摘要
利用数值模拟方法,分析了优化前后4种顶吹氧枪喷吹条件下熔池流动特性,并采用全六面体网格等尺寸建模,结合VOF多相流算法追踪熔池“气-渣-金”三相流过程,将模拟结果进行对比分析,确定适用于承德钒钛150 t提钒转炉的氧枪结构参数。优化后氧枪对转炉熔池冲击搅拌效果明显优于原氧枪,但优化后氧枪加速了转炉底部的侵蚀程度。工业试验结果表明,在保证现有提钒效果不变的前提下,转炉平均供氧时间缩短40 s,氧枪寿命提高35炉次,可有效提高转炉冶炼动力学条件。
The numerical simulation method was used to analyze the flow characteristics of the molten pool under the spraying conditions of four top blowing oxygen lances before and after optimization,and the full-hexahedral grid is dimensional modeling was adopted,and the three-phase flow process of the molten pool"gas-slag-metal"was traced by combining the VOF multiphase flow algorithm,and the simulation results were compared and analyzed to determine the structural parameters of the oxygen gun suitable for Chengde vanadium and titanium 150 t vanadium converter.The results show that the impact stirring effect of the optimized oxygen lance on the converter melting pool is significantly better than that of the original one,but the optimized oxygen lance accelerates the erosion degree of the converter bottom.The industrial test results show that under the premise of ensuring that the existing vanadium extraction effect remains unchanged,the average oxygen supply time of the converter is shortened by 40 s and the life of the oxygen lance is increased by 35 times,which can effectively improve the smelting kinetic conditions of the converter.
作者
韩德文
刘福海
唐逸兴
夏韬
方鸣
梁静召
Han Dewen;Liu Fuhai;Tang Yixing;Xia Tao;Fang Ming;Liang Jingzhao(Chengde Vanadium and Titanium New Materials Co.,Ltd.,Chengde 067000,Hebei;School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083)
出处
《河北冶金》
2023年第3期37-41,共5页
Hebei Metallurgy
关键词
复吹转炉
氧枪
数值模拟
多相流
供氧时间
寿命
combined blowing converter
oxygen lance
numerical simulation
multiphase flow
oxygen supply time
life cycle
