Patent ID: 7114612
Filing Date: 2006-10-03
Classification: B65G,F26B,F27B,F27D,F28C

Abstract:
1. A method for cooling a layer of hot bulk material that emerges from a firing furnace, comprising: providing a grate carrying the bulk material positioned at a point downstream from a bulk material exit of the firing furnace which comprises a plurality of planks which are elongate in a conveying direction for the bulk material, passing a stream of gas at a temperature lower than the temperature of the hot bulk material through the layer of hot bulk material, driving the plurality of planks in advancing strokes and return strokes in the conveying direction in such a manner that at least two adjacent planks are moved forward simultaneously and are moved back non-simultaneously so as to convey the bulk material in the conveying direction, and measuring conveying parameters separately for the bulk material located on individual planks or a group of adjacent planks and determining the conveying speed of the individual plank or group of planks at least in part as a function of these measurements.