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    • 1. 发明公开
    • A METHOD AND A SYSTEM FOR PRODUCING A LIGHTWEIGHT CERAMIC AGGREGATE, PARTICULARLY FROM COAL ASH
    • 方法和系统产生光陶瓷单元,尤其是煤灰
    • EP3080535A2
    • 2016-10-19
    • EP14827564.7
    • 2014-10-23
    • LSA Sp. z.o.o.
    • LUCZAJ, KrzysztofSOKOLOWSKI, JanuszSWITKA Krzysztof JanKABACINSKI, Michal
    • F27B7/20C04B18/02
    • C04B35/447B02C7/00C04B18/023C04B35/64C04B2235/34F27B7/20Y02W30/92Y02W30/93Y02W30/95Y02W30/96C04B14/10C04B18/08C04B18/084C04B18/10C04B18/12C04B18/167C04B18/20C04B22/144
    • A system for producing a lightweight ceramic aggregate, particularly from coal ash according to the invention is characterized in that it is composed of a transporting-sorting device (1) acquiring coal ashes or ashes from combusting coal mixed with biomass ashes, or ashes from co-combusting biomass, coal and phosphogypsum preferably in an amount of up to 50% by weight, from dumps, the device (1) cooperating with an excavator (2), preferably a multibucket excavator, which, by means of a weighting conveyor (3), transfers the batch material to a transporting device, preferably a paddle-type device with a heating functionality, also playing a role of a stirrer and an initial shredder (4), from where the mixture is transported to an intermediate container (5) with a weighting functionality by means of a vertical conveyor, preferably a screw conveyor with a transporting belt without the central shaft, where also the stream of the separated granulated material is directed from granulators (6) as well as the dusts from the dust collector (7), preferably a cyclone, removed from the stream of the gases heating up the batch in the transporting conveyor (4), preferably a paddle conveyor. Further, the mixture of the raw materials is fed, through a magnetic separator (8) of metallic contaminants, two-stage crushing assembly (9), preferably composed of two drum crushers, correspondingly (9.1) and (9.2), and an inter-operation one board relieving screen (9.3), to a stirrer (10), preferably a screw stirrer, preferably a two shaft stirrer, and completed with agglomeration promoting agents taken from storage silos (11) and weighted in the weighting conveyor (12) and then moistened by water supply (13). Further, through a moisture content meter (14), by means of a dosing conveyor (15), preferably a screw conveyor, the mixture enters a system of granulators (6), preferably disk granulators, on the surface of which it is moistened by mist from water nozzles (16), and then, after overflowing over the side walls of the disks of the granulators (6), it is directed to a screen (17), from which overgrains and undergrains are returned to the intermediate container (5), whereas the grains of appropriate size are transported by a distributing conveyor (18) to the highest shelf of the drier (19), preferably a known counterflow drier with movable shelves according to P393175, wherein the drying agent are exhaust gases from the burning and sintering process in the sintering device (21), cooled down by atmospheric air in the cooling bed (20). Further from the drier (19) the grains are led to the chute of the sintering device (21), preferably a known rotary oven according to patent 196842, from where they pour over a pile-up baffle (21A) of the sintering device (21) to the cooling bed (20) and further through the final conveyor (25) to the storage yard (26).