ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Synthesis of Iron Carbide by Reaction of Iron Ores with H2-CO Gas Mixtures Bearing Traces of Sulfur
Shoji HayashiYoshiaki Iguchi
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1997 Volume 37 Issue 1 Pages 16-20


Particles of hematite ores in a porcelain boat were reduced and carburized at 823∼1223K by H2-CO mixtures under low sulfur pressures where metallic iron remained stable.Within major of these various conditions nearly one hour reaction could convert their particles completely to iron carbides such as mostly Fe3C. It was found that traces of gaseous sulfur makes iron carbides enough stable rather than free carbon or metallic iron. Their conversion yields were insensitive to inlet H2/CO mole ratio and ore type. Total sulfur contents in products obtained for lower sulfur pressures were as low as conventional reduced irons.

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