... to the grain size requirement, is designed for circulating fluidized bed boiler in power plant and ... PG, 4 PG, 6 PG, one machine can complete the thick, medium and fine crushing, namely " ... series crusher Crushing ratio large, without any requirements for the material’s moisture. Not sticky not plugging ... coal,anthracite, lignite, and gangue,also can used for the sinter, coke, slag, shale and limestone, ...