Cement production process presents about Vertical Roller Mill (VRM), VRM - Working principle, VRM - Some Common Mill Configurations, VRM - Built-in Separator, VRM - Separator Fotos, Potential Problems/clogging, VRM - External Circulation. | CEMENT PRODUCTION PROCESS ROLLER MILL Vertical Roller Mill (VRM) - 3 Sections Transport Exhaust gases Raw meal 1. Separation Drying Separation Feed Material Grinding 2. Grinding Hot gases Drive Energy 3. Drive Vertical Roller Mill (VRM) - Details feed gate (air lock) mill exhaust product discharge mill outlet duct separator cage rotor separator guide vanes tailings cone separator discharge flap mill casing roller with tyre or segments water injection rocker arm roller axle table liner dam ring hot gas inlet nozzle of louvre ring grinding table hydraulic cylinder material scraper clutch and motor speed reducer with table bearing VRM - Working principle Vertical roller mill Grinding force = Roller weight + (pressure) Force Material bed Roller rolls freely with table Feed material Table moves with drive Max Particle size in feed: 5-8 % of roller diameter Feed size: f (Roller Ø .