| 摘要 |
PROBLEM TO BE SOLVED: To provide a fine powder classification apparatus capable of efficiently classifying a powdery material in which a fine grain component and a coarse grain component coexist, having a function of cracking an agglomerate of particles and enabling the recovery ratio of the fine grain component to be enhanced.SOLUTION: A fine powder classification apparatus 100 includes: a cylindrical part 10 held in such a way that the axis 10a thereof forms a vertical state; an inflow route 11 communicated with the cylindrical part 10 and for generating a swirling flow around the axis 10a in the cylindrical part 10 by introducing an airflow in the cylindrical part 10; a conical part 20 provided continuously with a lower edge part 10b of the cylindrical part 10 in a downward tapering-off state; and a recovery route 30 provided continuously with a lower part of the conical part 20. A polygonal cylindrical part is provided around the axis 10a on an inner peripheral surface of an upper conical cylinder body 20b and a lower conical cylinder body 20c constituting the conical part 20, and a cracking member is provided in a position separated in the axis 10a direction from the inner peripheral surface of the polygonal cylindrical part. |
