The Raymond Ultra Fine Mill is an air-swept vertical ring mill in which a shaft rotates convex rolls inside concave grinding rings to reduce materials to high degrees of fineness in a multi-stage process. Air flowing within the mill carries ground material through the classification process to achieve the desired fineness. The system offers customers flexibility to deliver products as fine as 50 percent passing 2 microns, or as coarse as 50 percent passing 10 microns. In addition to lower overall energy consumption, the Raymond Ultra Fine Mill features a compact design, low classifier speed, highly accurate fineness separation and versatile grinding elements that can be adapted to meet product size specifications. The full system includes an independent mill speed reducer and noise reduction technology in addition to the product collector and system control modules.