Patent ID: 7438245

Claim:
A milling and classifying apparatus, comprising: a collision mill, and an air classifier, wherein the collision mill comprises a jet nozzle configured to eject jet stream into a milling room, a path configured to feed a powder to be milled into the jet stream, and a collision plate disposed opposite to the jet nozzle, a collision member is farther mounted to a support of the collision plate at downstream of the collision plate, and the powder collides with the collision member following the collision with the collision plate, the air classifier comprises a dispersion room into which a mixture of primary air and the powder is introduced, and a classification room which is equipped with a center core at the upper side, a separator core at the lower side, and a secondary air inlet at the side wall, the classification room is disposed below the dispersion room, and the mixture of the primary air and the powder flows from the dispersion room into the classification room, and a flow stabilizer is arranged at a central suction of the separator core to control swirl stream generated within the classification room so as to centrifuge the powder into coarse particles and fine particles by action of the swirl stream, wherein the flow stabilizer is equipped with plural blades on a ring pedestal for controlling the air stream and a core-adjusting ring inside the pedestal for controlling the suction pressure at the central suction of the separator core.