摘要
采用完全混合流和活塞流相结合的模型,针对铝脱氧钢研究了中间包流动状况下Al2O3夹杂物的粒度分布情况。对比了带挡墙前后的中间包的流场及夹杂物的去除效果,原中间包中夹杂物的总去除率为19%。而在带挡墙的中间包中,由于夹杂物受到湍流运动和活塞流运动的影响造成其相互碰撞粒度不断长大,夹杂物去除率达到37%,大大优于原中间包。
The size distribution of Al2O3 inclusion in Al killed liquid steel in the tundish is studied with a mixing model of constant flow stirred tank reactor and piston flow reactor. The flow fields and inclusion removal ratios of bare tundish and the tundish with dams and weirs are compared and the inclusion removal ratio of bare tundish is only 19%. However by installation of dams and weirs in the tundish the inclusion removal ratio reaches 37 %, which is greatly superior over that of the bare one owing to continuously growth of the grain sizes of the inclusions arising from turbulent flow and piston flow caused collision of the inclusions with each other.
出处
《炼钢》
CAS
北大核心
2011年第2期52-55,共4页
Steelmaking
关键词
中间包
夹杂物
粒度分布
数学模型
tundish
inclusion
size distribution
mathematical model
