Influence of Cr Content in Steel on the Behavior of MgO·Al2O3 Spinel Inclusions During Ladle Treatment by Using Kinetic Reaction Model


MgO·Al2O3 spinel inclusion (from here, “Mg–Al inclusion”) is harmful to the properties of steel products. Many efforts have been made to control the composition of harmful inclusions during ladle treatment where the complex reactions among molten steel, slag, refractory, deoxidation products and alloying elements occur simultaneously. It is well known that the pure Al2O3 inclusion changes to Mg–Al inclusion because of the reaction with Mg content in molten steel. In the present work, in order to predict inclusion evolution from Al2O3 inclusion to Mg–Al inclusion, we have introduced the kinetic model that applies Mg content changes in spinel. By the brushed-up model, the influence of Cr content in steel and slag composition on the behaviors of Mg–Al inclusion has been investigated.

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  1. 1.

    Park J H, and Kang Y, Steel Res Int88 (2017) 1700130.

    Article  Google Scholar 

  2. 2.

    Park J H, and Todoroki H, ISIJ Int50 (2010) 1333.

    CAS  Article  Google Scholar 

  3. 3.

    Todoroki H, Kirihara F, Kanbe Y, and Miyazaki Y, Tetsu-to-Hagané100 (2014) 539.

    CAS  Article  Google Scholar 

  4. 4.

    Nishi T, and Shinme K, Tetsu-to-Hagané84 (1998) 837.

    Article  Google Scholar 

  5. 5.

    Harada A, Matsui A, Nabeshima S, Kikuchi N, and Miki Y, ISIJ Int57 (2017) 1546.

    CAS  Article  Google Scholar 

  6. 6.

    Harada A, Miyano G, Maruoka N, Shibata H, and Kitamura S, ISIJ Int54 (2014) 2230.

    CAS  Article  Google Scholar 

  7. 7.

    Okuyama G, Yamaguchi K, Takeuchi S, and Sorimachi K, ISIJ Int40 (2000) 121.

    CAS  Article  Google Scholar 

  8. 8.

    Park J H, Kim D J, and Song H S, Metall and Mater Trans B33 (2002) 723.

    Article  Google Scholar 

  9. 9.

    Harada A, Maruoka N, Shibata H, and Kitamura S, ISIJ Int53 (2013) 2110.

    CAS  Article  Google Scholar 

  10. 10.

    Ohguchi S, Robertson D G C, Deo B, Grieveson P, and Jeffes J H E, Ironmaking Steelmaking11 (1984) 202.

    CAS  Google Scholar 

  11. 11.

    Kim S-J, Harada A, and Kitamura S, Proc of AISTech 2015 (2015) 3261.

  12. 12.

    Kim J-I, Kim S-J, and Kitamura S, Proc of ICS 2018 (2018) CD-ROM ICS 109.

  13. 13.

    Hino M, and Ito K, Thermodynamic Data For Steelmaking, Tohoku University Press, Sendai (2010) p 10.

    Google Scholar 

  14. 14.

    Factsage(TM), Factsage 7.2, Thermfact and GTT-Technologies, Copyright (C) 1976–2018.

  15. 15.

    Fujii K, Nagasaka T, and Hino M, ISIJ Int40 (2000) 1059.

    CAS  Article  Google Scholar 

  16. 16.

    Liu C, Yagi M, Gao X, Kim S -J, Huang F, Ueda S, and Kitamura S, Metall and Mater Trans B49 (2018) 113.

    CAS  Article  Google Scholar 

  17. 17.

    Shu Q, Volkova O, Lachmann S, and Scheller P, Proc of AISTech 2011 (2011) 537.

    Google Scholar 

  18. 18.

    Kim J -I, and Kim S -J, ISIJ Int60 (2020), 691.

  19. 19.

    Eisenhüttenleute V D, Slag Atlas, 2nd ed., Verlag Stahleisen GmbH, Düsseldorf (1995) p 44.

    Google Scholar 

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The authors would like to thank Prof. Shin-ya Kitamura in Tohoku University for his valuable comments about the kinetic reaction and thermodynamics. This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry and Energy (MOTIE) of the Republic of Korea (No. 20172010106310). And this work was performed under the Cooperative Research Program of “NJRC Mater. & Dev.”

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Correspondence to Sun-Joong Kim.

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Kim, J., Kim, S. Influence of Cr Content in Steel on the Behavior of MgO·Al2O3 Spinel Inclusions During Ladle Treatment by Using Kinetic Reaction Model. Trans Indian Inst Met (2020).

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  • Ladle treatment
  • Coupled reaction
  • MgO·Al2O3 spinel inclusion
  • High-Cr-containing steel