Comprehensive Analysis of High Nitrogen Steel Refining Factors with High-Pressure and Bottom-Blowing Nitrogen

Abstract:

The experimental results on high nitrogen steels refining with high-pressure and bottom-blowing nitrogen were analyzed by the theories of thermodynamics and kinetics in high nitrogen steels smelting. It was shown that nitrogen content in steel increases with the increase of the following factors, that is, pressure, alloying elements (Cr and Mn), bottom-blowing time and bottom-blowing flow. While the nitrogen content in steel decreases with the temperature increase, but it is not obvious. The nitrogen content in steel can also increase with the surface active elements (O and S) decreasing.

• Periodical: Advanced Materials Research (Volumes 146-147)
• Pages: 445-453
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.146-147.445
• Online since: October 2010
• Authors: Gang Qiang Jin, Shu Huan Wang, Yu Feng Guo, Xin Sheng Liu
• Keywords: Apparent Mass Transfer Coefficient, High Nitrogen Steel (HNS), Kinetic, Surface Activity, Thermodynamic

References

[1] Z.Q. Chen. Baosteel Technology in Chinese, No. 5 (2005), p.11~14, 17.

[2] Bern H. Steel Research. Vol 63, No. 8 (1992), p.343.

[3] Rashev T.P. J.L. Xu, H.L. Ge. Translations of High Nitrogen Steels. Shanghai: Shanghai Iron and Steel Institute (1990).

[4] L.M. Lu, H. Li, Y.Q. Zhuang, ect. Iron and Steel Research in Chinese, Vol 8, No. 1(1996), p.6~10.

[5] Z.Q. Zhang, X.Y. Li, Y.C. Lou, ect. Foundry in Chinese, Vol 51, No. 11(2002), p.661~665.

[6] S.P. Liu, S. C Sun. Journal of Chongqing University(Natural Science Edition) in Chinese, Vol 25, No. 5(2002), p.83~85.

[7] X.H. Huang. Metallurgy Industry Press, Beijing. ( 2006) p.386~387.

[8] C.X. Xiang, T. EL. Gammal. Hebei Metallurgy in Chinese, No. 1(1997), p.20~24.