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金属矿山 ›› 2008, Vol. 38 ›› Issue (08): 36-39.

• 矿物工程 • 上一篇    下一篇

鄂西某鲕状赤铁矿焙烧磁选试验研究

左倩,王一,田赋,杨默涵   

  1. 武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室
  • 收稿日期:2008-06-20 出版日期:2008-08-15 发布日期:2011-07-15
  • 基金资助:

    武汉科技大学大学生科技创新活动项目,指导教师为张芹教授。

Experimental Study on the Beneficiation of an Oolite Iron Ore from Western Hubei by Roasting-Magnetic Separation

Zuo Qian,Wang Yi,Tian Fu,Yang Mohan   

  1. Key Laboratory of Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology
  • Received:2008-06-20 Online:2008-08-15 Published:2011-07-15

摘要: 为开发利用鄂西某宁乡式鲕状赤铁矿(原矿铁品位为43.71%,P含量为0.93%),对其进行了磁化焙烧—弱磁选小型试验。试验结果表明:将-2 mm原矿与煤粉按5∶1的质量比混合,在焙烧温度为750 ℃,保温时间为1 h的条件下焙烧,焙烧矿经过粗粒弱磁选抛尾、细磨至-325目占96%、两次弱磁精选,可获得平均铁品位为60.12%、平均铁回收率(对原矿+煤粉)为77.42%的铁精矿。但铁精矿含磷0.62%,须通过进一步研究使其降低。

关键词: 鲕状赤铁矿, 磁化焙烧, 弱磁选

Abstract: To exploit and utilize an oolite hematite ore of Ningxiang type in western Hubei, a laboratory test of magnetizing roasting-low intensity magnetic separation was carried out for the run-of-mine ore containing 43.71% Fe and 0.93% P. The test result shows that when the -2 mm run-of-mine ore is blended with coal powder in a ratio of five to one, roasted at a temperature of 750 ℃for one hour, treated by low intensity magnetic separation at coarse size to discard the tailings, finely ground to 96% -325 mesh and handled by two cleanings of low intensity magnetic separation, an iron concentrate with an average grade of 60.12% and iron recovery (to run-of-mine ore + coal powder) of 77.42% can be obtained. However, the iron concentrate contains 0.62% P, which should be reduced through further study.

Key words: Oolite hematite, Magnetizing roasting, Low intensity magnetic separation