Method for operating a blast furnace
AssigneeNKK Corporation
InventorsKenji Oya, Shigeru Wakita, Yasukazu Hayasaka, Hajime Wakai
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Abstract
A method for producing a molten iron in a blast furnace comprises the steps of: preparing an optical fiber covered with a metallic tube; measuring a temperature of the molten iron flow discharged from a tap hole of the blast furnace by means of making use of a metallic tube covered by the optical fiber to obtain an information of the temperature of the molten iron; and controlling a heat conditions of the blast furnace, based on the obtained information of the temperature of the molten iron. Controlling a heat conditions is achieved by using a heat conditions estimation model, and by inferring a level and a transition of the heat conditions in the furnace.
Claims21
A method for operating a blast furnace to produce a molten iron comprising the steps of:
- preparing an optical fiber covered with a metallic tube;
- measuring a temperature of molten iron flow discharged from a tap hole of the blast furnace by the optical fiber covered with the metallic tube to obtain information of the temperature of the molten iron;
- and
- controlling heat conditions in the blast furnace based on the obtained information of the temperature of the molten iron.
The method of claim 29, wherein the estimation model of the heat conditions of the blast furnace comprises:
- a knowledge base for inferring the level of the heat conditions in the furnace, including measurement information of the molten iron temperature obtained by the optical fiber, and
- a knowledge base for inferring the transition of the heat conditions in the furnace, including measurement information of the molten iron temperature obtained by the optical fiber and measurement information obtained by a sensor in the blast furnace.
Dependencies are inferred from the claim text.