Centrifugal Ultrafine Mill (also called centrifugal grinder) is the latest powder equipment which have developed based on the advanced milling equipment at home and abroad.The milling machine has access to national patent, No.ZL200420010530.6. Its prominent merit is that, the machine is stable and has low noise, and it can produce the ultra-fine powder between d95 325-3500 mesh. The Centrifugal Ultrafine Mill is a high-power intensity media mill that can be used for ultra-fine grinding, employing centrifugal forces generated by gyration of the axis of the mill tube in a circle. The mill charge motion is quite different depending on the ratio of the gyration diameter to the mill diameter (G / D ratio), varying from a motion similar to that of a conventional tumbling media mill to that of a vibration mill. In this study, a centrifugal mill was constructed with an arrangement where the gyration diameter could be readily adjusted.