Modeling study on the flow patterns of gas-liquid flow for fast decarburization during the RH process

Yi-hong Li; Yan-ping Bao; Rui Wang; Li-feng Ma; Jian-sheng Liu

doi:10.1007/s12613-018-1558-y

Volume 25 Issue 2

Feb. 2018

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2018 > 25(2): 153-163

Yi-hong Li, Yan-ping Bao, Rui Wang, Li-feng Ma, and Jian-sheng Liu, Modeling study on the flow patterns of gas-liquid flow for fast decarburization during the RH process, Int. J. Miner. Metall. Mater., 25(2018), No. 2, pp. 153-163. https://doi.org/10.1007/s12613-018-1558-y

Cite this article as:

Yi-hong Li, Yan-ping Bao, Rui Wang, Li-feng Ma, and Jian-sheng Liu, Modeling study on the flow patterns of gas-liquid flow for fast decarburization during the RH process, Int. J. Miner. Metall. Mater., 25(2018), No. 2, pp. 153-163. https://doi.org/10.1007/s12613-018-1558-y

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Research Article

Modeling study on the flow patterns of gas-liquid flow for fast decarburization during the RH process

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Corresponding author:
Yi-hong Li E-mail: mm.liyh@163.com
Received: 26 April 2017; Revised: 19 July 2017; Accepted: 9 August 2017

Abstract

Abstract

A water model and a high-speed video camera were utilized in the 300-t RH equipment to study the effect of steel flow patterns in a vacuum chamber on fast decarburization and a superior flow-pattern map was obtained during the practical RH process. There are three flow patterns with different bubbling characteristics and steel surface states in the vacuum chamber:boiling pattern (BP), transition pattern (TP), and wave pattern (WP). The effect of the liquid-steel level and the residence time of the steel in the chamber on flow patterns and decarburization reaction were investigated, respectively. The liquid-steel level significantly affected the flow-pattern transition from BP to WP, and the residence time and reaction area were crucial to evaluate the whole decarburization process rather than the circulation flow rate and mixing time. A superior flow-pattern map during the practical RH process showed that the steel flow pattern changed from BP to TP quickly, and then remained as TP until the end of decarburization.
- modeling study;
- flow pattern;
- vacuum chamber;
- residence time;
- decarburization;
- RH process

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