| Modeling study on the flow patterns of gas-liquid flow for fast decarburization during the RH process |
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| 作者姓名： | Yi-hong Li Yan-ping Bao Rui Wang Li-feng Ma Jian-sheng Liu |
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| 作者单位： | Collaborative Innovation Centre of Taiyuan Heavy Machinery Equipment and School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China |
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| 基金项目： | This work was financially supported by the National Natural Science Foundation of China，the PhD Early Development Program of Taiyuan University of Science and Technology，Shanxi Province Science Foundation for Youths，Key Project of Research and De-velopment Plan of Shanxi Province，NSFC-Shanxi Coal Based Low Carbon Joint Fund |
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| 摘 要： | 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.
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| 关 键 词： | modeling study flow pattern vacuum chamber residence time decarburization RH process |
Modeling study on the flow patterns of gas–liquid flow for fast decarburization during the RH process |
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| Yi-hong Li,Yan-ping Bao,Rui Wang,Li-feng Ma,Jian-sheng Liu.Modeling study on the flow patterns of gas-liquid flow for fast decarburization during the RH process[J].International Journal of Minerals,Metallurgy and Materials,2018,25(2):153-163. |
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| Authors: | Yi-hong Li Yan-ping Bao Rui Wang Li-feng Ma Jian-sheng Liu |
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| Institution: | 1.Collaborative Innovation Centre of Taiyuan Heavy Machinery Equipment and School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan,China;2.State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing,China;3.School of Materials Science and Engineering,North University of China,Taiyuan,China |
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| 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 de-carburization 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. |
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