Effect of wall design on fluid flow inside a four-strand T-type tundish
GAO Jiang1, LIU Qing2, LI Quan-hui1, SUN Jian-kun2, TAO Biao1, ZHANG Jiang-shan2
1. Research Institute, Nanjing Iron and Steel Co., Ltd.,Nanjing 210044, Jiangsu, China; 2. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
Abstract：The design of retaining wall plays an important role in fluid control of T-type tundish. In this paper, the influence of retaining walls with different diversion holes on the mixing of molten steel and the consistency of each outlet in a four-strand tundish of a steelmaking plant were studied by using the experimental method of “stimulus-response” hydraulic simulation. The results show that the ratio of dead zone is at a relatively low level under the prototype tundish, and there is a big difference between the response time of far outlet and near outlet, and the flow pattern of liquid steel will deteriorate with the increase of flow rate. By reducing the diameter of the diversion hole and designing an upward angle of 45°, the optimized scheme produces a large circulation structure inside the tundish and prolongates the response time of the near flow outlet, which brings forth the increase of plug volume from 6.61% to 9.04%. The consistency index of each outflow is reduced from 22.8 to 9.6 by 58%, and the dead zone ratio is slightly reduced, which is conducive to improving the overall metallurgical performance of the tundish.
FANG Q, ZHANG H, LUO R, et al. Optimization of flow heat transfer and inclusion removal behaviors in an odd multi-strand bloom casting tundish[J]. Journal of Materials Research and Technology, 2020, 9(1):347.
2022, Vol. 41 
