东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2017, Vol. 38 ›› Issue (11): 1559-1563.DOI: 10.12068/j.issn.1005-3026.2017.11.009

• 材料与冶金 • 上一篇    下一篇

钒钛磁铁矿微波助磨实验

王俊鹏， 姜涛， 刘亚静， 薛向欣   

  1. (东北大学 冶金学院， 辽宁 沈阳110819)
  • 收稿日期:2016-05-19 修回日期:2016-05-19 出版日期:2017-11-15 发布日期:2017-11-13
  • 通讯作者: 王俊鹏
  • 作者简介:王俊鹏(1988-)，男，辽宁沈阳人，东北大学博士研究生; 姜涛(1973-)，男，辽宁本溪人，东北大学教授，博士生导师; 薛向欣(1954-)，男，河北唐山人，东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51574082).

Experiment of Microwave-Assisted Grinding on Vanadium Titano-Magnetite

WANG Jun-peng， JIANG Tao， LIU Ya-jing， XUE Xiang-xin   

  1. School of Metallurgy， Northeastern University， Shenyang 110819， China.
  • Received:2016-05-19 Revised:2016-05-19 Online:2017-11-15 Published:2017-11-13
  • Contact: JIANG Tao
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摘要： 针对我国复杂难处理钒钛磁铁矿资源特点，研究了微波加热对钒钛磁铁矿磨矿性能的影响，揭示了钒钛磁铁矿在微波作用下选择性破碎与界面破碎特性.结果表明:微波场中，矿石的温度随着矿石粒度的增大而增加，且微波功率对矿石升温性能的影响最显著;X射线衍射分析与SEM分析表明，微波预处理后矿石内部会产生大量的晶界裂纹，使更多的单体矿物解离出来;在微波功率为4kW、加热时间100s后的磨矿产物中，小于0.074mm粒级的质量分数由原矿的72%提高到95%.

关键词: 钒钛磁铁矿, 微波, 升温性能, 磨矿, 解离

Abstract: According to the characteristics of the complex hard-processing vanadium titano-magnetite (VTM) resources in China， the influence of microwave irradiation on the grinding of VTM was investigated and the features of selective crushing and boundary cracking of VTM under microwave treatment were revealed. The results showed that the ore temperature increased with the increase of the particle size of VTM and the temperature rising capability of VTM was mostly influenced by microwave power. XRD and SEM analyses indicated that after being pretreated by microwave irradiation， a number of intergranular cracks appeared and more monomer was dissociated in VTM.The mass fraction of particle-size grade less than 0.074mm in the ground product increased from 72% to 95% after being radiated by 4kW microwave for 100s.

Key words: vanadium titano-magnetite, microwave, temperature rising capability, grinding, dissociation

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