欢迎访问《金属矿山》杂志官方网站,今天是 分享到:
×

扫码分享

金属矿山 ›› 2010, Vol. 39 ›› Issue (06): 73-76.

• 矿物工程 • 上一篇    下一篇

某难选铁矿石煤基直接还原—磁选试验研究

秦晓萌1, 肖永忠2, 孙体昌1, 蒋曼1, 徐承炎1, 王珍1   

  1. 1.北京科技大学;2.湖南华菱涟源钢铁有限公司
  • 出版日期:2010-06-15 发布日期:2010-11-09

Experiments on the Coal-based Direct Reduction-Magnetic Separation of a Refractory Iron Ore

Qin Xiaomeng1,Xiao Yongzhong2,Sun Tichang1,Jiang Man1,Xu Chengyan1,Wang Zhen1   

  1. 1.University of Science and Technology Beijing;2.Hunan Hualing Lianyuan Iron & Steel Co.
  • Online:2010-06-15 Published:2010-11-09

摘要: 某难选铁矿石属“江口式”微细粒嵌布混合型铁矿石。对该矿石进行了煤基直接还原—磁选试验研究,结果表明,以30%的烟煤为还原剂,15%的NM为助熔剂,将矿石在1 250 ℃的温度下直接还原焙烧80 min,焙烧矿经两段阶段磨矿—阶段磁选,可获得铁品位为91.93%,铁回收率为83.87%的直接还原铁产品。

关键词: 难选铁矿石, 煤基直接还原, 磁选

Abstract: In this paper, coal-based direct reduction &magnetic separation were studied on the refractory iron ore which belongs to the “Jiangkou-type” fine disseminated and mixed types iron minerals.The results showed the direct-reduction iron ores grading at 91.93% with an 83.87% recovery was obtained from the roasted ores by two-stage grinding and stage magnetic separation process when the bituminous coal of 30% is used as the reducing agent, NM 15% as the fluxing agent at the roasting temperature of 1 250 ℃ for 80 min.

Key words: Refractory iron ore, Coal-based direct reduction, Magnetic Separation