135t LF钢包炉底吹氩工艺水模型研究  

Study on Water Model for 135t LF Ladle Bottom Blowing Argon Process

作　　者：詹中华[1,2] 仇圣桃[2] 阴树标[1] 赖朝彬[3] 

机构地区：[1]昆明理工大学冶金与能源工程学院,云南昆明650093 [2]钢铁研究总院连铸技术国家工程研究中心,北京100081 [3]江西理工大学冶金与化学工程学院,江西赣州341000

出　　处：《热加工工艺》2017年第15期98-101,共4页Hot Working Technology

基　　金：云南省教育厅科学研究基金产业化培育项目(No2016CY H07)

摘　　要：以某135t LF钢包底吹氩为原型,建立了模型和原型比为1∶3.4的钢包水力学模型,研究了透气砖布置方式和吹氩流量对钢液混匀时间的影响。结果表明,在单吹工艺中,0.3R与0.4R下的混匀时间最短,分别为42.7、43.3 s,且对壁面的冲刷作用最弱;在双吹工艺中,大角度(≥120°)工艺比小角度工艺的混匀效果更好,0.5R-120°透气砖布置时混匀时间最短,为35.7 s。在相同流量下,单吹混匀时间略低于双吹。双吹工艺对包壁的冲刷明显好于单吹工艺。综合考虑,宜采用双吹工艺,原型的最佳透气砖布置为0.5R-120°。单、双吹工艺的最佳吹氩流量分别为500、600 L/min。Taking the bottom blowing argon of a 135t LF ladle as a prototype, the ladle hydraulic model with the prototype ratio of 1：3.4 was established. The effects of ventilation brick layout and blowing argon flow rate on the mixing time of molten steel were studied. The results show that： in the single blowing process, the mixing time of 0.3R and OAR ventilation brick layout is the shortest, the mixing time of which is 42.7 s and 43.3 s respectively. In addition, the scouring effect on the wall is the weakest. In the double blowing process, the mixing effect of the large angle process （≥ 120°） is more significant than that of the small angle process. During 0.5R-120°ventilation brick layout, the mixing time is 35.7 s, which is the shortest. At the same flow rate, the mixing time of the single blowing process is slightly shorter than that of the double blowing process. The scouring effect on the wall of double blowing process is better than that of single blowing process. Synthetically considering, the double blowing technology should be adopted, and the optimum ventilation brick layout for the prototype is 0.5R-120°. The optimum argon flow rate for the single and double blowing process is 500 and 600 L/min respectively. Key words ： LF ladle; ventilation brick layout; argon bubbling flow rate; mixing time; hydraulics model

关 键 词：LF钢包 透气砖布置 吹氩流量 混匀时间 水力学模型 

分 类 号：TG243[金属学及工艺—铸造] TG249.7