Mechanical Conveying of Bulk Solids | powderbulksolids.com
As the cohesive strength of the bulk solid increases beyond the Ff = 0.3 limit, it becomes necessary to transport the bulk solid on vehicular type conveyors, such as a troughed belt conveyors, bucket elevators, or high-lift belt conveyors. The normal upper bound for elevating bulk solids by bucket elevators or high-lift conveyors is Ff = 0.45.