Media-circulation type pulverizer

A media-circulation type pulverizer comprising:

• a pulverization container including an end plate closing up an upper end thereof and having an upright cylindrical pulverization chamber containing pulverizing media in the form of beads;
• a raw-material-slurry supply section provided in the pulverization container;
• an agitating member disposed in a lower region of the pulverization chamber and having a rotary shaft substantially coaxial with a central axis of the pulverization chamber;
• an annular partition wall disposed to extend upwardly from a position surrounding an outer periphery of the agitating member or a position radially away from the outer periphery by a given distance, so as to radially divide an internal space of the pulverization chamber to form an inner region of a pulverization chamber and an annular outer region of a pulverization chamber;
• a media guide member provided on a central area of a lower surface of the end plate to extend downwardly and configured to turn a mixture of a raw material slurry and pulverizing media being moved upwardly through the outer region of the pulverization chamber by an action of the agitating member, to a downward flow so as to direct the mixture toward the inner pulverization chamber region;
• a media separation member provided underneath the media guide member;
• and
• a product slurry discharge section provided inside the media guide member and communicating with an inside of the media separation member so as to enable a product slurry after separation of the pulverizing-dispersing media by the media separation member to be discharged to outside therethrough,
• wherein the media-circulation type pulverizer is operable to circulate the pulverizing media between the inner region of the pulverization chamber and the outer region of pulverization chamber to pulverize a raw material in the raw material slurry by this circulating pulverizing media.