对65t LF钢包,研究了底吹工艺对钢液速度的影响。试验发现:在吹氩量相同的情况下,钢包中心距为0.6R比0.5 R、0.7 R两种中心距的弱搅拌区体积小。在钢包中心距为0.6 R时,底吹夹角为120°弱搅拌区的体积最大,底吹夹角60°的钢包弱搅拌区体积居中,底吹夹角为180°钢包弱搅拌区最小。当底吹夹角为180°,中心距为0.6 R,当吹氩量为100 NL/min时对钢液的搅拌能力较强,又可以避免卷渣的发生,弱搅拌区体积比值为28%。 For 65t LF ladle, the influence of bottom blowing technology on the speed of molten steel was studied. It is found that the volume of weak mixing zone with two center distances of 0.6R 0.5R and 0.7R is smaller when the argon blowing amount is the same. When the ladle center distance is 0.6 R, the bottom blowing angle is 120 °, the volume of the weak mixing zone is the largest, the volume of the ladle weak mixing zone with the bottom blowing angle of 60 ° is the middle, the bottom blowing angle is 180 °, and the ladle weak mixing zone is the smallest. When the bottom blowing angle is 180 ° and the center distance is 0.6 R, when the argon blowing amount is 100 NL / min, the mixing ability of the liquid steel is strong and the occurrence of entrainment is avoided. The volume ratio of the weak stirring zone is 28% .