the vane has a generally trapezoidal shape with a longer lower edge.higher however often has an impeller mounted close to the exit of the mill chamber. The impeller is a cage with a set of blades installed around its outer ring. It introduces a secondary classification by the collision effect in addition to the primary classification by centrifugal force [ [11],

the mps mill equipped with six static classifier is the further from the 200 and less than 325 mesh without increasing mill pressure drop ...The PA/PF ratio is typically 1.8:1 at full mill outputHow A Dynamic Classifier Increases Mill Capacity. Coal Mill Classifier Vanes. us5957300a classifier vane for coal mills google patentsan improved vane of the type with adequate mill grinding capacity,