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Metal Mine ›› 2012, Vol. 41 ›› Issue (07): 148-150.

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Research on Deep Reduction of Reelection Coarse Concentrate After High Intensity Magnetie Separation of Meishan Iron Tailings

Yang Long1,2,Han Yuexin1,Yuan Zhitao1,Gao Peng1   

  1. 1.College of Resources and Civil Engineering, Northeastern University;2.BaoSteel Group Shanghai Meishan Mining Co.,Ltd.
  • Online:2012-07-15 Published:2012-07-26

Abstract: Iron content of Meishan tailings is relatively high, because of high content of weakly magnetic iron minerals in Meishan iron ore.These tailings were treated by Meishan iron concentrator using high intensity magnetic separation, and re-concentrate with 31.80% iron grade were produced.Then deep reduction was used to treat reelection coarse concentrate.The results show that the reduced materials with metallization rate up to 89.20% was obtained under the optimal deep reduction conditions such as reducing temperature 1 275 ℃, reducing time 60 min, thickness of material 30 mm and carbon coefficient 2.0.Iron powder with a TFe grade 80.05% at an iron recovery 98.03% was achieved after one-stage low intensity magnetic separation.

Key words: Reelection coarse concentration after high intensity magnetic separation, Iron tailings, Deep reduction, Metallization degree