Feeders flowability

Fillers must be fed aeeurately and eonsistently. Frequently, a eonstant feeding rate is required. The eharaeteristie properties of fillers are partiele size, frietion eoeffieients (internal and external), flowability, temperature, moisture eontent, and degree of eompression. Several typieal feeders are used. A rotary feeder has several eonstraints,... 

These angles of flow can be used to calculate the discharge opening size required on a hopper to prevent arching and rathoUng over the entrance to a feeder, predict hopper geometry required to promote gravity flow, estimate flowability and cohesiveness of different soUds. 

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