“…7 l measured the circular component of the speed of the grinding media, in a region where grinding operation was highly effective in a vertical type agitation bead mill. They revealed from the experiments using a vessel of 2.2 dm3 and three different discs-horizontal plate, vertical pin and horizontal pin-that grinding efficiency depends on We devised a single disc type agitation bead mill that enables simple motion of grinding media and allows independent regulation of radial and axial velocities.…”