摘要
通过在实验室的物理模拟,研究透气砖底吹氩技术对中间包内钢液流动和夹杂物去除行为的影响。结合中间包内的停留时间曲线(RTD曲线)、平均停留时间及死区、活塞流体积分数,研究不同位置的透气砖对钢液流动特性的影响,并与不安装透气砖进行对比。结果表明,中间包底吹入气体后,能够有效改善钢液的流动状态,延长钢液的平均停留时间,并能延长响应时间、降低死区体积。当多孔导流隔墙距离中间包上沿600mm、气幕挡墙距多孔导流隔墙500mm时位置最优,平均停留时间最长,死区体积最小。
Through the laboratory physical simulation, we study the effects of argon gas blowing at the bottom installed gas permeable bricks on steel flow and inclusion removal inside the tundish. Combining the residence time distribution curves （ RTD curves） , mean residence time, dead region and volume fraction of plug flow,we study steel flowability with and without gas permeable bricks of different areas. Then we can concluded that the bottom gas blowing can improve the steel flow condi- tion, prolong response time and reduce the dead region volume. When the distances between the top of the tundish and porous diversion wall and the gas curtain are 600mm and 500ram respectively,the result shows the longest mean residence time and the smallest dead region volume.
出处
《耐火与石灰》
2013年第5期11-13,17,共4页
Refractories & Lime
关键词
中间包
气幕挡墙
物理模拟
流场
透气砖
Tundish
Gas curtain
Physical simulation
Flow field
Gas permeable brick
