2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 1: D'Abreu Intl. Symp. / Iron and Steel Making

Editors:Kongoli F, Noldin JH, Takano C, Lins F, Gomez Marroquin MC, Contrucci M
Publisher:Flogen Star OUTREACH
Publication Year:2016
Pages:320 pages
ISSN:2291-1227 (Metals and Materials Processing in a Clean Environment Series)
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    Simultaneous Metallization and Carburization in Shaft Furnaces. From Experimentals to Modelling

    Edelink Falero1; Jose Carlos D’Abreu1; Mauricio Otaviano2;
    1PUC-RIO, Rio de Janeiro, Brazil; 2SAMARCO MINING COMPANY, Ubu, Brazil;
    Type of Paper: Regular
    Id Paper: 99
    Topic: 2


    Currently the production and use of DRI are increasing in developed countries, mainly due to the reduced price of natural gas and the success of the new shale gas extraction technology. In addition, the lower level of DRI contaminants than in scraps, led the former to be considered a good alternative as a metallic burden for Electric Arc Furnace (EAF) and LD / BOF converters.
    Operating costs and environmental problems are actually important technological factors to be considered in the optimization of DRI production. Therefore, the carbon content of DRI has become one of that, due to the ability to generate chemical energy in steel bath, thus complementing the electricity in EAFs, and the exothermic contributions of Si and C oxidation in the LD.
    This work is part of a whole cooperation program between Samarco Mining Company and the Iron & Steelmaking Research Group of the Pontifical Catholic University of Rio de Janeiro / PUC-Rio, dealing with the kinetic equations for the simultaneous metallization and carburization in DR shaft furnaces. For this purpose, the reactor was divided into three internal zones: Reduction, Transition and Cooling zones. Additionally, were also considered three concentric regions: peripheral, media and center. Using the results for a specific RD pellet, gas mixtures used in the industrial plants and fluid dynamic similarities of the process, the metallization and carburization kinetic equations were established for each zone. A computational program-METCARB, fully based on those kinetic equations, was then conceived. Finally, the further validation was proceeded taking into account two industrial operational runs.


    Blast; Ferrous; Furnace; Metallurgy; Modeling; Pellets; Steel; Technology;


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    Falero E, D’Abreu J, Otaviano M. Simultaneous Metallization and Carburization in Shaft Furnaces. From Experimentals to Modelling. In: Kongoli F, Noldin JH, Takano C, Lins F, Gomez Marroquin MC, Contrucci M, editors. Sustainable Industrial Processing Summit SIPS 2016 Volume 1: D'Abreu Intl. Symp. / Iron and Steel Making. Volume 1. Montreal(Canada): FLOGEN Star Outreach. 2016. p. 198-213.