Numerical simulation of Al<sub>2</sub>0<sub>3</sub> deposition at a nozzle during continuous casting

Fangming Yuan; Xinghua Wang; Jiongming Zhang; Li Zhang

doi:10.1016/S1005-8850(08)60043-2

Volume 15 Issue 3

Jun. 2008

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International Journal of Minerals, Metallurgy and Materials > 2008 > 15(3): 227-235. > DOI: 10.1016/S1005-8850(08)60043-2

Fangming Yuan, Xinghua Wang, Jiongming Zhang, and Li Zhang, Numerical simulation of Al₂0₃ deposition at a nozzle during continuous casting, J. Univ. Sci. Technol. Beijing , 15(2008), No. 3, pp.227-235. https://dx.doi.org/10.1016/S1005-8850(08)60043-2

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Metallurgy

Numerical simulation of Al₂0₃ deposition at a nozzle during continuous casting

Fangming Yuan^1,2), ,,
Xinghua Wang¹⁾,
Jiongming Zhang¹⁾ and
Li Zhang³⁾

Author Affilications

School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
Metallurgical Equipment Company of China(MECC), Sinosteel Corporation, Beijing 100080, China
Baosteel Advanced Technology Institute, Baoshan Iron & Steel Co., Ltd., Shanghai 201900, China

Funds:

This study was financially supported by the State Economic and Trade Commission of China (No.01BK-098-02-07).

Received: 04 June 2007; Available Online: 13 June 2021

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Abstract

Abstract

The effects of various factors, such as argon flow rate and slide gate opening ratio, on the alumina deposition rate were researched by the numerical simulation method. The pressure in the nozzle is significantly affected by argon flow rate and slide gate opening ratio. To keep positive pressure in the nozzle, the argon flow rate should be increased with a decrease in slide gate opening ratio. The effect of argon flow rate on the alumina deposition rate depends on the condition of opening ratio or casting speed. The effect of increasing the argon flow rate on the deposition rate is not obvious when the opening ratio is small. The Al₂0₃ deposition rate decreases significantly with an increase in argon flow rate when the argon flow rate is low, but it decreases slowly when the argon flow rate reaches a certain value. The alumina deposition rate is linear with alumina content at different slide gate opening ratios and argon flow rates. The observed thickness of the deposition layer at the bottom and outlet of a real clogged nozzle is almost equal to the result of the numerical simulation.
- continuous casting,
- nozzle,
- clogging,
- numerical simulation

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