TH36962B - Method for calcining the mixture of mineral materials. - Google Patents

Abstract

DC60 (14/07/54) In order to achieve uniform combustion in the combustion gas flow, a mixture of mineral materials with different grain sizes in a stack with an elongated or rectangular cross-section is produced by changing the direction of the directional separation that occurs during periodic packing, for example, by a trajectory mechanism (25) or a trough, so that the directional grain size distribution changes in layers in the stack column (9'). The direction is changed by rotating the pivot of the trough (24) in the opposite direction (Figure 3). In order to achieve uniform combustion in the combustion gas flow, a mixture of mineral materials with different grain sizes in a stack with an elongated or rectangular cross-section is produced by changing the direction of the directional separation that occurs during periodic packing, for example, by a trajectory mechanism (25) or a trough, so that the directional grain size distribution changes in layers. In the bulk material column (9'), the direction is changed by rotating the pivot of the ramp (24) in the opposite direction (Figure 3).

Claims (10)

1. A method for burning a mixture of mineral materials of different grain sizes in a buck material column (9) where gas flows through and is formed by packing at least one of the stacks (1,2) of a stacked furnace and by removing the combustion products at the bottom of the stack (1,2). It is characterized by the fact that the directional separation that occurs when packing in stages changes with increasing grain size so that the orientation of the oriented grain size in the buck material column (9') changes in layers. 2. The method under claim 1 is characterized by the change in the direction of the increasing particle size occurring by a chute whose feeding direction is periodically reversed by rotation. 3. The method under claim 2 is characterized by the feeding direction of the chute (24) being reversed after each batch-wise emptying of the packing chamber (5) or after several batch-wise emptyings of such packing chambers so that the volume of the stack (35,36) of the stack-type material column (9) with a defined separation distribution in opposite directions corresponds to the volume of one or more batches. 4. Any of the methods under claims 1 through 3 which are characterized by a bidirectional change in feed direction of the rail (24) depending on the cross-sectional length of the shaft (1,2) extending parallel to a plane corresponding to the longitudinal direction of the shaft cross-section. 5. Any of the methods under claims 1 through 4 which are characterized by the orientation of the particle size distribution being altered after one or more complete emptying of the packing chamber (5) in one of the stacks (1,2) of a stacked furnace under a uniflow regenerative process. 6. A chimney furnace for the implementation of the procedure under claim 1, having at least one chimney of longitudinal or rectangular cross-section (1,2), conveyors (8) for delivering the granular material mixture to be burned in a trajectory gas flow (25) in a packing chamber (5) positioned above the chimney (1,2), which is bounded at the bottom by a lid (6) for batch packing of at least one chimney (1,2), which is characterized by a device (23) for periodic redirection in which the particle size of the material mixture in the packing chamber increases transversely to the vertical axis of the chamber so that the particle size distribution formed in the chimney furnace changes in layers in the bulk material column (9). 7. A chimney furnace according to claim 6, which is characterized by the device (23) for periodic direction change being formed by a rail (24) placed on the path (25) and which can rotate axially (26) in opposite tilt directions. 8. A chimney-type furnace according to claim 7, which is characterized by a trough consisting of a plate (24) which is mounted rotatably in the central area of the pilot chamber (27), which is open at the top and bottom and which is positioned above the filling chamber (5) so that, if desired, it is clamped on the walls (28,29) of the pilot chamber (27) which are located at the rear or front in the direction of the trajectory (25) and releases the front and rear discharge openings (33,35) in an alternating manner between the bottom edge of the plate (30) and the bottom opening (31). 9. A chimney furnace according to claim 8, which is characterized by two walls (28, 29) of the pilot chamber (27) facing the lower edge (30) of the plate (24) being sloped inward in its lower area. 10. A chimney furnace under any of the claims 6 through 9, which is characterized by two chimneys (1, 2) of rectangular cross-section and connected by means of a transverse connection (38) for the combustible gases (48), such transverse connection (38) connects the two long sides facing each other of the cross-section of the chimneys (1,2) and the free cross-section of the chimneys (1,2) in each case being filled by a column of bulk material exceeding 6.5 m².