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金属矿山 ›› 2016, Vol. 45 ›› Issue (12): 126-129.

• 矿物工程 • 上一篇    下一篇

大台沟深部矿石工艺矿物学研究

刘双安1,宫贵臣2,刘杰2   

  1. 1.鞍钢集团矿业设计研究院,辽宁 鞍山 114021;2.东北大学资源与土木工程学院,辽宁 沈阳 110819
  • 出版日期:2016-12-15 发布日期:2017-02-16

Process Mineralogy Investigation of a Deep Buried Iron Ore in Dataigou

Liu Shuang′an1,Gong Guichen2,Liu Jie2   

  1. 1.Angang Group Mining Engineering Corporation,Anshan 114021,China;2.College of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China
  • Online:2016-12-15 Published:2017-02-16

摘要: 大台沟铁矿石属石英岩型磁铁矿,矿石铁品位为34.70%,主要有用矿物为磁铁矿,铁在磁铁矿中分布率达81.67%;主要脉石矿物为石英、白云母、绿泥石等。为给该矿石开发利用合理选矿工艺流程确定提供依据,进行了工艺矿物学研究。矿石结构主要为交代结构或交代残余结构、自行结构、半自形—他形结构;矿石构造主要为条带状构造、浸染状构造、致密块状构造。磁铁矿主要以自形、半自形晶粒状赋存于石英、云母等脉石矿物中;赤铁矿常呈交代结构与磁铁矿连生,是后期氧化磁铁矿而成,其单晶少见。磁铁矿原生粒度以微细粒为主,粗细分布不均;整体而言嵌布粒度微细,但基本上都在选矿的可选范围内。

关键词: 工艺矿物学, 结构, 构造, 磁铁矿

Abstract: Dataigou iron ore belongs to quartzite type magnetite.Iron grade of ore is 34.70%,main valuable mineral is magnetite,iron distribution rate in magnetite is 81.67%,main gangue mineral is quartz,muscovite,chlorite,etc.Process mineralogy study was conducted to provide technique basis for rational beneficiation process determination.Main mineral structure is metasomatic structure or metasomatic relict structure,euhedral-granular structure,hypidiomorphic-allotriomorphic structure;While main texture is banded texture,disseminated structure,dense block structure.Magnetite mainly in form of euhedral-granular structure,hypidiomorphic structure in gangue mineral of quartz,mica,etc.Hematite usually confluents with magnetite in metasomatic structure,results from magnetite oxidation in late period,single crystal hematite was few.Magnetite native granularity mainly is microfine or fine grain,distributed unevenly,overall magnetite is finely disseminated,but basically in the range for separation.

Key words: Process mineralogy, Structure, Texture, Magnetite