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研究了钢包中心底吹和偏心底吹时熔池中的气泡运动行为,并对其进行了分析。对于中心底吹,气泡垂直上升;对于偏心底吹,气泡流有向钢包中心偏移的现象,其偏移程度与底吹气量和底吹位置有关,在实验室设计的气量下气泡偏移量随着气量的增加而增加,在现场可考虑的底吹位置范围内,气泡偏移量随着底吹位置偏心程度增加而增加。冶金工业生产中CAS钢包精炼中气泡偏移现象严重影响了浸渍罩寿命和CAS精炼的效果,针对气泡偏移的事实,为了提高CAS精炼效果和浸渍罩的寿命,提出CAS精炼工艺中浸渍罩放入位置应向钢包中心偏移,偏移程度应根据实际情况而定。
The movement of bubbles in the molten pool at the bottom blowing and eccentric blowing of the ladle center was studied and analyzed. For center bottom blowing, the bubble rises vertically; for eccentric bottom blowing, the bubble flow is directed to the center of the ladle, and the offset is related to the bottom blowing volume and the bottom blowing position. The bubble offset at laboratory designed volume As the gas volume increases, the bubble offset increases with the eccentricity of the bottom blowing position within the range of bottom blowing positions considered at the site. CAS ladle refining metallurgy industrial production in the bubble lag phenomenon of a serious impact on the immersion cover life and the effect of CAS refining, the bubble offset for the fact that in order to improve the CAS refining effect and the life of impregnated cover proposed CAS dipping impregnated cover Into the position should be ladle center offset, the degree of offset should be based on the actual situation.