145吨吹氩钢包内渣-金界面卷混及夹杂物去除行为的物理模拟研究  

Physical Modeling Study on Slag/Steel Entrainment and Inclusion Removal Behavior in 145 t Ladle with bottom Argon Blowing

作　　者：朴峰云[1] 郑淑国[1] 朱苗勇[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819

出　　处：《铸造技术》2014年第1期132-134,共3页Foundry Technology

摘　　要：基于相似原理,利用物理模拟方法研究了145吨吹氩钢包内的渣-金界面卷混行为及夹杂物的去除行为。选择煤油和真空泵油的混合物来模拟钢包渣,考察了吹气量对渣-金卷混的影响;选择乳状液滴作为模拟夹杂物,考察了时间、吹气量对夹杂物去除行为的影响规律。结果表明:存在一个发生钢包渣卷入钢液中的临界气量,吹气量一旦超过该气量,钢包发生卷渣的频率随气量增加而增大;大多数夹杂物通过吹氩处理8 min可去除;夹杂物的去除率随气量增加先增大后减小,且0.379 NL·min-1的气量为最优的去夹杂气量。Based on the similarity principle, the behavior of slag/steel entrainment and inclusion removal in 145 ton ladle was studied by physical modeling. By choosing the mixture of kerosene and vacuum pump oil, and emulsion drops simulated as the top slag and inclusions in ladle respectively, the effect of gas flowrate on slag entrapment, and the effects of time and gas flowrate on inclusion removal were investigated. The results show that there was a critical gas flowrate for slag entrapment, and the slag entrapment occurred more frequently with the increase of gas flowrate. Most of the inclusions can be removed in eight minutes of gas blowing, and the inclusion removal rate first increased and then decreased with the increase of gas flowrate. And the gas flowrate of 0.379 NL·min^-1 is the best one for the inclusion removal.

关 键 词：吹氩钢包 卷渣 夹杂物 水模拟 

分 类 号：TF777[冶金工程—钢铁冶金]