摘要
通过中间包物理模拟的试验方法对某钢厂四流中间包进行控流装置优化,优化试验分为挡墙类型优化和挡墙结构优化。结果表明,原型方案流体流动状态很差,导流孔孔径过大易导致短路流现象的发生,死区比例也高达34.16%。优化后的最优方案中Y3死区比例降幅高达33.14%,流体平均停留时间由原型的761.2延长至900.7s,滞止时间则由32.2延长至76.7s,优化效果显著,说明最优方案可以显著地提高中间包体积利用率,并改善钢液的流动状态,有利于冶金质量的提高。
Optimization of flow control devices for four-strand tundish in a steel plant was investigated by physical simulation.The optimization experiment was divided into the optimization of baffles type and the optimization of baffles structure.The experimental results showed that the flow state of the fluid in the prototype scheme was very poor,and the excessive diameter of the diversion orifice could easily lead to short-circuit flow,and the proportion of dead zone was as high as 34.16%.The proportion of dead zone in the optimized scheme Y3 was decreased by33.14%.The average residence time of the fluid was extended from 761.2 to 900.7 s,and the stagnation time was extended from 32.2 to 76.7 s.The optimization effect was remarkable.It showed that the optimum scheme could significantly improve the utilization ratio of ladle volume and the flow state of molten steel,which was conducive to the improvement of metallurgical quality.
作者
杨树峰
吴金强
李京社
汪易航
李静远
YANG Shu-feng;WU Jin-qiang;LI Jing-she;WANG Yi-hang;LI Jing-yuan(School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China)
出处
《中国冶金》
CAS
北大核心
2019年第4期81-87,共7页
China Metallurgy
基金
国家自然科学基金资助项目(51822401
51734003)
关键词
四流中间包
控流装置
物理模拟
RTD曲线
four-strand tundish
flow control device
physical simulation
RTD curve
