摘要
在钢包吹氩阶段易发生钢包内壁的侵蚀。优化底吹位置可以改善钢包底吹搅拌效果与壁面受力,有助于提高钢包寿命,节省生产成本。通过构建钢包单孔与双孔底吹数学模型,探究了不同底吹布置方案对搅拌效果和壁面切应力分布的影响。单孔底吹时,透气砖在0.6R处可使钢包内低流速区体积较小,更有利于钢液混匀,同时透气砖离壁面越近,高切应力区域分布越集中,切应力的集中分布会加剧壁面的机械冲刷磨蚀程度,影响耐材寿命。双孔底吹可以改善壁面切应力分布,在0.6R处,透气砖夹角在105°~135°可使壁面高切应力区域显著减小,并且使钢包内低流速区域体积维持在较低水平。
During ladle refining,a high flow rate of argon is injected through the bottom,which can lead to severe scouring of the refractory wall in an argon-stirred ladle.Optimizing the bottom-blowing configuration can improve stirring efficiency and reduce wall stress,thereby extending ladle lifespan and lowering production costs.It establishes 3D mathematical models for single-and dual-plug bottom-blowing systems to investigate the effects of different blowing arrangements on stirring performance and wall shear stress distribution.For single-plug blowing,positioning the porous plug at 0.6R reduces the low-velocity zone volume,enhancing molten steel homogenization.Additionally,the closer the porous plug is to the wall,the smaller the high-shear-stress area becomes,but the maximum and average shear stress values increase.When the porous plug is moved from the center to 0.75R,the high-shear-stress area decreases by 45%,while the average shear stress in this region increases by 36%.The concentrated shear stress distribution intensifies mechanical wear,negatively impacting refractory lifespan.Dual-plug blowing improves wall shear stress distribution.When the porous plugs are placed at 0.6R with an included angle of 105°~135°,the highshear-stress area is significantly reduced while maintaining a low volume of low-velocity zones in the ladle.
作者
冯巍
张志霄
屈天鹏
杨政宏
宏晔
王德永
FENG Wei;ZHANG Zhixiao;QU Tianpeng;YANG Zhenghong;CHOU Hongye;WANG Deyong(Digital Application Research Institute,Nanjing Iron and Steel Co.Ltd.,Nanjing,210035,China;School of Iron and Steel,Soochow University,Suzhou 215137,China;Citicsteel-chianaref New Materials Research Institute,Chianaref Co.Ltd.,Wuxi 214200,China)
出处
《工业加热》
2026年第3期55-60,65,共7页
Industrial Heating
关键词
钢包精炼
钢包吹氩
流场优化
冲刷磨蚀
切应力
数值模拟
ladle refining
argon stirring in ladle
flow field optimization
scouring wear
wall shear stress
CFD simulation
