Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal
Patent
1996-08-28
1998-09-22
Andrews, Melvyn
Specialized metallurgical processes, compositions for use therei
Processes
Producing or treating free metal
423439, C22B 102, C01B 3130
Patent
active
058109064
ABSTRACT:
The present invention provides a two-stage method for pretreating an iron oxide-containing feed material prior to conversion of the material into an iron carbide-containing product. The feed material is heated in the first stage in an oxidizing atmosphere to volatilize and/or thermally stabilize sulfide sulfur and evaporate moisture and heated in a reducing atmosphere in the second stage to reduce ferric iron to ferrous iron. The reduced material is then introduced into a system in which the iron oxides are substantially converted to iron carbide.
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Andrews Melvyn
Iron Carbide Holdings, Ltd.
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