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金属矿山 ›› 2008, Vol. 38 ›› Issue (07): 148-151.

• 综合利用 • 上一篇    下一篇

河北某低品位难处理铁矿选矿试验研究

甘永刚1,宋永胜2,李文娟2   

  1. 1.紫金矿业集团股份有限公司;2.北京有色金属研究总院
  • 收稿日期:2008-05-30 出版日期:2008-07-15 发布日期:2011-07-16

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

摘要: 针对河北某低品位难处理铁矿进行了选矿试验研究。结果表明,采用原矿(-12 mm)预先抛废、二段磨矿、二次磁选、粗精集中分级再磨多次精选、中矿先脱泥沉砂分级再磨再选,可获得含铁6000%以上、回收率35.00%(对磁性铁回收率52.47%)的总精矿。将总精矿进一步分级,最终可获得含铁65%以上的铁精矿。

关键词: 磁赤铁矿, 预先抛废, 阶段磨矿阶段选别, 磁选

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