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Physical Modeling of Gas Jet-Liquid Free Surface in Steelmaking Processes

Published online by Cambridge University Press:  01 February 2011

J. Solórzano-López ,
R. Zenit ,
C. González-Rivera  and
M. A. Ramírez-Argáez
J. Solórzano-López
Affiliation:
Facultad de Química, UNAM, Av. Universidad 3000, Coyoacán, 04510, México, D.F.
R. Zenit
Affiliation:
Instituto de Investigaciones en Materiales, UNAM, Av. Universidad 3000, Coyoacán, 04510, México, D.F.
C. González-Rivera
Affiliation:
Facultad de Química, UNAM, Av. Universidad 3000, Coyoacán, 04510, México, D.F.
M. A. Ramírez-Argáez
Affiliation:
Facultad de Química, UNAM, Av. Universidad 3000, Coyoacán, 04510, México, D.F.
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Abstract

Gas jets play a key role in several steelmaking processes as in the Basic Oxygen Furnace (BOF) or in the Electric Arc Furnace (EAF). They improve heat, mass and momentum transfer in the liquid bath, improve mixing of chemical species and govern the formation of foaming slag in EAF. In this work experimental measurements are performed to determine the dimensions of the cavity formed at the liquid free surface when a gas jet impinges on it as well as liquid velocity vector maps measured in the zone affected by the gas jet. Cavities are measured using a high speed camera while the vector maps are determined using a Particle Image Velocimetry (PIV) technique. Both velocities and cavities are determined as a function of the main process variables: gas flow rate, distance from the nozzle to the free surface and lance angle. Cavity dimensions (depth and diameter) are statistically treated as a function of the process variables and also as a function of the adequate dimensionless numbers that govern these phenomena. It is found that Froude number and Weber number control the depression geometry.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1243: Symposium 5 – Advanced Structural Materials , 2009 , 24
Copyright
Copyright © Materials Research Society 2010

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References

REFERENCES

1. Wakelin, D. H. Ph. D. thesis, University of London, 1966.Google Scholar
2. Lee, M., Whitney, V., Molloy, N., Scandinavian Journal of Metallurgy, 30, 2001, 330–336.Google Scholar
3. Sharma, S.K., Hlinka, J.W., Kern, D.W., Iron and Steelmaker, 4, 1977, No. 7, 7–18.Google Scholar
4. Nordqist, A., Kumbhat, N., Jonsson, L., Jonssön, P., Steel Research International, 77, 2006, No. 2, 82–90.Google Scholar
5. Koria, S.C., Lange, K.W., Steel Research, 58, 1987, No. 9, 421–426.Google Scholar
6. Qian, F., Muthasaran, R., Farouk, B., Metallurgical and Materials Transactions B, 27B, 1996, No. 6, 911–920.Google Scholar
7. Subagyo, , Brooks, G. A., Coley, K. S. and Irons, G. A., ISIJ International, 43, 2003, No. 7, 983–989.Google Scholar
8. Tago, Y., Higuchi, Y., ISIJ International, 43, 2003, 209–215.Google Scholar
9. Gu, L., Irons, G., 1999 Electric Furnace Conference Proceedings, 269–278.Google Scholar
10. Schwarz, M. P., Fluid Flow Phenomena in Metals Processing, The Minerals, Metals & Materials Society, 1999, 171–178.Google Scholar
11. Memoli, F., Mapelli, C., Ravanelli, P., Corbella, M., ISIJ International, 44, 2004, No. 8, 1342–1349.Google Scholar
12. Banks, R. B., Chandrasekhara, D. V., Journal of Fluid Mechanics, 15, 1963, 13–34.Google Scholar
13. Mc Gee, P., Irons, G. A., 1999 Electric Furnace Conference Proceedings, 439–446.Google Scholar