| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for charging a raw material into a bell-less blast furnace, in which when a sintered ore and small lump coke are mixed/charged in the bell-less blast furnace, the burden to be discharged from a furnace top hopper is controlled partially to control a burden distribution in the furnace radial direction.SOLUTION: The method for charging the raw material into the bell-less blast furnace comprises the steps of: conveying a mixture 8 of the first batch, which mixture is prepared by mixing coke in an ore, to a furnace top hopper 3; charging 60-80 mass% of the mixture 8 in the furnace top hopper 3 into the blast furnace by using a swing chute; closing a discharge gate 7 of the furnace top hopper 3 when the residual amount of the mixture 8 in the furnace top hopper 3 becomes 20-40 mass%; throwing a sintered ore 9 of the second batch on the mixture 8 remaining in the furnace top hopper 3; and charging all of the remaining mixture 8 and the sintered ore of the second batch into the blast furnace by using the swing chute. |
