钢包底吹氩搅拌特性  

Stirring characteristics of argon blowing from the ladle bottom

作　　者：韩建军[1,2] 李士琦[2] 吴龙[2] 

机构地区：[1]清华大学环境学院,北京100084 [2]北京科技大学冶金与生态工程学院,北京100083

出　　处：《北京科技大学学报》2011年第9期1085-1090,共6页Journal of University of Science and Technology Beijing

摘　　要：以广义相似原理为理论基础,采用水力学模拟实验方法,对钢包底吹氩搅拌特性进行了研究.研究中以谐时性准数为评价指标,考虑的影响因素包括修正弗劳德准数、液气密度比、熔池深径比和吹气位置.结果表明,各因素对评价指标的影响均显著,最为显著的是液气密度比;各因素按显著性大小排序为液气密度比、修正弗劳德准数、熔池深径比和吹气位置;钢包吹气位置设在单孔0.5R处搅拌效果最佳.Based on the generalized similarity principle, stirring characteristics of argon blowing from the ladle bottom were studied by water model experiments. In the research, the harmonic number was considered as an evaluating indicator, and four influencing factors were modified Froude number, liquid-gas density ratio, melting bath depth-to-diameter ratio, and purging plug position. Experimental results show that all the four influencing factors have remarkable effect on the evaluating indicator, and the liquid-gas density ratio is the most obvious. According to the significance, the four influencing factors is in the order of liquid-gas density ratio, modified Froude number, melting bath depth-to-diameter ratio, and purging plug position. Furthermore, the best stirring effect will be achieved while using a single purging plug, the position of which is 0. 55R away from the bottom center.

关 键 词：炼钢 精炼 钢包 搅拌 影响因素 

分 类 号：TF769.2[冶金工程—钢铁冶金]