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

张德慧; 沈明钢; 祁庆花

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

更新时间：2026-01-21

- A Study of Water Modelling on Stirring Behavior of Liquid Steel in Bottom-Blowing Ladle with Immersed Cylinder
- Special Steel Vol. 35, Issue 1, Pages: 4-6(2014)
- 作者机构：
  
  辽宁科技大学材料与冶金学院,鞍山,114051
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：08 July 2013，
  
  Online First：05 September 2022，
  
  Published：05 September 2014
- 稿件说明：
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张德慧, 沈明钢, 祁庆花. A Study of Water Modelling on Stirring Behavior of Liquid Steel in Bottom-Blowing Ladle with Immersed Cylinder[J]. Special Steel, 2014, 35(1): 4-6.
DOI：

张德慧, 沈明钢, 祁庆花. A Study of Water Modelling on Stirring Behavior of Liquid Steel in Bottom-Blowing Ladle with Immersed Cylinder[J]. Special Steel, 2014, 35(1): 4-6. DOI：

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 m

/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~

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 m

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’。

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 m

/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 m

/h and mixing time is 10 s; in condition of inserting immersed cylinder with diameter 130 mm and inserting depth 90 m

the critical gas blowing rate for non-occurring slag entrapment is 0. 30 m

/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'.

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