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 2 100 L/min in accord- ance with the 2 stages argon blow mode, which have been confirmed in the commercial production in SQISCO.
参考文献
| [1] | Masamitsu T;Hiroshi M;Tadashi S .Mechanism of Decar- burization in RH Degasser[J].ISIJ International,1995,35(12):1452. |
| [2] | YU Neng-wen.Mathematical and Physical Modeling of Multi function RH Refining Process ED3[M].上海:上海大学,2001 |
| [3] | The Japan Society for the Promotion of Science.Steelmaking Data Sourcebook[M].New York:GBSP Publishers,1984 |
| [4] | LI Chong-wei;CHENG Guo-guang;WANG Xin-hua.The Establishment of RH Natural Decarburization Mathematical Model and the Study of Mechanism of Decarburization[J].Journal of the Chinese Rare Earth Society,2010(03):112. |
| [5] | Levich V G.Physicochemical Hydrodynamics[M].Engle-wood Cliffs:Prentice-Hall Inc,1962 |
| [6] | Harashima K;Mizoguchi S;Kajioka H .Kinetics of Decaburi- zation of Low Carbon Liquid Iron under Reduced Pressures[J].Tetsu To Hagane-Journal of the Iron & Steel Institute of Japan,1988,74:449. |
| [7] | Park Y.G.;Doo W.C. .Numerical Calculation of Circulation Flow Rate in the Degassing Rheinatahl-Heraeus Process[J].ISIJ International,2000(8):749-755. |
| [8] | Wallis G B;Mcgraw-Hill.One-Dimensional Two-phase Flow[M].New York,1969 |
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