METHOD FOR CLASSIFYING MICROBALL, MICROBALL CLASSIFIER, AND METHOD FOR MANUFACTURING CYLINDRICAL SIEVE FOR MICROBALL CLASSIFICATION

摘要

PROBLEM TO BE SOLVED: To provide a method for classifying microballs of a diameter below 1.0 mm and a microball classifier. SOLUTION: In the method for classifying the microballs of the diameter below 1.00 mm, a sieve for classifying the microballs is the cylindrical sieve obtained by rounding plate materials with apertures formed by punching to a cylindrical shape and the microballs are fed into the cylindrical sieve and the microballs fed therein are classified while the cylindrical sieve is kept rotated. Also, the microbal classifier for the diameter below 1.00 mm includes a feeder for supplying at least the microballs, at least one or more cylindrical sieves constituted by rounding the plate materials with the apertures formed by punching to the cylindrical shape and a recovering container for receiving the microballs classified by the cylindrical sieves, in which the classified microballs are supplied from the feeder into the rotating cylindrical sieves and are sieved by the cylindrical sieves. COPYRIGHT: (C)2004,JPO