C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 31/30 (2006.01) C21B 13/00 (2006.01)
Patent
CA 2216993
The present invention provides method and apparatus capable of producing iron carbide having any quality, both quickly and economically. The method of producing iron carbide(Fe3C) comprises reducing and carburizing iron-containing raw materials for iron making such as iron ore and the like containing iron oxides (e.g. hematite) and iron hydroxides as main components. The hematite is partially reduced to a reduction ratio of 50 to 65% by a gas containing mainly hydrogen in a first stage of the reaction process, then the partially reduced hematite is further reduced and carburized by - a gas containing mainly hydrogen and methane in a second stage of the reaction process to provide iron carbide.
Procédé de production de carbure de fer (FE3C) par réduction et cémentation d'un matériau ferrifère permettant d'obtenir du fer, par exemple des minerais à base d'oxydes de fer, tels que l'hématite (Fe2O3), ou d'hydroxydes de fer. Le procédé consiste en une première étape de réaction pour la réduction incomplète de l'hématite avec un gaz constitué principalement d'hydrogène, jusqu'à obtenir un pourcentage de réduction de 50 à 65 %, et en une deuxième étape de réaction achevant la réduction avec un gaz constitué principalement d'hydrogène et méthane, suivie de la cémentation.
Iijima Satoru
Inoue Eiji
Miyashita Torakatsu
Nakatani Junya
Nakazawa Teruyuki
Kawasaki Jukogyo Kabushiki Kaisha
Kirby Eades Gale Baker
Mitsubishi Corporation
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