Resumen
ArcelorMittal Lázaro Cardenas Flat Carbon has been the steelmaking shop pioneer in the World producing the most of its steel grades applying 100% DRI. This technology allows the steel production with low Nitrogen content (30-35 ppm for LCAlK and 35-45 ppm for API X steel grades). It has been established that the main methods for Nitrogen removal are: Carbon Oxidation and the Usage of high proportions of DRI. The usage of 100% DRI promotes since the beginning of the heat a very important CO evolution that protects the metal bath from the air filtration. The high Carbon contained in the DRI is one of the key of success because promote a vigorous foaming slag formation through all the heat. The variation in the %C in the DRI and its effect in the final Nitrogen in the steel will be discussed in this presentation. A mathematical model for phosphorus reaction and nitrogen evolution is applied in order to explain the results.
Idioma original | Inglés |
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Título de la publicación alojada | AISTech 2009 - Proceedings of the Iron and Steel Technology Conference |
Páginas | 489-498 |
Número de páginas | 10 |
Estado | Publicada - 2009 |
Publicado de forma externa | Sí |
Evento | Iron and Steel Technology Conference, AISTech 2009 - St. Louis, MO, Estados Unidos Duración: 4 may. 2009 → 7 may. 2009 |
Serie de la publicación
Nombre | AISTech - Iron and Steel Technology Conference Proceedings |
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Volumen | 1 |
ISSN (versión impresa) | 1551-6997 |
Conferencia
Conferencia | Iron and Steel Technology Conference, AISTech 2009 |
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País/Territorio | Estados Unidos |
Ciudad | St. Louis, MO |
Período | 4/05/09 → 7/05/09 |