... rollerof grinding mill, roller of grinder 1.materials are Mn13, the best metal for ware parts 2. 65Mn roller, ... rollerof grinding mill, roller of grinder YGM series roller ... which was grinded go after the cycle wind of blower then be bring into classifier, the ... clean.So, the rollers and rings are wear parts of roller mill, the materials are Mn13 and 65Mn ...