| 摘要 |
<p>The invention relates to a method and a device for treating, especially cooling, a layer of bulk material on a grid by means of a flow of gas led through it. The grid comprises a plurality of planks (10), elongate in the direction of conveyance and driven to reciprocate in the direction of conveyance in such a manner that at least two adjoining planks (10) are moved forth simultaneously and are moved back at different times. Since the material present on the plank (10) moved back is prevented from completely following the plank moved back due to the friction on the material present on the adjoining planks or on the wall (1), the conveying effect in the direction of conveyance is greater than that in the opposite direction.</p> |
