Method for operation of blast furnace
AssigneeKabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
InventorsShoji IKUTA, Akito KASAI
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Abstract
A method for a blast furnace includes pulverizing coal to make pulverized coal, and pulverizing iron ore to make pulverized iron ore, and injecting the pulverized coal and the pulverized iron ore from a tuyere. A loss on ignition of the iron ore is greater than or equal to 9% by mass and less than or equal to 12% by mass, an injection rate of the pulverized coal is greater than or equal to 150 kg/tp, and an injection rate of the pulverized iron ore is greater than or equal to 2.5 kg/tp and less than or equal to 50.0 kg/tp.
Claims2
A method for operation of a blast furnace, the method comprising:
- pulverizing coal to make pulverized coal, and pulverizing iron ore to make pulverized iron ore;
- and
- injecting the pulverized coal and the pulverized iron ore from a tuyere, characterized in that a loss on ignition of the iron ore is greater than or equal to 9% by mass and less than or equal to 12% by mass,
- an injection rate of the pulverized coal is greater than or equal to 150 kg/tp, and
- an injection rate of the pulverized iron ore is greater than or equal to 2.5 kg/tp and less than or equal to 50.0 kg/tp.
Dependencies are inferred from the claim text.