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Detachment Mechanism of Inclusions From the Interface Between Molten Steel and Slag

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Abstract

Detachment of inclusions from the steel–slag interface is investigated by considering the meniscus around inclusions. A detailed theoretical model based on the capillary theory of flotation is summarized to judge the detachment conditions, and closed-form analytical expressions for the detachment work and the critical detachment velocity are obtained. Coupled with the local flow field, the detachment probability is formulated as functions of the time–averaged velocity and turbulent kinetic energy.

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Acknowledgments

The authors are grateful for support from the National Natural Science Foundation China (grant no. 51904025), the S&T Program of Hebei (grant nos. 20311004D, 20591001D), the Fundamental Research Funds for the Central Universities (grant no. FRF-IDRY-20-011), National Postdoctoral Program for Innovative Talents (grant no. BX20190030), the High Steel Center (HSC) at Yanshan University and North China University of Technology, and the High Quality Steel Consortium (HQSC) at University of Science and Technology Beijing, China.

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Authors and Affiliations

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

    Zhiyuan Hu & Haojian Duan

  2. Shougang Zhixin Qian’an Electromagnetic Material Co., Ltd, Tangshan, 064400, Hebei, China

    Zhiyuan Hu

  3. School of Mechanical and Materials Engineering, North China University of Technology, Beijing, 100144, China

    Lifeng Zhang

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  1. Zhiyuan Hu
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  2. Haojian Duan
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Hu, Z., Duan, H. & Zhang, L. Detachment Mechanism of Inclusions From the Interface Between Molten Steel and Slag. Metall Mater Trans B 53, 1339–1343 (2022). https://doi.org/10.1007/s11663-022-02468-8

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  • DOI: https://doi.org/10.1007/s11663-022-02468-8

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