Method for charging raw materials into blast furnace
AssigneeJfe Steel Corporation
InventorsKazuhira Ichikawa, Yasushi Ogasawara, Takeshi Sato
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AssigneeJfe Steel Corporation
InventorsKazuhira Ichikawa, Yasushi Ogasawara, Takeshi Sato
Estimating the term…
A method for charging raw materials into a blast furnace is provided. The blast furnace includes a bell-less charging device that includes a plurality of main hoppers and an auxiliary hopper. The auxiliary hopper has a smaller capacity than the main hoppers. The method includes discharging ore charged in at least one of the plurality of main hoppers and then sequentially charging the ore from a furnace center side toward a furnace wall side by using a rotating chute. After charging of the ore is started, only the ore is charged from the rotating chute at least until charging of 15 mass % of the ore is completed based on a total amount of the ore to be charged per batch; then discharging of small-size coke charged in the auxiliary hopper is started; and then, the small-size coke is charged together with the ore from the rotating chute.
A method for charging raw materials into a blast furnace, the blast furnace including a bell-less charging device that includes a plurality of main hoppers and an auxiliary hopper at a furnace top portion, the auxiliary hopper having a smaller capacity than the main hoppers,
A method for charging raw materials into a blast furnace, the blast furnace including a bell-less charging device that includes a plurality of main hoppers and an auxiliary hopper at a furnace top portion, the auxiliary hopper having a smaller capacity than the main hoppers,
Dependencies are inferred from the claim text.