Pneumatic Conveying
Transport through pipework with no moving parts in the line
Overview
Pneumatic conveying moves bulk solids through a pipe using air. The route can bend, rise, run overhead and split to several destinations — and nothing along it moves except the material.
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There are two ways to do it, and the choice is set by the material rather than by the layout.
Dilute phase suspends particles in a fast air stream. It is simpler, cheaper and handles most powders and granules — but the velocity that keeps material airborne is the same velocity that wears pipe bends and breaks fragile products.
Dense phase pushes material as slugs at a fraction of that velocity, using a pressure vessel instead of a rotary valve. Abrasive minerals stop grinding away bends, plastic pellets stop generating angel hair, and blends arrive still mixed. The trade is a more complex system with cyclic flow and pressure vessel certification.
Not every material forms stable slugs, so dense phase suitability is assessed from material properties and, where needed, a conveying trial.
Benefits & Features
- Dilute phase to 30 t/h · dense phase to 60 t/h
- Distances to several hundred metres
- Fully enclosed — no dust escape, no contamination ingress
- Flexible routing with bends, rises and multiple destinations
- Pressure, vacuum and combined systems
- Wear-resistant bends and hardened pipework for abrasive materials
- ATEX execution with earth bonding and explosion relief
Products in this Family
Dilute Phase Conveying
Flexible routing with no moving parts in the line
Dense Phase Conveying
Low velocity conveying for abrasive and fragile products
Areas & Application
Polymers & Plastics
Granule transfer from silos to extruders and truck unloading into storage, with dense phase eliminating angel hair on pellet lines.
Cement & Minerals
Fine powder transfer, with dense phase controlling bend wear where dilute phase would need replacement in months.
Food Processing
Flour, sugar, coffee and cereals in fully enclosed lines, with dense phase keeping whole products intact and blends mixed.
Chemicals
Vacuum systems where leak-inward operation contains hazardous dust even if a joint fails, in ATEX execution.
Animal Feed
Ingredient transfer from intake to batching, with multiple destinations served through diverter valves.
Send us your material properties, capacity and route — we will assess dilute versus dense phase and size the system.