Abstract: A fluidized-bed granulating apparatus which granulates powdered or granular raw materials by centrifugally tumbling and fluidizing them on a rotor rotating in a container and by supplying a gas from a lower portion of the container. The container and the rotor are supported by a horizontally movable wagon, are vertically and movably supported by a lift-up device, and can be attached to and separated from the lower portion of a body of the fluidized-bed granulating apparatus. The rotor is rotated by a motor provided outside the granulating apparatus, and the driving force of the motor is transmitted from the output shaft thereof to the rotor through a universal joint, a transmission shaft, and a reduction gear. When the container and the rotor are attached to and separated from the lower portion of the body of the graulating apparatus, the universal joint is similarly attached to and separated from the transmission shaft.