150t底吹钢包渣钢卷混行为模拟  

Modeling on slag entrapment behavior in the 150 t bottom-blown ladle

作　　者：朱燕玉[1] 任志峰[2] 张红旭 李怡宏 ZHU Yanyu;REN Zhifeng;ZHANG Hongxu;LI Yihong(Department of Metallurgical and Chemical Engineering,Baotou Iron and Steel Vocational Technical College,Baotou 014010,China;School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;Tongcai Limited Company,Shanxi Jianbang Group,Linfen 041000,China)

机构地区：[1]包头钢铁职业技术学院冶金化工系,内蒙古包头014010 [2]太原科技大学材料科学与工程学院,山西太原030024 [3]山西建邦集团通才工贸有限公司,山西临汾041000

出　　处：《炼钢》2023年第5期41-47,共7页Steelmaking

基　　金：中央引导地方科技发展资金项目(YDZJSX2022C028);山西省基础研究计划面上项目(20210302123218,202203021211187)。

摘　　要：以某钢厂150 t底吹钢包为原型,建立了相似比为1∶4.7的物理模型和三维非稳态数学模型,理论分析了不同底吹流量和底吹位置下的渣钢卷混过程,得到了描述卷渣的临界速度和临界液滴直径。物理模拟试验结果表明:氩气流量大小对双孔底吹钢包精炼中卷渣的形成具有决定性作用,双孔位置为0.45 R时,底吹流量应控制在550 L/min以下;双孔位置为0.60 R时,底吹流量应控制在450 L/min以下。在试验基础上,推导了界面流速与临界气体流量之间的关系。在实际过程中,软吹氩时,界面张力为0.12~1.2 N/m时,建议双孔底吹流量为70~500 L/min。The slag entrapment under different conditions of 150 t blowing argon ladle furnace was investigated by physical simulation and numerical simulation.The physical model and mathematical model with a similarity ratio of 1∶4.7 were established.The processing of slag entrapment under different blowing structures was analyzed and the critical velocity and critical droplets diameter of describing slag entrapment were obtained.The physical simulation results showed that the argon flow rate played a decisive role in the slag entrapment.When the blowing position was 0.45 R,the bottom blowing rate should be controlled below 550 L/min;and when it was 0.60 R,the gas rate should be controlled below 450 L/min.Based on the experiments,the relationship between the interface flow velocity and the critical gas flowrate was deduced.In the real process,it was suggested that the bottom blowing rate is from 70 L/min to 500 L/min when the interface tension was 0.12-1.2 N/m during the soft argon blowing.

关 键 词：钢包精炼 渣钢卷混 临界气量流量 临界卷渣速度 

分 类 号：TF72[冶金工程—钢铁冶金]