Reduction behavior and kinetics of vanadium–titanium sinters under high potential oxygen enriched pulverized coal injection

  • Jin-fang Ma
  • Guang-wei Wang
  • Jian-liang Zhang
  • Xin-yu Li
  • Zheng-jian Liu
  • Ke-xin Jiao
  • Jian Guo
Open Access


In this work, the reduction behavior of vanadium–titanium sinters was studied under five different sets of conditions of pulverized coal injection with oxygen enrichment. The modified random pore model was established to analyze the reduction kinetics. The results show that the reduction rate of sinters was accelerated by an increase of CO and H2 contents. Meanwhile, with the increase in CO and H2 contents, the increasing range of the medium reduction index (MRE) of sinters decreased. The increasing oxygen enrichment ratio played a diminishing role in improving the reduction behavior of the sinters. The reducing process kinetic parameters were solved using the modified random role model. The results indicated that, with increasing oxygen enrichment, the contents of CO and H2 in the reducing gas increased. The reduction activation energy of the sinters decreased to between 20.4 and 23.2 kJ/mol.


ore reduction sintering oxygen enrichment pulverized coal injection kinetic models 



This work was financially supported by the Fundamental Research Funds for Central Universities (FRF-TP-15-063A1).


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© The Author(s) 2017

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • Jin-fang Ma
    • 1
  • Guang-wei Wang
    • 1
  • Jian-liang Zhang
    • 1
  • Xin-yu Li
    • 2
  • Zheng-jian Liu
    • 1
  • Ke-xin Jiao
    • 1
  • Jian Guo
    • 1
  1. 1.School of Metallurgical and Ecological EngineeringUniversity of Science and Technology BeijingBeijingChina
  2. 2.Plans and Operations DepartmentWanbao Mining Ltd.BeijingChina

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