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Multiphase Flow Modeling of Slag Entrainment During Ladle Change-Over Operation

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Abstract

Steel transfer from the ladle to a single-strand tundish using a conventional ladle shroud (CLS), and a dissipative ladle shroud (DLS) is studied during the transient period of ladle change-over operation. Fluid velocities and fluid flow turbulence statistics during this unsteady operation were recorded by an ultrasound velocimetry probe in a 1/3 scale water–oil–air analog model (to emulate steel-slag-air system). Reynolds stress model and volume of fluid model allow the tracking of water–oil, water–air, and oil-air interfaces during this operation. Velocity measurements indicate a very high turbulence with the formation of a water–air bubbles-oil emulsion. Flow turbulence and the intensity of the emulsification decrease considerably due to an efficient dissipation of the turbulent kinetic energy employing the DLS instead of the CLS. The modeling results indicate that DLS is widely recommended to substitute flow control devices to improve the fluid dynamics of liquid steel during this transient operation.

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Acknowledgments

The authors give thanks to the institutions ESIQIE-IPN, TecNM-ITM, CONACYT, PRODEP, and SNI for their permanent support to the Academic Research Group on Simulation of Materials Processing and Fluid dynamics.

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Authors and Affiliations

  1. Department of Metallurgy and Materials Engineering, and K&E Technologies, Instituto Politecnico Nacional–ESIQIE, Mexico City, Mexico

    Rodolfo D. Morales (Professor), Ariana Ceballos-Huerta (Graduate Student, Professor) & Ismael Calderon-Ramos (Graduate Student, Professor)

  2. Metallurgy Graduate Center, TecNM-Instituto Tecnológico de Morelia, Av. Tecnológico No.1500, C.P. 58120, Morelia, Michoacán, Mexico

    Saul Garcia-Hernandez (Professor), Jose de Jesus Barreto (Professor) & Enif Gutierrez (Professor)

  3. K&E Technologies, Mexico City, Mexico

    Rodolfo D. Morales (Professor)

  4. Chemical Engineering Department, Instituto Tecnologico de Lazaro Cardenas, Av. Melchor Ocampo #2555, Col. 4to Sector, C.P. 60950, Lazaro Cardenas, Michoacán, Mexico

    Ariana Ceballos-Huerta (Graduate Student, Professor)

  5. Engineering of Materials, Universidad Autónoma de Coahuila – Facultad de Ingeniería Mecánica y Eléctrica, Barranquilla S/N, C.P. 25280, Monclova, Coahuila, Mexico

    Ismael Calderon-Ramos (Graduate Student, Professor)

Authors
  1. Rodolfo D. Morales
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  2. Saul Garcia-Hernandez
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  3. Jose de Jesus Barreto
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  4. Ariana Ceballos-Huerta
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  5. Ismael Calderon-Ramos
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  6. Enif Gutierrez
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Corresponding author

Correspondence to Saul Garcia-Hernandez.

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Manuscript submitted June 15, 2015.

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Morales, R.D., Garcia-Hernandez, S., Barreto, J.J. et al. Multiphase Flow Modeling of Slag Entrainment During Ladle Change-Over Operation. Metall Mater Trans B 47, 2595–2606 (2016). https://doi.org/10.1007/s11663-016-0663-4

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  • DOI: https://doi.org/10.1007/s11663-016-0663-4

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