A centrifugal apparatus includes: a bowl including a plurality of projection portions provided in a standing manner at an edge portion of an opening portion, the plurality of projection portions each including a curved surface portion bulging toward a rotation axis; a screw conveyer; a hub forming separate matter discharge ports between the respective circumferentially adjacent projection portions; and wear-resistant sleeves. The wear-resistant sleeves each includes a sleeve body that is formed in an arched shape along the corresponding curved surface portion and covers the curved surface portion; and a claw portion including one end connected to one end portion, in a longitudinal direction perpendicular to the axis direction, of the sleeve body. The claw portion is in contact with an outer surface of the corresponding projection portion and fixed to the outer surface via a detachable tool for fixing, and an insertion opening for inserting the projection portion.