WET FINE GRINDING APPARATUS FOR SOLID SUBSTANCE, METHOD FOR FINELY GRINDING SOLID SUBSTANCE AND RECORDING MEDIUM COATED WITH AQUEOUS DISPERSION OF FINE PARTICLES OF SOLID SUBSTANCE

摘要

PURPOSE:To prevent the inclusion of coarse particles due to short pass by connecting the introducing port of matter to be ground provided to one end of a vessel and the discharge port provided to the other end thereof by a conduit, and forcibly moving the media and matter to be ground in the vessel to the discharge port by the rotation of rotary stirring blades. CONSTITUTION:The introducing port 5 of matter to be ground provided to one end of a vessel and the discharge port 6 of said matter provided to the other end thereof are connected by a conduit 7, and a device providing an inclined surface is applied to rotary stirring blades 3 to generate a circulating stream so that media and a dispersion together flow through the conduit 7 from the vessel to again flow to the vessel. The dispersion sent to a rear stage is passed through the slits 9 of the separation mechanism screen provided on the way of the conduit to be separated from the media and a circulating stream is formed while a large amount of the dispersion and the media are together moved in the longitudinal direction of the vessel, and the dispersion is finely ground while no excessive load is applied to the separation mechanism screen. By this method, the dispersion of a solid substance is efficiently obtained.