The production of steels applying 100% DRI for nitrogen removal, the experience of ArcelorMittal Lazaro Cardenas Flat Carbon

R. Lule, F. Lopez, J. Espinoza, R. Torres, R. D. Morales

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

8 Scopus citations

Abstract

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.

Original languageEnglish
Title of host publicationAISTech 2009 - Proceedings of the Iron and Steel Technology Conference
Pages489-498
Number of pages10
StatePublished - 2009
Externally publishedYes
EventIron and Steel Technology Conference, AISTech 2009 - St. Louis, MO, United States
Duration: 4 May 20097 May 2009

Publication series

NameAISTech - Iron and Steel Technology Conference Proceedings
Volume1
ISSN (Print)1551-6997

Conference

ConferenceIron and Steel Technology Conference, AISTech 2009
Country/TerritoryUnited States
CitySt. Louis, MO
Period4/05/097/05/09

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