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Effect of Melt Depth and Nozzle Type on the Mixing Behavior in Bottom-Blown Steelmaking Ladle – A Water Model Approach

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Abstract:

It is generally well known that a steelmaking ladle operation plays an important role in the production of clean steel. A turbulent mixing of melt with Ar gas bubbling from the ladle bottom can homogenize a melt temperature and can control precisely chemical compositions of steel. In order to figure out these phenomena, a quantitative analysis of fluid flow behavior of gas and melt during a ladle operation is required and special concerns should be focused on effects of operating parameters on the perfect mixing time of melt. In this study, as a basic approach, effects of operating parameters such as a melt depth (aspect ratio) and a nozzle type (one-hole or porous plug) on the mixing behavior in ladle operation are investigated. Water model experiments are carried out to simulate these melt behaviors in steelmaking ladle. As a result, it was found that there exist an optimized melt depth and a nozzle type at a given gas flow rate, which affect significantly on the mixing behavior of melt.

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Periodical:

Materials Science Forum (Volumes 510-511)

Pages:

494-497

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.510-511.494

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Online since:

March 2006

Authors:

Sung-Ho Cho, Chang Won Kim, Jeong Whan Han, Byung Don You, Dong Sik Kim

Keywords:

Bubbling, Fluid Flow, Ladle, Ladle Metallurgy, Mixing Time, Water Model

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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