Abstract
In this paper, the converter steelmaking process is studied using numerical simulations and hydraulic model experiments, in order to examine the influence of the angle between the bottom blowing elements and the gas flow rate, on the flow characteristics of the molten pool. A 300t converter is used. The results demonstrated that the mixing time and velocity field distribution, of the molten pool, changed with the angle between the bottom blowing nozzles. Increasing the bottom blowing gas flow rate improved the dynamic conditions of the bath, accelerating the mass transfer process and reducing the volume fraction of the dead zone. Two arrangements with angles of 90° and 105° were applied to two furnace regimes. The industrial experiments showed that a large angle between the nozzles was favorable because it accelerated the decarburization and dephosphorization. This reduced the endpoint carbon–oxygen equilibrium of molten steel and reduced the content of iron oxide and TFe in the endpoint slag.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Zhang MY, Sun XK, Wang GD, Liu XH, Zhang MH (2000) Current conditions and development of application of mathematical simulation technology in China’s iron and steel industry. Res Iron Steel 3:53–58
Liu AH, Li Q, Feng MX, Zou ZS (2003) Water modeling of optimizing blowing technical parameters in LBE. J Mater Metall 2(1):21–24
Choudhary SK, Ajmani SK (2006) Evaluation of bottom stirring system in BOF steelmaking vessel using cold model study and thermodynamic analysis. ISIJ Int 46(8):1171–1176
Chen R, Luo ZG, Yang CG, Zou ZS (2008) A study of water model on size and space distribution of slag dispersed phase on combined blowing of converter. Special Steel 1:13–15
Lou WT, Li Y, Zhu MY (2011) Numerical simulation of gas-liquid two-phase popularity in top-bottom combined blowing converter. Chin J Process Eng 11(6):926–932
Liu F, Zhu R, Dong K, Bao X, Fan SL (2015) Simulation and application of bottom-blowing in electrical arc furnace steelmaking process. ISIJ Int 55(11):2365–2373
Luomala Matti J, Fabritius Timo MJ, Härkki Jouko J (2004) The effect of bottom nozzle configuration on the bath behavior in the BOF. ISIJ Int 44(5):809–816
Lai ZY, Xie Z, Zhong LC (2008) Influence of bottom tuyere configuration on bath stirring in a top and bottom combined blown converter. ISIJ Int 48(6):793–798
Gu L, Irons GA (2001) Physical and mathematical modeling of bottom stirring and gas evolution in electric arc furnaces. Iron Steelmak 28(1):57–68
Hirt CW, Nichols BD (1981) Volume of fraction (VOF) method for the dynamics of free boundaried. J Comput Phys 39:201–225
Launder BE, Spalding DB (1972) Lectures in mathematical model of turbulence. Academic Press, London
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 The Minerals, Metals & Materials Society
About this paper
Cite this paper
Yao, L., Zhu, R., Yu, H., Dong, K., Feng, Q., Tang, Y. (2020). Study of the Influence of the Angle Between the Bottom Blowing Elements on the Dynamic Conditions in a 300t Converter. In: Peng, Z., et al. 11th International Symposium on High-Temperature Metallurgical Processing. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36540-0_31
Download citation
DOI: https://doi.org/10.1007/978-3-030-36540-0_31
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-36539-4
Online ISBN: 978-3-030-36540-0
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)