Abstract: An apparatus for cooling bulk material with a grate flowed through by cooling gas. The apparatus comprises a plurality of planks configured to move forward and back in the direction of conveyance and, between the planks, a sealing device having spatially separate outer and inner sealing elements. The sealing device has between the sealing elements a conveying duct, which runs along the length of the planks and on which a gas supply is configured to produce a gas stream along the length of the conveying duct. Bulk material which has infiltrated through the outer sealing element can be transported away before it can reach and migrate through the inner sealing element. The accompanying sealing effect can considerably reduce the undesirable material through-fall, while enabling the use of low-wearing seals, which provide excellent wear resistance.

Abstract: An apparatus for cooling bulk material with a grate flowed through by cooling gas. The apparatus comprises a plurality of planks configured to move forward and back in the direction of conveyance and, between the planks, a sealing device having spatially separate outer and inner sealing elements. The sealing device has between the sealing elements a conveying duct, which runs along the length of the planks and on which a gas supply is configured to produce a gas stream along the length of the conveying duct. Bulk material which has infiltrated through the outer sealing element can be transported away before it can reach and migrate through the inner sealing element. The accompanying sealing effect can considerably reduce the undesirable material through-fall, while enabling the use of low-wearing seals, which provide excellent wear resistance.

Abstract: The invention includes a method and an apparatus for treating, in particular cooling, a layer of bulk material by means of a stream of gas passed through it on a grate. The grate includes a plurality of elongated planks which extend in a conveying direction and are driven in advancing and return strokes in the conveying direction in such a manner that at least two adjacent planks are moved forwardly simultaneously and are moved backwardly non-simultaneously. Since the material located on a plank which is being moved back is prevented from completely following the plank moving back by the friction generated with the material located above the adjacent planks or with the wall, the conveying effect in the conveying direction outweighs the conveying effect in the opposite direction.

Abstract: The invention includes a method and an apparatus for treating, in particular cooling, a layer of bulk material by means of a stream of gas passed through it on a grate. The grate includes a plurality of elongated planks which extend in a conveying direction and are driven in advancing and return strokes in the conveying direction in such a manner that at least two adjacent planks are moved forwardly simultaneously and are moved backwardly non-simultaneously. Since the material located on a plank which is being moved back is prevented from completely following the plank moving back by the friction generated with the material located above the adjacent planks or with the wall, the conveying effect in the conveying direction outweighs the conveying effect in the opposite direction.

Abstract: The invention includes a method and an apparatus for treating, in particular cooling, a layer of bulk material by means of a stream of gas passed through it on a grate. The grate includes a plurality of elongated planks which extend in a conveying direction and are driven in advancing and return strokes in the conveying direction in such a manner that at least two adjacent planks are moved forwardly simultaneously and are moved backwardly non-simultaneously. Since the material located on a plank which is being moved back is prevented from completely following the plank moving back by the friction generated with the material located above the adjacent planks or with the wall, the conveying effect in the conveying direction outweighs the conveying effect in the opposite direction.

Abstract: The invention includes a method and apparatus for treating, in particular cooling, a layer of bulk material by means of a stream of gas passed through it on a grate. The grate includes a plurality of elongated planks which extend in a conveying direction and are driven in advancing 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. Since the material located on a plank which is being moved back is prevented from completely following the plank moving back by the friction generated with the material located above the adjacent planks or with the wall, the conveying effect in the conveying direction outweighs the conveying effect in the opposite direction.

Abstract: The invention includes a method and an apparatus for treating, in particular cooling, a layer of bulk material by means of a stream of gas passed through it on a grate. The grate includes a plurality of elongated planks which extend in a conveying direction and are driven in advancing and return strokes in the conveying direction in such a manner that at least two adjacent planks are moved forwardly simultaneously and are moved backwardly non-simultaneously. Since the material located on a plank which is being moved back is prevented from completely following the plank moving back by the friction generated with the material located above the adjacent planks or with the wall, the conveying effect in the conveying direction outweighs the conveying effect in the opposite direction.

Abstract: Method and apparatus for treating, in particular cooling, bulk material which is lying on a conveying grate (10) in the form of a layer (20). The gas is passed through the grate (10) and the layer (20) from the bottom upward. The grate is moved forward and back in its entirety, with the layer of material (20) being held in place during the return stroke. The stroke frequency is selected to be sufficiently low for there to be substantially no vertical mixing of the layer of material (20). A blocking plate (30) or the like is provided for the purpose of holding the layer (20) in place. The avoidance of the vertical relative movement within the layer of material (20) improves the heat recovery.

Abstract: A cooling grate for bulk material, having a carrying plate for accommodating a layer of the material for cooling, and having conveying elements by means of which the material for cooling is conveyed in a conveying direction on the resting carrying plate and which comprise pushers, which are arranged in a movable manner on that side of the carrying plate which is subjected to the action of material for cooling, and a drive, which is arranged on the other side of the carrying plate and is intended for executing a lifting movement, each pusher being assigned an opening in the carrying plate and a transmission member, which is guided thereby and connects the pusher to the drive. The carrying plate is provided, at the openings, with in each case one collar, which at least at the front and rear, as seen in the conveying direction, has a seal acting between the transmission member and collar.

Abstract: Method and apparatus for treating, in particular cooling, a layer of bulk material by means of a stream of gas passed through it on a grate. The grate comprises a plurality of planks (10) which are elongate in a conveying direction and are driven to and fro in the conveying direction in such a manner that at least two adjacent planks (10) are moved forward simultaneously and are moved back non-simultaneously. Since the material located on a plank (10) which is being moved back is prevented from completely following the plank moving back by the friction generated with the material located above the adjacent planks or with the wall (1), the conveying effect in the conveying direction outweighs the conveying effect in the opposite direction.

Abstract: A cooling grate for a bulk-material cooler, in particular for combustion material (8) such as cement clinker, of which the top side forms a carrying surface which supports the combustion material (8) which is to be cooled, the cooling grate (1) being made up of a plurality of fixed shaped profiles (4) which partially engage one over the other and between which gas-throughflow channels (5) are formed, it being the case that the shaped profiles (4) are of the same shape and have a central part (41) and outer parts (42, 43) which are angled in opposite directions to the central part (41), the shaped profiles (4) being arranged such that in each case one of the gas-throughflow channels (5) is formed between in each case one of the outer parts (42′, 43) of two directly adjacent shaped profiles (4, 4′). There is preferably provided a support (3) which has position-defining mounts (36) for the shaped profiles (4).

Abstract: A cooling grate for bulk material, having a carrying plate (2) for accommodating a layer (8) of the material for cooling, and having conveying elements by means of which the material for cooling (8) is conveyed in a conveying direction (81) on the resting carrying plate (2) and which comprise pushers (5), which are arranged in a movable manner on that side of the carrying plate (2) which is subjected to the action of material for cooling (8), and a drive (3), which is arranged on the other side of the carrying plate (2) and is intended for executing a lifting movement (9), each pusher (5) being assigned an opening (22) in the carrying plate (2) and a transmission member (4), which is guided thereby and connects the pusher (5) to the drive (3), it being the case that the carrying plate (2) is provided, at the openings (22), with in each case one collar (23), which at least at the front and rear, as seen in the conveying direction (81), has a seal (7) acting between the transmission member (4) and collar (23).

Abstract: Method and apparatus for treating, in particular cooling, bulk material which is lying on a conveying grate (10) in the form of a layer (20). The gas is passed through the grate (10) and the layer (20) from the bottom upward. The grate is moved forward and back in its entirety, with the layer of material (20) being held in place during the return stroke. The stroke frequency is selected to be sufficiently low for there to be substantially no vertical mixing of the layer of material (20). A blocking plate (30) or the like is provided for the purpose of holding the layer (20) in place. The avoidance of the vertical relative movement within the layer of material (20) improves the heat recovery.