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Study of the High Temperature Metallurgical Properties of On-Site Samples with Vanadium–Titanium Magnetite

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Abstract

In China, two typical vanadium–titanium magnetite ores were used as raw materials in iron making. In order to obtain the differences in the high temperature metallurgical properties of these ores, the phase and microstructure of on-site sinter, pellet, slag and laboratorial non-dripped slag were analyzed by XRD and SEM–EDS. The results show that the phases of two typical sinter and pellet have no significant changes, but the microstructures are different. The softening start temperature and softening zone of high chromium vanadium–titanium magnetite (HCVTM) burden are higher than ordinary vanadium–titanium magnetite (VTM) burden. The melting start temperature of HCVTM burden is higher and melting–dripping zone is smaller than VTM burden, which is beneficial to the blast furnace smelting. In addition, the calculation results using Factsage 7.0 are in accord with the experimental results. The primary crystal field of slag of HCVTM is the melilite, and the liquidus temperature is 1409.81 °C; the primary crystal field of slag of VTM is CaTiO3, and the liquidus temperature is 1418.51 °C.

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Acknowledgements

This work was supported by the National Project Support Program of China under Grant number 2015BAB19B02; 973 Program under Grant number 2013CB632603.

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Authors and Affiliations

  1. School of Metallurgy, Institute of Resources and Environmental, Northeastern University, Shenyang, China

    Zhanwei He, Hongrui Yue & Xiangxin Xue

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  1. Zhanwei He
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  2. Hongrui Yue
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  3. Xiangxin Xue
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Correspondence to Zhanwei He.

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He, Z., Yue, H. & Xue, X. Study of the High Temperature Metallurgical Properties of On-Site Samples with Vanadium–Titanium Magnetite. Trans Indian Inst Met 71, 2001–2013 (2018). https://doi.org/10.1007/s12666-018-1333-9

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  • DOI: https://doi.org/10.1007/s12666-018-1333-9

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