Optimization of flow control devices in a single-strand slab continuous casting tundish |
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| Authors: | Ning Ding Yan-ping Bao Qi-song Sun Li-feng Wang |
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| Affiliation: | 1.School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing,China;2.Shougang Research Institute of Technology,Beijing,China |
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| Abstract: | The optimization of flow control devices in a single-slab continuous casting tundish was carried out by physical modeling,
and the optimized scheme was presented. With the optimal tundish configuration, the minimum residence time of liquid steel
was increased by 1.4 times, the peak concentration time was increased by 97%, and the dead volume fraction was decreased by
72%. A mathematical model for molten steel in the tundish was established by using the fluid dynamics package Fluent. The
velocity field, concentration field, and the residence time distribution (RTD) curves of molten steel flow before and after
optimization were obtained. Experimental results showed that the reasonable configuration with flow control devices can improve
the fluid flow characteristics in the tundish. The results of industrial application show that the nonmetallic inclusion area
ratio in casting slabs is decreased by 32% with the optimal tundish configuration. |
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