A Study of Water Model on Mixing Characteristics of Powder Injected through Top Lance in RH-PTB Vacuum Refining Unit

杜成武; 朱苗勇; 潘时松; 郑淑国

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A Study of Water Model on Mixing Characteristics of Powder Injected through Top Lance in RH-PTB Vacuum Refining Unit

更新时间：2026-01-21

- A Study of Water Model on Mixing Characteristics of Powder Injected through Top Lance in RH-PTB Vacuum Refining Unit
- Special Steel Vol. 26, Issue 5, Pages: 16-18(2005)
- 作者机构：
  
  东北大学材料与冶金学院,沈阳,110004
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：11 April 2005，
  
  Online First：30 March 2023，
  
  Published：30 March 2005
- 稿件说明：
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杜成武, 朱苗勇, 潘时松, et al. A Study of Water Model on Mixing Characteristics of Powder Injected through Top Lance in RH-PTB Vacuum Refining Unit[J]. Special Steel, 2005, 26(5): 16-18.
DOI：

杜成武, 朱苗勇, 潘时松, et al. A Study of Water Model on Mixing Characteristics of Powder Injected through Top Lance in RH-PTB Vacuum Refining Unit[J]. Special Steel, 2005, 26(5): 16-18. DOI：

摘要

根据相似理论

用1∶9水模型钢包(直径0.43m

水面高度0.45m)模拟RH-PTB真空精炼水冷顶枪喷粉技术

研究顶枪气量、上升管提升气量、顶枪枪位高度对粉剂混均时间的影响。结果表明

随顶枪气量增加

粉剂在液体中均混时间增加

并具有最大值;随提升气量增加

均混时间迅速减少

但当提升气量≥15L/min时

均混时间不再继续减少;顶枪枪位对均混时间有一定影响

实际操作中

应根据具体情况

调整顶枪枪位

以减少粉剂均混时间。

Abstract

Based on theory of similarity

the powder injected through top lance in RH-PTB vacuum refining has been simulated using 1:9 water model ladle(diameter-0.43 m

height to water surface-0.45 m)to study the effect of top lance gas flow rate

lifting gas flow rate of up-leg and height of top lance on injecting powder mixing time in liquid. The results showed that with top lance gas flow rate increasing

the injecting powder mixing time in liquid increased and had maximum value; with lifting gas flow rate of up-leg increasing

the mixing time quickly decreased and as lifting gas flow rate was ≥15 L/min

the mixing time was no longer decreasing; the effect of height of top lance on mixing time was definite

therefore in operation

according to specific circumstances to adjust height of top lance decreasing powder mixing time.

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