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Investigation of a possible route for oxygen transport via the metal droplets in top-blown steel converters

Investigation of a possible route for oxygen transport via the metal droplets in top-blown steel converters

Djambazov, G., Pericleous, K. ORCID: 0000-0002-7426-9999, Lebon, B., Doh, Y., Jardy, A., Chapelle, P., Ghazal, G. and Gardin, P. (2011) Investigation of a possible route for oxygen transport via the metal droplets in top-blown steel converters. In: 2011 International Symposium on Liquid Metal Processing and Casting (LMPC), 25-28 September 2011, Nancy, France. (Unpublished)

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Abstract

The action of a top-blown compressible oxygen jet forms a deep cavity onto the molten steel bath surface. Oxygen chemically dissolved into the liquid metal droplets that have detached at the cavity edge by shear returns to the bath when each droplet descends through the slag layer and rejoins the bath. The remaining oxygen needed to sustain the part of the decarburization taking place in the bath (or at its surface) is assumed to be supplied by liquid iron oxide emulsified with the liquid metal. In a numerical model of the fluid flow in the converter vessel (gas in the top space and liquid metal in the bath) the concentration of this emulsion is traced as the oxide is carried by the strong, turbulent flow around the cavity lip to mix inside the bath. Highest concentrations are observed near the free surface suggesting that the interface layer is the main site of the bath reaction.

Item Type: Conference or Conference Paper (Paper)
Uncontrolled Keywords: steel converter, numerical simulation, liquid metal flow, free surface
Subjects: T Technology > T Technology (General)
T Technology > TL Motor vehicles. Aeronautics. Astronautics
T Technology > TS Manufactures
Pre-2014 Departments: School of Computing & Mathematical Sciences
School of Computing & Mathematical Sciences > Department of Mathematical Sciences
Last Modified: 14 Oct 2016 09:17
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/6857

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