气幕挡墙技术优化多流中间包数模研究  

Mathematical simulation of steel flow in multi-strand tundish with gas curtain

作　　者：汪厚植[1] 黄奥[1] 顾华志[1] 张美杰[1] 

机构地区：[1]武汉科技大学耐火材料与高温陶瓷国家重点实验室培育基地,湖北武汉430081

出　　处：《武汉科技大学学报》2008年第3期225-228,共4页Journal of Wuhan University of Science and Technology

基　　金：国家十五科技攻关项目(2005BA325C)

摘　　要：采用数学模拟方法,依据某无缝钢厂实际六流中间包操作工艺参数,应用欧拉两流体模型、多孔介质模型、欧拉-拉格朗日随机轨道模型及Monte-Carlo法,引入气泡吸附模型,研究了气幕挡墙技术对中间包内钢液流动特性及夹杂物去除率的影响。结果表明,采用气幕挡墙技术,对于改善钢液流动状态、均衡各出口停留时间、延长钢液平均停留时间、降低死区体积、提高夹杂物去除率和实现多流超纯净钢冶炼效果显著。According to the structure and operating parameters of a tundish at a certain plant,Eulerian multiphase model, porous media model, Eulerian-Lagrangian model, Monte-Carlo method, together with a model of inclusion removal by bubble flotation are employed under the conditions of different gas blowing positions and different gas flow rates for the mathematical simulation research of the flow characteristics and inclusion removal rate in the tundish with bottom gas blowing. The results indicate that bottom gas blowing can effectively prolong residence time of fluid in tundish, decrease the dead zone volume, and contribute a great deal to the inclusion removal, which might be well used for ultraclean steel making of multi-strand tundish.

关 键 词：多流中间包 气幕挡墙 流动特性 夹杂物 数学模拟 

分 类 号：TF777[冶金工程—钢铁冶金]