| 摘要 |
PURPOSE:To suitably maintain the permeability distribution of charging material and the temp. distribution in a furnace to be desirable to the furnace condition, etc., by adjusting layer thickness distribution and grain size distribution of ore and coke (charging material) in the dividing charging method only by changing the position of movable armor. CONSTITUTION:In the case of two divided charging of the ore, by changing the position of movable armor, the top position of the first charging ore O1 is charged from RO1 to R'O1 and in accordance with this, the layer thickness is changed, but the layer thickness as the total ore layer 1 is not changed, in case the sum of charging ore quantities O1 and O3 at first and second times is fixed. And, the layer thickness of ore layer 1 is fixed only by the surface shape of coke layer 2 at the lower stage and the surface shape of ore O2 layer, and therefore, the layer thickness distribution of charging material is adjusted by adjusting the above arm position at the time of charging the coke in accordance with the shape of the upper face of ore layer 1. Further, by changing the surface shape of ore O1 layer just before charging of ore O2 mixing fine grain, the grain distribution of charging material is adjusted.
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