Journal of Northeastern University Natural Science ›› 2017, Vol. 38 ›› Issue (11): 1559-1563.DOI: 10.12068/j.issn.1005-3026.2017.11.009

• Materials & Metallurgy • Previous Articles     Next Articles

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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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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