Numerical Simulation on Melting and Mixing of LaFe Alloy in Argon-Stirred Ladle

被引：0

作者：

Liu Y. ^{[1
,2
,3
]}

Wang J. ^{[4
]}

Yang W. ^{[1
]}

Liu F. ^{[1
]}

Li Y. ^{[1
]}

Cui L. ^{[1
,2
]}

Zhang Y. ^{[2
,3
]}

机构：

[1] School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing

[2] Baotou Research Institute of Rare Earths, State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Inner Mongolia, Baotou

[3] National Engineering Research Center of Rare Earth Metallurgy and Function Materials, Inner Mongolia, Baotou

[4] School of Mechanical and Materials Engineering, North China University of Technology, Beijing

来源：

Cailiao Daobao/Materials Reports | 2022年 / 36卷 / 21期

基金：

中国国家自然科学基金;

关键词：

argon stirring; ladle; LaFe alloy; melting and mixing; numerical simulation;

D O I：

10.11896/cldb.21050172

中图分类号：

学科分类号：

摘要：

The melting and mixing phenomena of LaFe alloys during the argon stirring in a ladle was studied using a Eulerian-Lagrangian multiphase approach. Effects of the argon blowing system and the alloy grade on the melting and mixing of the alloy were investigated. Results show that the grade of LaFe alloy influenced its density and melting process in molten steel, and there was a linear relationship between melting time and its grade. The higher the grade was, the shorter the melting time was. The argon blowing with double nozzles was the best way to mix the alloy, followed by single nozzle eccentric argon blowing. The mixing of alloy at the bottom of the ladle was inefficient when the steel was stirred central argon blowing. Under the condition of argon blowing position of 0.8R and argon blowing flow rate of 100 NL / min, the maximum mixing time of pure La metal was less than 300 s, while that of 20LaFe and 50LaFe was more than 320 s. On the premise of acceptable alloy yield, the alloy grade should be increased as much as possible to reduce the mixing time. © 2022 Cailiao Daobaoshe/ Materials Review. All rights reserved.

引用

共 27 条

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