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| Flow field optimization based on tundish impact zone |
| WANG Jin1, LIU Yu-hang1, LIU Wei1, YANG Shu-feng1,2, LI Jing-she1, ZHAO Meng-jing3 |
1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. State Key Laboratory of Advanced Metallurgy, University of Science and Technology, Beijing 100083, China;
3. Metallurgical and Building Materials Business Department, China International Engineering Consulting Corporation, Beijing 100048, China |
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Abstract Aiming at the problem of production stability and product purification for a factory tundish prototype in the actual production process, the structure of tundish was optimized by combining numerical simulation and physical simulation. The single-factor variables (the impact zone, aperture diameter of diversion hole and inclination of diversion hole) were classified as single-factor optimization, and the consistency change law of outlet temperature difference and dead zone ratio was used as guide for further composite optimization, and the optimal tundish structure parameters were determined. The results show that the optimization effect of composite factor is greater than that of single factor, and the volume size of tundish impact zone has the greatest influence on the flow state of fluid, followed by the aperture size of guide aperture and the smallest inclination. The optimal scheme of moving the No.1 retaining wall by 450 mm, selecting the aperture of diversion aperture by 100 mm, selecting the inclination angle of diversion hole K-1 and K-2 by 20°, and moving the diversion hole K-3 by 50 mm and the inclination angle of 10° was determined. The dead band ratio of this scheme is 16.27%, which is 29.03% lower than that of the prototype, and the maximum temperature difference between the outlet of far and near end is reduced from 1.6 K to 0.6 K of the prototype, which further improves the uniformity of tundish flow field. This provides a theoretical basis for the actual tundish optimization of the plant, and also aims to provide optimization ideas and structural parameters for the optimization of similar tundish enterprises.
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Received: 02 November 2022
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2023, Vol. 33 
