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Optimization of BF Slag for High Cr2O3 Vanadium-titanium Magnetite

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Abstract

In order to clarify the slag system of high Cr2O3 vanadium-titanium magnetite smelting in BF (blast furnace), the melting properties of slag samples prepared by analyticaly pure reagents were measured. By means of orthogonal test synthetic weighted score method, the optimal slag for high Cr2 O3 vanadium-titanium magnetite was obtained, which contained 10% MgO, 8% TiO2 and 15% Al2O3, with the binary basicity being 1.15. In addition, the effects of basicity, MgO, TiO2 and Al2O3 on slag melting properties were investigated by single factor test, and the results showed that, with increasing the basicity or TiO2 content, melting temperature (Tm) increased, whereas initial viscosity (η0) and highGtemperature viscosity (ηh) decreased. With increasing the MgO content, Tm decreased firstly and then increased. With increasing the Al2O3 content, Tm increased, and η0 and ηh decreased firstly and then increased.

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Authors and Affiliations

  1. School of Material and Metalurgy, Northeastern University, 110819, Shenyang, Liaoning, China

    Yong Zhang (Doctor), Jue Tang, Man-sheng Chu (Doctor, Professor), Yang Liu, Shuang-yin Chen & Xiang-xin Xue

Authors
  1. Yong Zhang
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  2. Jue Tang
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  3. Man-sheng Chu
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  4. Yang Liu
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  5. Shuang-yin Chen
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  6. Xiang-xin Xue
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Corresponding authors

Correspondence to Yong Zhang or Man-sheng Chu.

Additional information

Foundation Item: Item Sponsored by National Natural Science Foundation of China (51090384); National High Technology Research and Development Program (863 Program) of China (2012AA062302, 2012AA062304); Fundamental Research Funds for the Central Universities of China (N110202001)

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Zhang, Y., Tang, J., Chu, Ms. et al. Optimization of BF Slag for High Cr2O3 Vanadium-titanium Magnetite. J. Iron Steel Res. Int. 21, 144–150 (2014). https://doi.org/10.1016/S1006-706X(14)60023-6

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  • DOI: https://doi.org/10.1016/S1006-706X(14)60023-6

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