白云鄂博中贫氧化矿氢基矿相转化—磁选试验研究  

Experimental Study on Hydrogen-based Mineral Phase Transformation-Magnetic Separation of Medium-lean Oxidized Ore in Bayan Obo

作　　者：曾永杰[1] 王星 Zeng Yong-jie;Wang Xing(Baoshan Mining Co.of Baotou Iron&Steel(Group)Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China)

机构地区：[1]包头钢铁(集团)有限责任公司宝山矿业公司,内蒙古包头014010

出　　处：《包钢科技》2023年第1期10-16,共7页Science & Technology of Baotou Steel

摘　　要：白云鄂博中贫氧化矿存量巨大,氧化程度高,杂质含量高,其中铁和稀土为主要回收成分,铁品位为28.74%,FeO含量为1.99%,稀土品位为5.45%,矿石中的铁主要以赤褐铁及磁性铁形式存在,分布率分别为48.54%及43.84%。针对白云鄂博中贫氧化矿开展矿石性质研究,探索回收其中铁资源,采用“预富集—氢基矿相转化—阶段磨矿—阶段磁选”工艺,可以获得铁精矿品位为66.07%、铁总回收率为87.47%的合格铁精矿,该方法有利于铁资源充分利用,提高了矿山资源利用率。The stock of medium-lean oxidized ore in Bayan Obo is huge as well as its degree of oxidation and impurity content are high.Among them,iron and rare earth are the main recovered components.The grade of iron is 28.74%,content of FeO is 1.99%and grade of rare earth is 5.45%.The iron in the ore mainly exists in forms of hematite and limonite and magnetic iron as well as the distribution ratios are 48.54%and 43.84%respectively.The qualified iron concentrate with grade of iron concentrate of 66.07%and gross recovery of iron of 87.47%is obtained by studying the ore properties of medium-lean oxidized ore in Bayan Obo as well as exploring and recycling its iron resource with the process of“preconcentration-hydrogen-based mineral phase transformation-stage grinding-stage magnetic separation”.This method is beneficial to the full utilization of iron resources and improving the utilization rate of mine resources.

关 键 词：中贫氧化矿 氢基矿相转化 提质降杂 

分 类 号：TD951[矿业工程—选矿]