Abstract
The steelmaking field has been seeing an increased demand of reducing hydrogen and nitrogen in liquid steel before casting. This is often accomplished by vacuum treatment. This paper focuses on developing a numerical model to investigate the removal of hydrogen and nitrogen from the melt of medium carbon steel in a commercial vacuum tank degasser. An activity coefficient model and the eddy-cell expression are implemented in the ANSYS FLUENT code to compute the activities of related elements and mass transfer coefficients of hydrogen and nitrogen in liquid steel. Several cases are simulated to assess the effect of gas flow rate and initial nitrogen content in liquid steel on degassing process and the calculated results are compared with industrial measured data.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference18 articles.
1. S. Misra, Y. Li and I. Sohn: Iron & Steel Technol., November (2009), p.43.
2. Information on http: /www. keytometals. com.
3. T. Kitamura, K. Miyamoto, R. Tsujino, S. Mizoguchi and K. Kato: ISIJ Int. Vol. 36 (1996), p.395.
4. B. Kleimt, S. Köhle, K.P. Johann, A. Jungreithmeier and J. Molinero: Scand. J. of Metall. Vol. 29 (2000), p.194.
5. M. Hallberg, L. Jonsson, P.G. Jönsson and P. Undvall: Stahl und Eisen, Vol. 125 (2005), p.39.
Cited by
15 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献