Classifier-equipped media-agitation type pulverizer

Abstract

Provided is a classifier-equipped media-agitation type pulverizer, which is capable of moving up pulverized particles to a classification section by supplying a secondary gas in an amount less than ever before, thereby enhancing classification capability of a classifying wheel. Solution A classifier-equipped media-agitation type pulverizer of the present invention comprises: a pulverization section disposed in a lower portion of a tubular container; a classification section disposed in an upper portion of the tubular container; a vessel housed inside the pulverization section, and having an agitator member disposed thereinside to pulverize a raw material; at least one secondary gas inlet port provided in the pulverization section; a classifying wheel for wheel-rotation type product classification disposed in the classification section; a fine powder discharge passage connected to the classification section so as to discharge a classified fine powder therethrough; an upward passage for leading particles subjected to the pulverization, from the pulverization section to the classification section; and a downward passage for returning a coarse powder which has not been collected by the classification section, from the classification section to the pulverization section. The agitator member has a cylindrical rotor body rotatably disposed in the vessel to extend vertically, while defining an annular pulverization chamber between an outer periphery of the cylindrical rotor body and an inner periphery of the vessel, and a circulation mechanism is provided between the pulverization section and the classification section to promote a flow of carrier gas carrying the pulverized powder, in a direction from the pulverization section to the classification section.

Dependencies are inferred from the claim text.