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Theoretical Analyses and Experimental Investigations of Selective Carbothermal Reactions of Vanadium-Bearing Titanomagnetite Concentrates for Preparation of Iron-Based Wear-Resistant Material

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Abstract

Based on FACTSage® software, this paper focuses on the thermodynamic calculations of selective carbothermal reactions of vanadium-bearing titanomagnetite concentrates for preparing iron-based wear-resistant material directly from vanadium-bearing titanomagnetite concentrates. The calculations show that it was most likely to generate metallic iron, titanium carbide and vanadium carbide among all possible carbothermal reactions of vanadium-bearing titanomagnetite concentrates in a vacuum of 10 Pa. The equilibrium composition calculations indicate that Fe3O4 can be reduced to metallic iron by carbon above 400°C, FeTiO3 can be converted into TiC by carbon above 800°C and V2O5 can be converted into VC by carbon above 600°C in a vacuum of 10 Pa. The investigations demonstrated that the percentage of ferrous oxides reduced to metallic iron was about 96%, the conversion percentage of FeTiO3 into TiC was about 75% and the conversion percentage of V2O5 into VC was about 94% after the selective carbothermal reactions of vanadium-bearing titanomagnetite concentrates at 1300°C for 3 h in a vacuum of 10 Pa.

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Acknowledgements

This research is financially supported by the Science and Technology Supporting Program of Sichuan Province in China (No. 2012GZX0089) as well as by the Science and Technology Supporting Program of Deyang County in Sichuan Province of China (No. 2013ZZ073-08). Thanks are also given to Xuewei Lv for his help in calculation based on FACTSage6.2 software.

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The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. School of Manufacturing Science and Engineering, Sichuan University, No. 24 South Sector 1, Yihuan Road, Chengdu, 610065, China

    Guangming Zhang, Keqin Feng & Huifang Yue

  2. Material Engineering Division, Sichuan Engineering Technical College, Deyang, 618000, China

    Guangming Zhang

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  1. Guangming Zhang
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  2. Keqin Feng
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  3. Huifang Yue
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Correspondence to Keqin Feng.

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Zhang, G., Feng, K. & Yue, H. Theoretical Analyses and Experimental Investigations of Selective Carbothermal Reactions of Vanadium-Bearing Titanomagnetite Concentrates for Preparation of Iron-Based Wear-Resistant Material. JOM 68, 2525–2532 (2016). https://doi.org/10.1007/s11837-016-2035-6

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  • DOI: https://doi.org/10.1007/s11837-016-2035-6

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