Prediction of liquid circulation flow rate in RH degasser:improvement of decarburization at low atmospheric pressure

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外文摘要：The two-fluid model coupled with population balance model was used for simulating the gas-liquid flow in the Ruhrstahl-Heraeus(RH)degasser.The predicted circulation flow rate was compared with that measured from a water model experiment to validate the mathematical model.Then,influence of snorkel immersion depth on liquid circulation flow rate was numerically investigated under an atmospheric pressure of 101 and 84 kPa,respectively.Predicted result indicates that the circulation flow rate of the RH degasser in the high-altitude area was severely reduced because of the decrease in atmospheric pressure.However,increasing the snorkel immersion depth from 0.5 to 0.7 m can compensate for the decrease in atmospheric pressure.Industrial test result indicates that decarburization rate is significantly enhanced by increasing the snorkel immersion depth.Through optimization,the percentage of heats with a final carbon content less than 0.002 wt.％is significantly increased from 22.0％to 96.4％.

外文关键词：

RH degasserTwo-fluid modelPopulation balance modelCirculation flow rateDecarburizationSnorkel immersion depth

作者：

Gu-jun Chen、Sheng-ping He

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作者单位：

College of Materials Science and Engineering,Yangtze Normal University,Chongqing 400044,China

College of Materials Science and Engineering,Chongqing University,Chongqing 400044,China

基金：

National Natural Science Foundation of ChinaNatural Science Foundation of Chongqing,ChinaScience and Technology Research Program of Chongqing Municipal Education Commission

项目编号：

52104321CSTB2023NSCQ-MSX0871KJQN202101404

出版年：

2024

DOI：

10.1007/s42243-023-01166-2

钢铁研究学报(英文版)

钢铁研究总院

钢铁研究学报(英文版)

CSTPCD

影响因子：0.584

ISSN：1006-706X

年,卷(期)：2024.31(7)