Patent ID: 8136750

Claim:
A powder processing apparatus comprising: a main body portion including: a cylindrical rotor that rotates at a high speed; and a cylindrical stator arranged coaxially to a rotational axis of the rotor, outside the rotor with a gap therebetween, wherein the powder processing apparatus further comprises: a supply port that is provided at one end of the main body portion, and that supplies a processing raw material into the gap together with an airflow; and a discharge port that is provided at the other end of the main body portion, and that discharges, from the gap, a processed product obtained by spheroidizing the processing raw material between the rotor and the stator; and wherein, in the inner peripheral surface of the stator, there are provided circumferentially elongated grooves whose circumferential length direction orthogonally intersects the axis line of the stator, wherein, on the outer peripheral surface of the rotor, there are provided vertical convex portions parallel to the axis line of the rotor.