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Influence of Mould Slag Compositions with Different Reactivity on the Erosion Rate of ZrO2-C Bearing Submergence Entry Nozzle

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10th International Symposium on High-Temperature Metallurgical Processing

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

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Abstract

Several slag compositions of differing reactivity were designed as a potential measure for reducing erosion on submergence entry nozzle during continuous casting of high-Mn high-Al steel . Reactivities were determined according to the SiO2 content of the slag considering the reaction between [Al] and (SiO2) at the steel –slag interface. The erosion rate was evaluated by means of the rotating cylinder method; a ZrO2-C rod was immersed in the 1673 K slag sample for two hours, and the erosion rate was evaluated according to the reduction of rod diameter. The effect of slag components Na2O, Li2O, CaF2 and B2O3 on the erosion rate was investigated. The main results indicate that slag with low SiO2 content was more effective in decreasing the erosion rate than conventional high-SiO2 slag. Listed in decreasing order of intensity, the effects of the individual components on the erosion rate are Na2O, CaF2, Li2O and B2O3. The ultimate aim of the mould slag optimization effort is stabilizing the operation by extending the submergence entry nozzle service life.

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Acknowledgements

This work was supported by the Key Program of National Science Foundation of China (No. U1660204).

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Authors and Affiliations

  1. College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China

    Xue-Si Wang, Qian Wang, Chang-Ping Zeng & Hua-Zhi Yuan

Authors
  1. Xue-Si Wang
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  2. Qian Wang
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  3. Chang-Ping Zeng
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  4. Hua-Zhi Yuan
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Corresponding author

Correspondence to Qian Wang .

Editor information

Editors and Affiliations

  1. Central South University, Changsha, China

    Tao Jiang

  2. Michigan Technological University, Houghton, MI, USA

    Jiann-Yang Hwang

  3. RHI Magnesita, Leoben, Austria

    Dean Gregurek

  4. Central South University, Changsha, China

    Zhiwei Peng

  5. Montana Tech, Butte, MT, USA

    Jerome P. Downey

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

    Baojun Zhao

  7. Istanbul Technical University, Istanbul, Turkey

    Onuralp Yücel

  8. Atilim University, Ankara, Turkey

    Ender Keskinkilic

  9. University of Concepción, Concepción, Chile

    Rafael Padilla

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© 2019 The Minerals, Metals & Materials Society

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Wang, XS., Wang, Q., Zeng, CP., Yuan, HZ. (2019). Influence of Mould Slag Compositions with Different Reactivity on the Erosion Rate of ZrO2-C Bearing Submergence Entry Nozzle. In: Jiang, T., et al. 10th International Symposium on High-Temperature Metallurgical Processing. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05955-2_13

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