| 摘要 |
PURPOSE: A method for controlling weighing of nut coke in a blast furnace is provided to restrain obstruction of air-permeability in a blast furnace and improve working efficiency by weighing nut coke first and then sintered ore, thereafter charging them into the blast furnace. CONSTITUTION: A method for controlling weighing of nut coke in a blast furnace comprises the steps of judging whether or not nut coke should be used, setting a charging amount of nut coke and weighing the nut coke as much as the set amount in the last weighing hopper (32-8) in case of using nut coke as a result of the judgement, weighing sintered ore as much as the preset target amount and charging into the last weighing hopper (32-8) when weighing of the nut coke is completed, operating the last weighing hopper (32-8) more preferably than other weighing hoppers when weighing of the nut coke and sintered ore is completed, and loading at the front of a conveyor belt (34), and controlling operation of the other weighing hoppers so that sintered ore stored in other weighing hoppers is loaded on the conveyor belt (34) when discharging of nut coke is completed.
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