ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2014, Vol. 35 ›› Issue (1): 4-6.

• 试验研究 • 上一篇    下一篇

插入浸渍圆筒底吹氩钢包内钢液搅拌行为的水模型研究

张德慧, 沈明钢, 祁庆花   

  1. 辽宁科技大学材料与冶金学院,鞍山114051
  • 收稿日期:2013-07-08 出版日期:2014-02-01 发布日期:2022-09-05
  • 作者简介:张德慧(1971-),男,博上研究生(辽宁科技大学),1994年鞍山钢铁学院(本科)毕业,炼钢和连铸工艺研究。

A Study of Water Modelling on Stirring Behavior of Liquid Steel in Bottom-Blowing Ladle with Immersed Cylinder

Zhang Dehui, Shen Minggang, Qi Qinghua   

  1. School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051
  • Received:2013-07-08 Published:2014-02-01 Online:2022-09-05

摘要: 以150 t钢包为原型,采用几何相似比1:7的水模型,研究插入钢包的浸渍圆筒直径(50~130 mm) , 插入深度(30~150 mm)和底吹气体流量(0.03~0.48 m3/h)对钢液混匀时间和液面振幅的影响。结果表明,随浸渍圆筒直径和插入深度的增加,液面振幅减小;随底吹气量增加,液面振幅增大;不插入浸渍圆筒时不发生卷渣的临界底吹气量为0.09 m~3/h,混匀时间为10 s;插入直径130 mm、深度90 mm的浸渍圆筒时,不发生卷渣的临界底吹气量为0.30 m3/h,最短混匀时间为4 s。实验数据回归分析得出150 t钢包内钢液均混时间-t’与底吹气量-Q’、浸渍圆筒直径-d’和插入深度h’的关系为t’=2.69+0.017 9 d’+0.011 2h’-0.425 Q’。

关键词: 150 t钢包, 底吹搅拌, 浸渍圆筒, 液面振幅, 混匀时间

Abstract: Based on prototype of 150 t ladle, the effect of diameter of immersed cylinder inserting in ladle (50 ~ 130 mm), inserting depth (30 ~ 150 mm) and bottom blowing gas rate (0. 03 -0.48 m3/h) on mixing time of liquid and amplitude of liquid level has been studied by using geometry similarity ratio 1 : 7 water model. Results show that with increasing immersed cylinder diameter and inserting depth, the amplitude of liquid level decreases; with increasing bottom gas blowing rate the amplitude of liquid level raises ; in condition without inserting immersed cylinder the critical gas blowing rate for non-occurring slag entrapment is 0. 09 m3/h and mixing time is 10 s; in condition of inserting immersed cylinder with diameter 130 mm and inserting depth 90 mm, the critical gas blowing rate for non-occurring slag entrapment is 0. 30 m3/h and shortest mixing time is 4 s. It is obtained by test data regression analysis that for 150 t ladle the relation between liquid mixing time U with bottom gas blowing rate Q', immersed cylinder diameter d' and inserting depth is t'=2.69 +0.017 9 d '+ 0.011 2 h'—0.425 Q'.