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现代矿业 ›› 2012, Vol. 28 ›› Issue (05): 14-16.

• 采选工程 • 上一篇    下一篇

低品位褐铁矿制粒—气基磁化焙烧研究

黄柱成,田仕友,姜涛   

  1. 中南大学资源加工与生物工程学院
  • 出版日期:2012-05-15 发布日期:2012-05-31

Study on Granulation—Gas Based Magnetic Roasting Technology for Low Grade Limonite

Huang Zhucheng,Tian Shiyou,Jiang Tao   

  1. School of Resources Processing and Bioengineering, Central South University
  • Online:2012-05-15 Published:2012-05-31

摘要: 针对某铁品位为30.16%低品位褐铁矿,采用制粒—气基磁化焙烧—磁选工艺进行了试验研究。结果表明,对小球粒度为5~2 mm,混合气体CO、CO2、N2体积比为1∶2∶2,磁化焙烧料层厚度200 mm,焙烧温度为725 ℃,保温时间为10 min的磁化焙烧产品进行磨选试验,在磨矿细度为-0.074 mm占85%、弱磁选磁场强度为100 kA/m情况下,可以获得铁品位为59.78%、铁回收率达86.19%的弱磁精矿。  

关键词: 褐铁矿, 气基, 磁化焙烧

Abstract: For a low grade limonite iron(30.16%), Experimental study adopted Granulation—Gas based Magnetic Roasting—Magnetic separation Technology. Magnetization roasting conditions: ball grain for 5~2 mm, mixed gas CO, and CO2, and N2 volume than for 1∶2∶2, magnetization roasting material layer thickness for 200 mm, roasting temperature for 725 ℃, insulation time for 10 min. Magnetic Sorting criteria: grinding fineness to -0.074 mm for 85%, weak magnetic field strength for 100 kA/m.Iron grade 59.78% and recovery 86.19% concentrate can be received.

Key words: limonite, Gas based, Magnetic Roasting