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Effect of Al2O3 and CaO/SiO2 on the Viscosity of Calcium-Silicate–Based Slags Containing 10 Mass Pct MgO

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Abstract

The effect of Al2O3 and CaO/SiO2 on the viscosity of the CaO-SiO2-10 mass pct MgO-Al2O3 slags was studied at fully liquid temperatures of 1773 K (1500 °C) and below. At fixed CaO/SiO2 between 0.8 and 1.3, higher Al2O3 content increased the slag viscosity due to the polymerization of the aluminate structures. At fixed Al2O3 of 15 and 20 mass pct, increasing the CaO/SiO2 from 0.8 to 1.3 resulted in lower viscosity due to the depolymerization of the aluminate structure.

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This study was partially supported by the Brain Korea 21 (BK21) Project at the Division of the Humantronics Information Materials and the National Science Foundation of Korea Project No.2010-8-2150 and 2011-8-0738.

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Author notes

  1. Hyuk Kim (Graduate Student and Senior Research Engineer)

    Present address: Hyundai Steels, Dangjin, 167-32, Korea

Authors and Affiliations

  1. Yonsei University, Seoul, 120-749, Korea

    Hyuk Kim (Graduate Student and Senior Research Engineer)

  2. School of Frontier Sciences, The University of Tokyo, Chiba, 277-8561, Japan

    Hiroyuki Matsuura (Associate Professor) & Fumitaka Tsukihashi (Professor)

  3. School of Metallurgical Science and Engineering, Central South University, Changsha, 410-083, P.R. China

    Wanlin Wang (Professor)

  4. Department of Materials Science and Engineering, Yonsei University, Seoul, 120-749, Korea

    Dong Joon Min (Professor) & Il Sohn (Associate Professor)

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  1. Hyuk Kim
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  2. Hiroyuki Matsuura
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  3. Fumitaka Tsukihashi
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  4. Wanlin Wang
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  5. Dong Joon Min
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  6. Il Sohn
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Correspondence to Il Sohn.

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Manuscript submitted May 13, 2012.

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Kim, H., Matsuura, H., Tsukihashi, F. et al. Effect of Al2O3 and CaO/SiO2 on the Viscosity of Calcium-Silicate–Based Slags Containing 10 Mass Pct MgO. Metall Mater Trans B 44, 5–12 (2013). https://doi.org/10.1007/s11663-012-9759-7

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