| 摘要 |
PURPOSE:To improve the productivity of sintered ore and to stabilize quantity by adjusting moisture, the suction force of a main exhauster, etc., so that the predicted value of a combustion rate based on the moisture, etc., of a sintering raw material and the voids of the packed layer in the stage of charging to a pallet of a sintering machine coincides with a target value. CONSTITUTION:The raw material apparent dry density rho, grain size (d), grain size dispersion measure Sd and water absorptivity x0 of an arithmetic unit 10 based on the raw material in a raw material tank 1 and the initial moisture content x3 of the raw material, the raw material temp. T1 in a surge hopper 3 and moisture content x4 of an arithmetic unit 20 based on the water added in a mixer 2, etc., are inputted to a combustion rate control device 19. The voids of the packed layer 9 in the stage of charging to the pallet 6 of the sintering machine, the height of the packed layer 9 and the suction force of the main exhauster 8 are also inputted thereto and the combustion rate of the raw material prior to charging to the pallet is predicted. The following terms are respectively selected and controlled in such a manner that the predicted value coincides with the target value Vfo: The moisture of the raw material is adjusted by an added moisture detector 11, the charging bulk height by a charging bulk height controller 12, the packed layer height by a packed layer 9 height detecting and adjusting device 13 and the suction force of the main exhauster 8 by a suction pressure controller 15.
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