This sorting device is provided with: a conveyor (1) that transports groups of pieces (2); an identification device (3) that identifies first pieces (2A) and second pieces (2B) on the conveyor (1) by type of material; a blower device (6) that generates an airflow (9) along the transport surface from a middle part of the conveyor (1) toward the transport end (4); a first sorting part (5A) that blows the first pieces (2A) from the transport end (4) on the basis of the identification results of the identification device (3); a second sorting part (5B) that blows the second pieces (2B) to a different location; and a baffle plate (7) that protrudes from the conveyor (1) and is disposed below the groups of pieces (2) that are discharged.
