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Metal Mine ›› 2008, Vol. 38 ›› Issue (07): 148-151.

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Experimental Study on Beneficiation of a Low Grade Refractory Iron Ore from Hebei

Gan Yonggang1,Song Yongsheng2,Li Wenjuan2   

  1. 1.Zijin Mining Co., Ltd.;2.General Research Institute of Nonmetals
  • Received:2008-05-30 Online:2008-07-15 Published:2011-07-16

Abstract: Experiment study was made on the beneficiation of a low grade refractory iron ore from Hebei.The results show that a comprehensive concentrate grading over 60.00% at an iron recovery of 35.00%(a corresponding magnetic iron recovery of 52.47%)can be obtained by a process composed of tailing pre-discarding from ROM ore(-12 mm), two stage grinding and two stage magnetic separation, centralized classification, re-grinding and several cleanings of the roughing concentrates and dewatering, classification, regrinding and re-concentration of the middling. A final iron concentrate grading over 65.00% can be gained through a further classification of the comprehensive concentrate.

Key words: Magnetite and hematite, Waste pre-discarding, Magnetic separation, Staged grinding and staged concentration