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金属矿山 ›› 2012, Vol. 41 ›› Issue (11): 67-69.

• 矿物工程 • 上一篇    下一篇

山东某铁矿选矿试验

卢丽珍1,魏佳佳1,冯晓燕2   

  1. 1.河南金源黄金矿业有限责任公司;2.北京东方远航技术有限公司
  • 出版日期:2012-11-15 发布日期:2012-11-27

Experimental Research on Mineral Processing of an Iron Ore in Shandong

Lu Lizhen1,Wei Jiajia1,Feng Xiaoyan2   

  1. 1.Henan Jinyuan Gold Mining Co.,Ltd.;2.Beijing Orient Sailing Technology Co.,Ltd.
  • Online:2012-11-15 Published:2012-11-27

摘要: 山东某低铁高硅含硫铁矿石中各矿物嵌布粒度差异较大,磁铁矿、赤褐铁矿含量相当,赤褐铁矿与石英嵌布关系较复杂,属典型的难选铁矿石。试验研究表明,磨矿—脱硫浮选—弱磁选—弱磁尾再磨—强磁选—强磁精矿脱硅反浮选流程是处理该矿石的高效流程,最终获得了铁品位为65.26%、含硫0.18%、含SiO2 5.41%、铁回收率为82.99%的铁精矿,以及含硫25.56%、硫回收率为68.89%的硫精矿。

关键词: 低铁高硅含硫铁矿石, 嵌布粒度, 脱硫浮选, 反浮选脱硅

Abstract: The dissemination sizes of different minerals in sulfur-bearing low-grade iron ore with high content of silicon in Shandong is greatly different. The content of magnetite is the same to that of hematite (limonite). Hematite (limonite) is closely disseminated with quartz. This kind of ore is hard to treat. The test shows that it is efficient to treat this kind of ore by the flow sheet of grinding-flotation to remove sulfur-low-intensity magnetic separation-regrinding of tailings from low-intensity magnetic separation-high-intensity magnetic separation-reverse flotation of concentrate from high-intensity magnetic separation to remove silicon.The final iron concentrate contains 65.26%Fe,0.18% S,5.41% SiO2 with a recovery of 82.99%,and the sulfur concentrate contains 25.56% S with a recovery of 68.89%.

Key words: Sulfur-bearing low-grade iron ore with high content of silicon, Dissemination size, Flotation to remove sulfur, Reverse flotation to remove silicon