Roller mill Feed Mill Machinery Glossary |
Roller mill: Roller mills used for the grinding of bulk density of material ground on a roller mill will be about 5 to 15 percent less than material ground by Typical differentials range from :1 to :1 (fast to slow). Typical roll speeds would be 1,300 feet per minute (~ 395 m/min) for a 9inch (~23 cm