To prevent piece of a substance to be dried being broken during rotation of a rotor from piercing directly through the inner surface of a chamber.

A back net 9 formed of a wire-netting made of stainless steel is situated in a manner to surround a carrier 31 is situated at the outer peripheral part of a rotor 21 and a sheet-form protection sheet 5 made of a resin is situated on the inner peripheral surface of a chamber 2 in a manner to surround the rotor 21. When the rotor 21 is rotated, the carrier 31 is rotated integrally with the rotor 21 and a moisture content adhered on the surface of a substance 40 to be dried contained in the carrier 31 is removed through the action of a centrifugal force. When a load generated by a centrifugal force is applied on the surface part of the substance 40 to be dried during rotation of the rotor 21 and the substance 40 to be dried is broken, a large broken piece is captured by a back net 9 and small broken pieces not captured by the back net 9 are captured by a protection sheet 5.