Modeling study on the flow patterns of gas–liquid flow for fast decarburization during the RH process
来源期刊：International Journal of Minerals Metallurgy and Materials2018年第2期
论文作者：Yi-hong Li Yan-ping Bao Rui Wang Li-feng Ma Jian-sheng Liu
文章页码：153 - 163
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.
Yi-hong Li1,2，Yan-ping Bao2，Rui Wang3，Li-feng Ma1，Jian-sheng Liu1
1. Collaborative Innovation Centre of Taiyuan Heavy Machinery Equipment and School of Materials Science and Engineering, Taiyuan University of Science and Technology2. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing3. School of Materials Science and Engineering, North University of China
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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