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Corrosion Behaviors of Al2O3 and ZrO2 Refractories in Contact with High-Basicity Refining Slag

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11th International Symposium on High-Temperature Metallurgical Processing

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

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Abstract

Al2O3 and ZrO2 refractories are widely used in the steel industry as lining materials for many metallurgical reactors. Since the refractory material is in direct contact with the slag and molten steel, it is susceptible to corrosion and degradation, particularly on the slag line. The corrosion behavior of high-basicity refining slag to refractories was studied in this paper. The results show that Al2O3 refractories would partially dissolve into the slag, and form a transition layer composed of CaAl12O19 and CaAl4O7. For ZrO2 refractories, the slag and the ZrO2 crucible produce a transition layer composed of CaZrO3, CaZr4O9, and Ca6Zr19O44, which prevents the further corrosion of the crucible. The corrosion mechanism was studied by experiments combined with thermodynamic calculations and the establishment of new corrosion models. This study is expected to serve as a guide for the production and industrial application of the refractory materials.

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Author information

Authors and Affiliations

  1. School of Metallurgy and Environment, Central South University, Changsha, People’s Republic of China

    Liwen Xue, Tongsheng Zhang & Wanlin Wang

  2. National Center for International Cooperation of Clean Metallurgy, Changsha, China

    Liwen Xue, Tongsheng Zhang & Wanlin Wang

Authors
  1. Liwen Xue
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  2. Tongsheng Zhang
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  3. Wanlin Wang
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Corresponding author

Correspondence to Tongsheng Zhang .

Editor information

Editors and Affiliations

  1. Central South University, Changsha, China

    Zhiwei Peng

  2. Michigan Technological University, Houghton, MI, USA

    Jiann-Yang Hwang

  3. Montana Technological University, Butte, MT, USA

    Jerome P. Downey

  4. RHI Magnesita, Leoben, Austria

    Dean Gregurek

  5. The University of Queensland, Brisbane, QLD, Australia

    Baojun Zhao

  6. Istanbul Technical University, Istanbul, Turkey

    Onuralp Yücel

  7. Atilim University, Ankara, Turkey

    Ender Keskinkilic

  8. Central South University, Changsha, China

    Tao Jiang

  9. Elkem Carbon AS, Kristiansand, Norway

    Jesse F. White

  10. King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia

    Morsi Mohamed Mahmoud

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Xue, L., Zhang, T., Wang, W. (2020). Corrosion Behaviors of Al2O3 and ZrO2 Refractories in Contact with High-Basicity Refining Slag. In: Peng, Z., et al. 11th International Symposium on High-Temperature Metallurgical Processing. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36540-0_16

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