... parts 2. 65Mn roller, rollerof grinding mill, roller of grinder YGM series roller mill, also high pressure grinding mill ... which was grinded go after the cycle wind of blower then be bring into classifier, the qualified ... blower to repeat the above procedure, the rest of the wind enter into bag filter to clean. ... So, the rollers and rings are wear parts of roller mill, the materials are Mn13 and 65Mn, ...