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Measuring and Modeling of Density for Selected CaO-MgO-Al2O3-SiO2 Slag With Low Silica

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Abstract

The densities of the selected quaternary CaO-MgO-Al2O3-SiO2 slag with low silica were measured by the Archimedean method in a wide temperature range from 1 773 to 1 873 K. Nine different slag compositions were chosen based on three different levels of CaO content and three different levels of SiO2 content. wMgO was equal to 7. 0%. wCaO were varied from 40. 04% to 50. 64%, for wSiO2 = 10. 25%–20. 70%. The effects of temperature, SiO2 content and optical basicity were studied. It is shown that density decreases approximately linearly with an increase in temperature. Under the same CaO content, the density decreases with increasing of SiO2 content, and increases with optical basicity increasing. Based on the experimental data as the boundary of the homogenous phase region predicated by FACTSAGE software, the mass triangle model is used to calculate the density of selected limited homogenous phase region. The results showed that the mass triangle model works well. Key words: density; slag; low silica; optical basicity; model

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Authors and Affiliations

  1. Shanghai Key Laboratory of Modern Metallurgy and Material Processing, Shanghai University, Shanghai, 200072, China

    Ji-fang Xu (Doctor), Jie-yu Zhang, Chang Jie, Lei Tang & Kuo-chih Chou

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

    Kuo-chih Chou

Authors
  1. Ji-fang Xu
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  2. Jie-yu Zhang
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  3. Chang Jie
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  4. Lei Tang
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  5. Kuo-chih Chou
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Correspondence to Ji-fang Xu.

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Foundation Item: Item Sponsored by National Natural Science Foundation of China (50874072); Program for Changjiang Scholars and Innovative Research Team in University of China (IRT0739)

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Xu, Jf., Zhang, Jy., Jie, C. et al. Measuring and Modeling of Density for Selected CaO-MgO-Al2O3-SiO2 Slag With Low Silica. J. Iron Steel Res. Int. 19, 26–32 (2012). https://doi.org/10.1016/S1006-706X(12)60109-5

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  • DOI: https://doi.org/10.1016/S1006-706X(12)60109-5

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