Pendulum Roller Mills, Vertical Ring-Roll Mills - ARVOS GroupRaymond Roller Mills are air-swept vertical ring-roll mills. Pendulum roller mill that simultaneously dries, pulverizes and classifies materials.cadmium raymond roller mill 3064,Vertical Mills, Air-Swept Swing Hammer - ARVOS GroupRaymond Vertical Mills are high-speed air-swept swing hammer mills. Grinding equipment for pulverizing materials in the extreme fineness range.