Process for manufacturing molten metal iron
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United States of America Patent
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-
Jan 7, 2003
Grant Date -
Oct 4, 2001
app pub date -
Mar 30, 2001
filing date -
Mar 30, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process comprising: charging a raw material compacting substance containing a carbonaceous reducing agent and an iron oxide contained substance into a moving hearth type furnace; reducing the raw material compacting substance to a reducing ratio 30 to 80% within the reducing furnace to thereby form a shell formed of metal iron or forming a state that a shell formed of metal iron or metal iron are stretched around in a network fashion and a carbonaceous reducing agent remains in a clearance therebetween; agglomerating produced slag containing FeO therein; charging the compacting substance reduced into a melting furnace in a state maintaining a high temperature, and carrying out final reducing and melting to obtain molten meal iron.
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