Pneumatic Transport of Granules

Pneumatic conveying of granules is widely used in various industries because of its efficiency, cleanliness and ability to automate processes. Here are the main industries and uses of this system:

Application of Pneumatic Transport of Granules
  • Transport of raw materials (e.g. PE, PP, ABS, PET) – transfer of granules from silos or big-bags to processing machines (injection molding machines, extruders).
  • Precision batching – for example, in the production of composites or consumables.
  • Recycling – moving ground plastic waste (regranulate) for reprocessing.
  • Shipment of granulated products – for example, sugar, salt, dried ingredients (powdered milk, instant coffee).
  • Top-up of additives – such as colorants, fillers or modifiers in granular form.
  • Feed production – transportation of granulated animal feed.
  • Transport of granulated active substances – for example, in the production of tablets or capsules.
  • Mixing of ingredients – pneumatic transfer of granules to mixers.
  • Dosing of fluxes – e.g., granular foundry process aids.
  • Transport of granular chemicals – for example, fertilizers, detergent granules, synthetic resins.

Ways to use Pneumatic Granular Transport:

  1. Suction and compression (vacuum and pressure) systems
    • Used for transportation over shorter distances, such as from big-bags to machines.
    • Often used in plastic recycling.
  2. cPiston systems (dense phase)
    • Used for delicate granules where protection from damage is important.
    • Low transmission speeds, lower power consumption.
  3. Distribution systems (multi-point)
    • Automatic routing of pellets to various receivers (e.g., multiple injection molding machines in the plant).
    • Used in large manufacturing plants.
  4. Gravity-pneumatic systems
    • A combination of free fall and air blast, such as when loading into silos.

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