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Pneumatic Transport and Conveying - Carrying Velocities

Recommended air velocity for pneumatic transport of products like cement, coal, flour and more.

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The table below indicates recommended air carrying velocities in pneumatic solid transport systems.

Pneumatic Transport and Conveying - Carrying Velocities
ProductApproximately DensitySuction Pressure to PickupAir Carrying Velocity
(lb/ft3)
(in H2O)
(m/s)(ft/min)
Ashes, powdered clinker 30 - 43 6500 - 8500
Ashes from coal 30 3 28 5500
Beans 28 4 31 6000
Buffing dust 2.5 19 3700
Cement 100 5 30 - 46 6500 - 9000
Coal, powered 20 - 28 4000 - 5500
Coffee beans 15 - 20 3000 - 4000
Cork 14 1.5 17 - 28 3000 - 5500
Corn, wheat, rye 45 3.5 25 - 36 5500 - 7000
Cotton, dry 5 2 22 - 30 3500 - 6500
Flour 17 - 30 3500 - 6500
Grain dust 10 - 15 2000 - 3000
Grinding and foundry dust 30 2 17 - 23 3500 - 4500
Jute 22 - 30 4500 - 6500
Lead dust 20 - 30 4500 - 6500
Leather dust 8 - 12 1800 - 2500
Lime, hydrated 30 3 25 - 36 5500 - 7500
Limestone dust 10 - 15 2000 - 3500
Malt 35 3 24 4800
Metal dust 15 - 18 3500 - 4000
Metal turnings 2.5 20 4500
Mineral wool 12 2 22 3500
Oats 22 - 30 4500 - 6500
Paper cuttings 20 3 25 5000
Plastic molding powder 15 - 17 3000 - 3500
Plastic dust 10 - 12 2000 - 2500
Pulp chips 22 - 36 4500 - 7000
Rags, dry 30 2.5 20 - 33 4000 - 6500
Rubber dust 10 - 15 2000 - 3000
Salt 28 5500
Sand 30 - 46 6000 - 9000
Sandblast 17 - 23 3500 - 4500
Sawdust and shavings, light 12 2.5 10 - 17 2000 - 3500
Sawdust and shavings, heavy 17 - 23 3500 - 4500
Shavings, light 9 2.5 22 3500
Shavings, heavy 24 3 20 4000
Sugar 30 6000
Textile dust 10 - 15 2000 - 3500
Vegetable Pulp, dry 23 4500
Wood chips 20 - 25 4500 - 5500
Wool 22 - 30 4500 - 6000
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