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A model for estimating the viscosity of blast furnace slags with optical basicity

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Abstract

Viscosity is an important physical property of blast furnace slags and has a great influence on blast furnace operations. Because of time consumption and difficulties encountered during high temperature experimental measurement, viscosity data are also limited, so a reasonable and accurate estimation model is required to provide the data for controlling and optimizing the blast furnace process. In the present study a viscosity model was proposed for blast furnace slags. In the model the activation energy was calculated by the optical basicity corrected for cations required for the charge compensation of AlO 5−4 , and the temperature dependence was described by the Weymann-Frenkel equation. The estimated viscosity values of the CaO-Al2O3-SiO2, CaO-Al2O3-SiO2-MgO, and CaO-Al2O3-SiO2-MgO-TiO2 systems fit well with experiment data, with the mean deviation less than 25%.

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Authors and Affiliations

  1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China

    Xiao-jun Hu, Guo-hua Zhang, Li-jun Wang & Kuo-chih Chou

  2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Xiao-jun Hu, Zhong-shan Ren, Guo-hua Zhang, Li-jun Wang & Kuo-chih Chou

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  1. Xiao-jun Hu
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  2. Zhong-shan Ren
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  3. Guo-hua Zhang
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  4. Li-jun Wang
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  5. Kuo-chih Chou
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Correspondence to Xiao-jun Hu.

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The work was financially supported by the National Natural Science Foundation of China (No.51090384).

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Hu, Xj., Ren, Zs., Zhang, Gh. et al. A model for estimating the viscosity of blast furnace slags with optical basicity. Int J Miner Metall Mater 19, 1088–1092 (2012). https://doi.org/10.1007/s12613-012-0675-2

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  • DOI: https://doi.org/10.1007/s12613-012-0675-2

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