吹气孔直径对钢包模型内流动的影响  

Effect of diameter of nozzle on fluid flow in ladle model

作　　者：赵根安 张立峰 Alberto N.Conejo 段豪剑 周海忱 董佳鹏 ZHAO Gen-an;ZHANG Li-feng;Alberto N.Conejo;DU AN Hao-jian;ZHOU Hai-chen;DONG Jia-peng(School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China;State Key Lab of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao 066004,Hebei,China)

机构地区：[1]北京科技大学冶金与生态学院,北京100083 [2]燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004

出　　处：《中国冶金》2020年第12期22-27,共6页China Metallurgy

基　　金：国家自然科学基金资助项目(U1860206,51725402,51904025);博士后创新人才支持计划资助项目(BX20190030)。

摘　　要：采用相似比为1∶10的水模型研究了钢包底吹氩系统中吹气孔直径对钢液流动的影响,通过测量钢包中心面的速度场,得到流体流动随吹气孔直径的变化规律。研究结果表明,吹气孔直径在1~3 mm范围内,随吹气孔直径增加,气柱、液面和包壁附近的流体速度减小,整个钢包内速度场分布更均匀。随吹气孔直径增加,涡心坐标从(0.12,0.12)向(0.12,0.10)和(0.12,0.09)变化,涡心向上移动,横向移动不明显。随着吹气孔直径的增加,底部产生的气泡直径变大,混匀时间有所减小。The influence of nozzle diameter on liquid steel flow in ladle was studied by using a water model with a similarity ratio of 1:10.The variation law of fluid flow with the hole diameter was investigated by measuring the velocity field on the center surface of the ladle.Results showed that within the nozzle diameter of 1-3 mm,the larger the nozzle diameter,the lower the fluid velocity near the gas column,liquid surface and ladle wall,and the more uniform the distribution of the velocity became uniform in the ladle.With the increase of the nozzle diameter,the center coordinate of vortex varied from(0.12,0.12),to(0.12,0.10)and(0.12,0.09).The center of vortex moved upward,but the horizontal movement was not obvious.With the increase of nozzle diameter,the bubble diameter at the bottom increased and the mixing time decreased.

关 键 词：钢包 水模型 底吹氩 流体流动 吹气孔 

分 类 号：TF769[冶金工程—钢铁冶金]