Pneumatic Transport and Conveying - Carrying Velocities
The table below indicates recommended air carrying velocities in pneumatic solid transport systems.
| Product | Approximately Density | Suction Pressure to Pickup | Air 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 | ||
- 1 lb/ft3 = 16.018 kg/m3
- 1 in H2O = 248.8 N/m2(Pa) = 0.0361 lb/in2 (psi) = 25.4 kg/m2
- Systems for pneumatic transport - Pneumatic transport systems suitable for powder or solids
- Pneumatic transport fundamentals - An introduction to pneumatic transport of powders
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