Patent ID: 8172169
Filing Date: 2012-05-08
Classification: B02C

Abstract:
1. A media-agitation type pulverizer comprising: a grinding container having an upright type cylindrical grinding chamber containing bead-shaped grinding media; a material slurry supply port formed in the grinding container; an agitating member disposed in the lower portion of said grinding chamber and having a shaft of rotation made substantially coaxial with said grinding chamber; and a media-separating member disposed in said grinding chamber and above said agitating member, which comprises: a guide ring arranged in said grinding chamber so as to divide a portion of said grinding chamber radially into an inner portion and an annular outer portion; and a rising passage which is formed by said annular outer portion of said grinding chamber between said guide ring and an inner wall of said grinding chamber and in which a mixture of the grinding media and the material slurry is agitated and mixed by said agitating member, wherein said guide ring has its lower end positioned at or higher than the upper end of the agitating member and its upper end positioned at a predetermined downward spacing from the lower end of the media-separating member.