Proposal of a Novel Agitation Method using Swirl Motion of Molten Metal Jet

When a liquid was injected into a cylindrical bath of the same liquid through a centered bottom nozzle, a liquid jet was formed above the nozzle. The jet did not always rise straight upward, but exhibited a swirl motion under a certain condition. The bath was strongly agitated in the presence of the...

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Bibliographic Details
Published in:ISIJ International 2003/12/15, Vol.43(12), pp.1890-1896
Main Authors: Yoshida, Jin, Iguchi, Daisuke, Shitara, Moriyoshi, Iguchi, Manabu
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
jet
Metallurgical fundamentals
Metals. Metallurgy
oscillation
Production of metals
refining
Rossby number
sloshing
steelmaking
swirl motion
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Summary:When a liquid was injected into a cylindrical bath of the same liquid through a centered bottom nozzle, a liquid jet was formed above the nozzle. The jet did not always rise straight upward, but exhibited a swirl motion under a certain condition. The bath was strongly agitated in the presence of the swirl motion. A molten metal jet also can be generated using a potential energy difference between two vessels containing the molten metal. The occurrence of the swirl motion is therefore useful for the development of a novel refining process. As a first step of this research series, the critical condition for the occurrence of the swirl motion, the swirl period and the amplitude were investigated in this study. Empirical equations for the period and amplitude were proposed.
ISSN:0915-1559
1347-5460
DOI:10.2355/isijinternational.43.1890