The take in air is processed from the inlet heating unit through filter and heated, and blow up the material uniformly and dried by the hot air. In case of fluidized granulation, the binder is sprayed from the peristaltic pump through the spray gun into the chamber onto the product surfaces. The product coheres together by the binder which forms the binder bridge for form the core granules and grows up and formed. The binder bridge is evaporated away by the hot air and the evenly dried granules formed.