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Comparison of Dissolution Kinetics of Nonmetallic Inclusions in Steelmaking Slag

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Advanced Real Time Imaging II

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

Nonmetallic oxide inclusions of Al2O3, Al2TiO5, and CaO · 2Al2O3 (CA2) types are responsible for clogging of ceramic nozzles during liquid steel processing. The dissolution of these inclusions in steelmaking slags alleviates the clogging phenomenon. The in situ dissolution behavior a single oxide particle is studied in a synthetic CaO–Al2O3–SiO2 type slag using a high-temperature confocal scanning laser microscope at 1550 °C. The rate determining step for Al2O3 and CA2 inclusions was confirmed to be mass transport control in slag. The rate determining step for dissolution of Al2TiO5 needs further investigation. The rate of dissolution varied in the order from slowest to fastest: Al2O3 < CA2 < Al2TiO5.

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Author information

Authors and Affiliations

  1. Steel Research Center, McMaster University, Hamilton, ON, L8S 4L7, Canada

    Mukesh Sharma & Neslihan Dogan

Authors
  1. Mukesh Sharma
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  2. Neslihan Dogan
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Corresponding author

Correspondence to Mukesh Sharma .

Editor information

Editors and Affiliations

  1. National Energy Technology Laboratory/Leidos, Albany, OR, USA

    Jinichiro Nakano

  2. Carnegie Mellon University, Pittsburgh, PA, USA

    P Chris Pistorius

  3. The University of Kansas, Lawrence, KS, USA

    Candan Tamerler

  4. Kyoto University, Kyoto, Japan

    Hideyuki Yasuda

  5. South University of Science and Technology, Shenzhen, China

    Zuotai Zhang

  6. McMaster University, Hamilton, ON, Canada

    Neslihan Dogan

  7. Central South University, Changsha, Hunan, China

    Wanlin Wang

  8. Kyushu University, Fukuoka, Japan

    Noritaka Saito

  9. Carnegie Mellon University, Pittsburgh, PA, USA

    Bryan Webler

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© 2019 The Minerals, Metals & Materials Society

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Sharma, M., Dogan, N. (2019). Comparison of Dissolution Kinetics of Nonmetallic Inclusions in Steelmaking Slag. In: Nakano, J., et al. Advanced Real Time Imaging II. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-06143-2_12

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