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Effects of CeO2 on Melting Temperature, Viscosity and Structure of Mold Fluxes for Casting Rare Earths Alloyed Steels

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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

Effects of CeO2 on melting temperature , viscosity and structure of mold fluxes for the continuous casting of rare earths alloyed heavy railway steels were studied. Results showed that the melting temperature of mold fluxes with 0, 4, 8 and 12 wt% CeO2 contents were 1066, 1088, 1090 and 1102 °C, respectively. Moreover, the viscosity values at 1300 °C were 0.40, 0.38 and 0.34 Pa s, but the viscosity of slags with 12 wt% CeO2 could not be measured because slags were solid. Therefore, the viscosity at 1300 °C decreased with the increasing of CeO2 contents, although the melting temperature increased. Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) confirmed that CeO2 enhanced the de-polymerization of mold fluxes, and the relative percentage content of O2− in melts increased, leading to the viscosity decrease at 1300 °C.

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Acknowledgements

This work was supported by National Natural Science Foundation of China (Grant No. 51774024).

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Authors and Affiliations

  1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Zeyun Cai, Bo Song, Longfei Li & Zhen Liu

Authors
  1. Zeyun Cai
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  2. Bo Song
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  3. Longfei Li
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  4. Zhen Liu
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Corresponding author

Correspondence to Bo Song .

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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Cai, Z., Song, B., Li, L., Liu, Z. (2019). Effects of CeO2 on Melting Temperature, Viscosity and Structure of Mold Fluxes for Casting Rare Earths Alloyed Steels. 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_36

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