To investigate the effect of the filter device on the cleanliness of molten steel and the flow field distribution within the tundish. The tundish filters were designed into five groups of pores with 20°, 25°, 30°, 35° and 40° elevation angles, and the flow field distribution and impurity removal rate of molten steel were calculated by Discrete Phase Model (DPM). The results showed that the removal rate of impurity in the molten steel could be significantly improved by using the tundish filter with elevation angle. When the elevation angle of the filter was 40°, the impurity removal rate reached 74.05%, and the flow field distribution would be more stable. The presence of the tundish filter caused the higher flow density of the molten steel before the filter inlet to decrease and become steadier after the filter, thereby enhancing the contact rate between impurities in the molten steel and the covering agent, ultimately achieving the highest impurity removal rate.
Keywords: Continuous casting; Elevation angle; Flow field distribution; Removal rate of impurity; Tundish filter.
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