Nitrogen alloying of liquid steel by gas injection in the ladle and/or converter

H. Lachmund; B. Prothmann; D. Huin; H. Saint Raymond; H. Gaye

doi:10.1051/metal/199895040487

All issues

Volume 95 / No 4 (Avril 1998)

Rev. Met. Paris, 95 4 (1998) 487-500

Abstract

Issue		Rev. Met. Paris Volume 95, Number 4, Avril 1998


Page(s)		487 - 500
DOI		https://doi.org/10.1051/metal/199895040487
Published online		17 January 2017

Rev. Met. Paris, Vol. 95, N°4 (Avril 1998), pp. 487–500

Nitrogen alloying of liquid steel by gas injection in the ladle and/or converter^*

Nitruration de l'acier par barbotage d'azote en poche et au convertisseur

H. Lachmund, B. Prothmann, D. Huin, H. Saint Raymond and H. Gaye

Abstract

Trials of nitrogen alloying of liquid steel by bottom nitrogen-gas injection during the post-blow stir in the converter, and in the steel ladle at atmospheric pressure and under vacuum were performed in the steel plant of the AG der Dillinger Hüttenwerke.

A unified model, valid for both converter and steel ladle was developed to describe nitrogen pickup in liquid steel by gas injection. By a tailored nitrogen stirring in the converter and/or ladle, it is possible to reach an aimed nitrogen range with good accuracy.

^*

Subject of a presentation at the 1997 ATS International Steelmaking Conference (Paris, December 9-10, 1997, Session 3).

© La Revue de Métallurgie 1998

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