Pneumatics - Solid Transport Carrying Velocities

Air carrying velocities for solid transport of products as cement, coal, flour and more

The table below can be used as a rule of thumb for the design of air carrying speed in pneumatic solid transport systems:

Product Carrying Velocities
(m/s) (ft/min)
Ashes, powdered clinker 30 - 43 6500 - 8500
Cement 30 - 46 6500 - 9000
Coal, powered 20 - 28 4000 - 5500
Coffee beans 15 - 20 3000 - 4000
Cork 17 - 28 3500 - 5500
Corn, wheat, rye 25 - 36 5500 - 7000
Cotton 22 - 30 4500 - 6500
Flour 17 - 30 3500 - 6500
Grain dust 10 - 15 2000 - 3000
Grinding and foundry dust 17 - 23 3500 - 4500
Jute 22 - 30 4500 - 6500
Lead dust 20 - 30 4500 - 6500
Leather dust 8 - 12 1800 - 2500
Lime 25 - 36 5500 - 7500
Limestone dust 10 - 15 2000 - 3500
Metal dust 15 - 18 3500 - 4000
Oats 22 - 30 4500 - 6500
Plastic molding powder 15 - 17 3000 - 3500
Plastic dust 10 - 12 2000 - 2500
Pulp chips 22 - 36 4500 - 7000
Rags 22 - 33 4500 - 6500
Rubber dust 10 - 15 2000 - 3000
Sand 30 - 46 6000 - 9000
Sandblast 17 - 23 3500 - 4500
Sawdust and shavings, light 10 - 15 2000 - 3000
Sawdust and shavings, heavy 17 - 23 3500 - 4500
Textile dust 10 - 15 2000 - 3500
Wood chips 20 - 25 4500 - 5500
Wool 22 - 30 4500 - 6000

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