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金属矿山 ›› 2010, Vol. 39 ›› Issue (05): 68-72.

• 矿物工程 • 上一篇    下一篇

高磷赤铁矿生物质磁化脱磷焙烧—磁选试验研究

徐頔1,2, 朱国才1, 池汝安2, 赵玉娜1, 袁硕1   

  1. 1.清华大学;2.武汉工程大学
  • 出版日期:2010-05-15 发布日期:2010-11-09

Investigation on Dephosphorization and Magnetic Separation of  High Phosphorous Iron Ore by Biomass Reduction Roasting

Xu Di1,2,Zhu Guocai1,Chi Ru'an2,Zhao Yuna1,Yuan Shuo1   

  1. 1.Institute of Nuclear and New Energy Technology,Tsinghua University; 2.Key Lab.for Green Chemical Process of Ministry Education,Wuhan Institute of Technology
  • Online:2010-05-15 Published:2010-11-09

摘要: 采用生物质还原焙烧的方法实现鄂西某髙磷赤铁矿磁性转化并有效脱磷,再通过动态磁选的方法回收铁精矿。研究确定了生物质用量、焙烧时间、焙烧温度等条件对赤铁矿的磁转化率及脱磷率的影响,并确定了磁选转速、磁选时间等选矿参数。结果表明当生物质用量为铁矿的20%,焙烧温度为650 ℃,焙烧时间为40 min,动态磁选转速为600 r/min,磁选时间为40 min时,铁品位达到64.05%,脱磷率达到65.64%。

关键词: 髙磷赤铁矿, 脱磷, 生物质, 动态磁选

Abstract: Magnetic conversion process was investigated by biomass reduction roasting and the phosphorus in ore was removed successfully of a Hubei western high phosphorous hematite ore,The iron grade was improved greatly by further dynamic magnetic method.The effects of technological conditions such as roasting temperature,roasting time,the ratio of hematite and biomass on magnetic conversion rate of hematite ore and dephosphorization rate were investigated.The magnetic separation conditions such as stirring speed and magnetic separation time were investigated too.Iron grade could reach more than 64.05%,dephosphorization rate reach more than65.64% under the optimal condition which was determined as the amount of biomass at 20%,roasting temperature at 650 ℃ for 40 min,stirring speed at 600 r/min for 40 min.

Key words: High phosphorous hematite ore, Dephosphorization, Biomass, Dynamic magnetic