vertical roller, trapezium, Raymond Orientation vertical Product application for limestone, concrete, for ore, for coal grinding Other characteristics high-performance, high-capacity, automatic, large, air classifier, high-pressure, compact Rotational speed 980 rpm (6,158 rad.min-1) Output Max.: 10 t/h (6 lb/s) Min.: 4 t/h (2 lb/s) Final grain size