| 摘要 |
PURPOSE:To reduce fuel for ignition and to obtain sintered ore having god quality by spraying powder coke in a half-molten state to the front layer of the compounded raw material supplied into a pallet and burning the powder coke. CONSTITUTION:The compound raw material 1 is fed from a hopper 2 and is continuously supplied onto the pallet 11. The pallet 11 moves at a low speed and the front layer of the material 1 is ignited in an ignition furnace 5. A preheating furnace 13 is provided in front of the furnace 5 and the powder coke 9 which is made into the half-molten state by a burner 8 is sprayed onto the front layer of the material 1. The powder coke 12 welded in the half-molten state is thereafter ignited in the furnace 5 by which the sintered ore is produced. Plural pieces of the burners 8 are provided at equal intervals in the transverse direction of the pallet 11. The ratio of the coke powder to be added to the compounded raw material is reduced by as much as the amt. of the powder coke 9 to be sprayed from the burners 8. The fuel to be used in an ignition burner 6 is considerably reduced by such method.
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