FIELD: technological processes.
SUBSTANCE: method of dry classification of powder material includes introduction of dry initial material and gas steam into working chamber of classifier, disintegration of initial material particles and transfer of particles in gas steam in working chamber with the help of horizontally rotating actuator in the form of magnet penetrable rod and electric discharge, forwarding gas steam with the help of gas pipe in classifier chambers, performance of initial material particles classification in gas stream, the speed of which is sharply changed in classifier chambers at the account of their diameter alteration. The first chamber of classifier is equipped with L-like gas pipe, which connects it with subsequent classifier chamber. After initial material is introduced in working chamber, additional self-wear of moving particles of initial material is performed in it, by means of particles surfaces interaction with additional actuators, which are made in the form of short magnet penetrable rods, in relation to horizontally rotating rod, which repels short rods to side walls of working chamber. Gas stream speed growth is created at its outlet from classifier chambers into gas pipes that connect chambers. In gas pipe that connects working chamber with the first classifier chamber, additional disintegration of particles that fell in it from the top part of working chamber is done, with the help of pulse electric discharge.
EFFECT: improves quality and efficiency of powder material classification.
5 cl, 1 dwg, 2 ex
