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Theoretical and Experimental Research on the Mass Changes of Elements in Molten Steel with CO2 Used as RH Lifting Gas

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Book cover Energy Technology 2020: Recycling, Carbon Dioxide Management, and Other Technologies

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

Abstract

CO2 injection into RH as lifting gas was recently proposed instead of Ar. In this study, FactSage software was used for calculating the mass changes of elements in thermodynamic equilibrium with CO2 injection under vacuum condition. Compared with Ar, CO2 as RH lifting gas can be used for a small amount of decarburization without a significant increase in oxygen content of molten steel. And the carbon content of alloys can be theoretically increased by more than 12% if all CO2 participates in the reaction between CO2 and [C]. Furthermore, the industrial application research of CO2 injection into RH as lifting gas was carried out in a commercial 150t RH. The results agreed with the above theoretical trends. And the problem of aluminum loss can be solved by reducing the additive amount of aluminum alloy in the ladle furnace (LF) and replenishing the aluminum during the RH refining later stage.

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Author information

Authors and Affiliations

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

    Baochen Han, Rong Zhu, Guangsheng Wei, Chao Feng & Jianfeng Dong

  2. Beijing Key Laboratory of Research Center of Special Melting and Preparation of High-End Metal Materials, University of Science and Technology, Beijing, Beijing, 100083, China

    Baochen Han, Rong Zhu & Guangsheng Wei

Authors
  1. Baochen Han
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  2. Rong Zhu
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  3. Guangsheng Wei
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  4. Chao Feng
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  5. Jianfeng Dong
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Corresponding author

Correspondence to Baochen Han .

Editor information

Editors and Affiliations

  1. Royal Melbourne Institute of Technology, Melbourne, VIC, Australia

    Xiaobo Chen

  2. Griffith University, Queensland, Australia

    Yulin Zhong

  3. University of Alaska, Fairbanks, AK, USA

    Lei Zhang

  4. Purdue University, West Lafayette, IN, USA

    John A. Howarter

  5. University of Ilorin, Ilorin, Nigeria

    Alafara Abdullahi Baba

  6. Northeastern University, Shenyang, China

    Cong Wang

  7. Queensland University of Technology, Brisbane, QLD, Australia

    Ziqi Sun

  8. ArcelorMittal Global R&D, Schererville, IN, USA

    Mingming Zhang

  9. Massachusetts Institute of Technology, Cambridge, MA, USA

    Elsa Olivetti

  10. The Ohio State University, Columbus, OH, USA

    Alan Luo

  11. Worcester Polytechnic Institute, Worcester, MA, USA

    Adam Powell

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© 2020 The Minerals, Metals & Materials Society

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Han, B., Zhu, R., Wei, G., Feng, C., Dong, J. (2020). Theoretical and Experimental Research on the Mass Changes of Elements in Molten Steel with CO2 Used as RH Lifting Gas. In: Chen, X., et al. Energy Technology 2020: Recycling, Carbon Dioxide Management, and Other Technologies. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36830-2_10

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