SYSTEM AND METHOD FOR COMPRESSED BED GRINDING IN A STIRRED MEDIA MILL

摘要

A system and method are disclosed for the grinding of industrial minerals to fine powders. The system includes a grinding chamber having a generally vertically oriented agitator that is rotated to stir the grinding media intermixed with a feedstock. As the agitator stirs the grinding media and feedstock, there is a retaining plate that is also located within the grinding chamber and positioned atop of the grinding media to prevent the expansion of the grinding media when it is being stirred. The retaining plate has one or more openings to allow the finely ground feedstock to pass upwardly therethrough but to prevent any grinding media from passing through the retaining plate. Introduction of the feedstock may be through one or more hollow support rods that locate the retaining plate in the desired location within the grinding chamber. The support rods are locked into position when the retaining plate is properly located.