿石利用技术研究

李俊宁   

  1. 中钢集团马鞍山矿山研究院有限公司
  • 出版日期:2012-02-16 发布日期:2012-02-22

Technical Research on the Application of Low Grade Iron Ores from Masteel Nanshan Mine Area

Li Junning   

  1. Sinosteel Maanshan Institute of Mining Research Co.,Ltd
  • Online:2012-02-16 Published:2012-02-22

摘要: 对马钢南山矿区低品位铁矿石,采用高压辊磨闭路超细碎技术,组合高压辊磨机与湿式粗粒磁选机,将破碎粒度从常规三段一闭路-20 mm降至-3 mm,实现了“多碎少磨、节能降耗”的选矿理念。采用的高压辊磨机超细碎、湿式分级、粗粒磁选预选抛废工艺,是低品位铁矿石选矿技术的重大突破。预选粗精矿用阶段磨选、高效磁选设备选别,在原矿入选铁品位降低的情况下,仍然可获高品质的铁精矿。

关键词: 低品位铁矿石, 高压辊磨机, 超细碎, 湿式分级, 粗粒预选

Abstract: Sinosteel Maanshan Institute of Mining Research Co.,Ltd To the low grade iron ores from masteel nanshan mine area, taking completed Ultra-fine crushing circuit flow sheet with high pressure grinding roll, composed of high pressure grinding roll and wet-rough magnetic machine, can decrease the crushing size from -20 mm to -3 mm, realize the dressing idea of "more crushing and less grinding, energy-saving and cost-reducing". Ultra-fine with high pressure grinding roll, wet classification, pre-selecting rough particle size and discarding waste are important breakthrough to low grade iron ores. Pre-election of rough concentrate with staged grinding, using high efficient magnetic machines can get high grade iron concentrate even though the grade of feed ores are low.

Key words: Low grade iron ores, Ultra-fine, High pressure grinding roll, Wet classification, Pre-election of rough particle size