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| Mathematical Model of RH Blow Argon Mode Affecting:Decarburization Rate in Ultra-Low Carbon Steel Refining |
| LI Chong-wei1,CHENG Guo-guang2,WANG Xin-hua2,ZHU Guo-sen3,CUI Ai-min3 |
1. Beijing Beiye Functional Materials Corporation, Beijing 100192, China
2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
3. Shougang Qian��an Iron and Steel Co Ltd, Qian��an 064400, Hebei, China |
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Abstract A mathematical model in present study has been established to investigate the effect of Rheinstahl Heraeus (RH) blow argon mode on the decarburization rate in ultra-low carbon steel refining based on the RH equipment of Shougang Qian��an Iron and Steel Co Ltd (SQISCO). The calculated results show that the increase of argon flowrate promotes the carbon elimination from argon gas bubble surface, molten steel free surface in vacuum as well as splash droplet surface, while reduces that from the interior of liquid steel. It has been found the critical turning point of flowrate ascension is at the 5th minute and the optimum blow argon flowrate in later stage is 2100 L/min in accordance with the 2 stages argon blow mode, which have been confirmed in the commercial production in SQISCO.
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Received: 29 March 2011
Published: 29 May 2012
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Corresponding Authors:
LI Chong-Wei
E-mail: lichongwei_423@yahoo.com.cn
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2012, Vol. 19 
