Method of producing molten iron
AssigneeJfe Steel Corporation
InventorsKoichi TSUTSUMI, Yoshihiro MIWA, Yosuke TAKADA, Wataru TODO, Sumito OZAWA, Hideo KIJIMA
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Abstract
Molten iron is obtained with a low electric power consumption rate by efficiently and reliably preheating a cold iron source by ascertaining the preheating state of the cold iron source. A method of producing molten iron in an electric furnace having a preheating chamber and a melting chamber includes: a cold iron source feeding step; a cold iron source preheating step having a preheating confirmation step; a supply step; and a melting step.
Claims15
A method of producing molten iron in an electric furnace having a preheating chamber and a melting chamber, the method comprising:
- a cold iron source feeding step of feeding a cold iron source into the preheating chamber;
- a cold iron source preheating step of preheating the cold iron source fed in the cold iron source feeding step to a predetermined temperature by an exhaust gas generated in the melting chamber to be a preheated iron source,
- wherein the cold iron source preheating step includes a preheating confirmation step to confirm that the cold iron source is a preheated iron source that has been preheated to the predetermined temperature;
- a supply step of supplying the preheated iron source that has been confirmed to be preheated to the predetermined temperature in the preheating confirmation step to the melting chamber;
- and
- a melting step of melting the preheated iron source supplied to the melting chamber in the supply step by arc heating.
Dependencies are inferred from the claim text.