底吹氩钢包渣金行为水模实验研究  

Water model experimental study on slag metal behavior in ladle with bottom argon blowing

作　　者：李威震 张加财 黄凯 高雨晴 关锐[1] 艾新港[1] LI Weizhen;ZHANG Jiacai;HUANG Kai;GAO Yuqing;GUAN Rui;AI Xingang(School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051,China)

机构地区：[1]辽宁科技大学材料与冶金学院,辽宁鞍山114051

出　　处：《辽宁科技大学学报》2022年第6期401-404,410,共5页Journal of University of Science and Technology Liaoning

基　　金：“十四五”国家重点研发计划(2021YFB3702005);辽宁省科技重大专项计划(2020JH1/10100001);辽宁科技大学大学生创新创业训练计划(X202210146158)。

摘　　要：以某厂30吨钢包为原型,采用水模拟实验研究钢包底吹氩卷渣、渣层裸露、卷渣频率等渣金相互作用规律。制作1∶4有机玻璃模型,讨论吹气流量及渣层厚度对渣金行为的影响。实验结果表明,底吹气流量越大造成的卷渣情况越严重,卷渣深度越大,在底吹流量180 L/min时卷渣深度最大可达43 mm。渣层裸露面积随渣层厚度增加而减小,随吹气流量的增加而增加。相同流量时,渣层厚度为30 mm时卷入渣在钢液中的停留时间最长,为1.7 s;相同渣层厚度时,停留时间随吹气流量增大而增加。卷渣频率随渣层厚度或吹气流量的增加而增加,呈现渣层越厚、流量越大越易卷渣的趋势。Using a 30-ton ladle in a plant as a prototype,water simulation experiments were conducted to study the slag-metal interaction laws such as bottom-blown argon slag entrapment,slag layer exposure,and slag entrapment frequency. A plexiglass model of 1∶4 was made to discuss the impacts of blowing gas flow rate and slag layer thickness on the slag-metal behavior. The experimental results show that the higher the bottom blowing gas flow rate causes the more serious slag entrapment and the greater the slag entrapment depth.At the bottom blowing flow rate of 180 L/min,the slag entrapment reached its maximum depth of 43 mm. The exposed slag area decreases with the increase in the slag layer thickness,and increases with the increase in the blowing gas flow rate. Under the same flow rate,the involved slag with the slag layer thickness of 30 mm exhibits the longest residence time of 1.7 s in the liquid steel. Under the same slag layer thickness,the residence time increases with the increase in the blowing rate. The slag entrapment frequency increases with the slag layer thickness or the blowing rate,showing the trend of the thicker the slag layer,or the greater the flow rate,the easier the slag entrapment.

关 键 词：钢包 底吹氩 卷渣 水模实验 

分 类 号：TF769.2[冶金工程—钢铁冶金]