APPARATUS FOR GRANULATION OR COATING

摘要

A spouting bed particle-coating or a particle-granulating apparatus comprises a vertical, usually cylindrical vessel 1 with an inverted cone or like configuration at the lower part provided with a gas-gushing port 4 at the lowermost part, a guide pipe 2 provided inside the vessel concentrically therewith and a spray nozzle 5 for spraying a coating solution or particle-growing material. The apparatus is provided with at least one obstacle member 3 which hinders pressure transmission by heaped particles inside the layer of particles formed between the inner wall surface of the vessel and the outer wall surface of the guide pipe, but substantially does not hinder the particles from descending within the layer.