Apparatus for producing iron carbide

Details Apparatus for producing iron carbide Apparatus for producing iron carbide

1998-04-30

2000-06-06

Andrews, Melvyn

Metallurgical apparatus

Means for treating ores or for extracting metals

By means applying heat to work, e.g., furnace

C22B 110

Patent

active

060714689

ABSTRACT:
An apparatus and method of producing iron carbide of predetermined quality is disclosed. The method of producing iron carbide (Fe.sub.3 C) comprises reducing and carburizing an iron-containing raw material containing iron oxides (e.g., hematite) or iron hydroxides as main components, wherein the raw material 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 raw material is further reduced and carburized with a gas containing mainly hydrogen and methane in a second stage of the reaction process to provide iron carbide.

REFERENCES:
patent: 5137566 (1992-08-01), Stephens, Jr. et al.
patent: 5527379 (1996-06-01), Hirsch et al.
patent: 5603748 (1997-02-01), Hirsch et al.
patent: 5837031 (1998-11-01), Miyashita et al.
Derwent WPI Acc No: 95-255958/199534 Jul. 27, 1994.

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