... evenly download, transmission, screening, crushing and storage.3 the coal feeder is composed by rack, backplane ( the coal chute), transmission ... platform, hopper gates, rollers, etc.4 the feeder can be devided into two kinds ,one is with hopper ... 5Speed r/min720720720970970Max feed sizemmBelow 10% content250350400500700Above 10% content200300350450550 flexible feeder conveyor