Lean/Dilute Phase Pneumatic Conveying Systems

Lean / Dilute phase pneumatic conveying systems is essentially a process that transfers material with low pressure and at high velocity. Lean Phase pneumatic conveying system is a suitable process for conveying of non-friable and non-abrasive materials suspended in air with low material to air ratio.

Also referred as suspension flow, most of the materials are conveyed irrespective of the particle size, shape or density.

Powders with low bulk density that are fine in nature with less air retention capability are conveyed in suspension flow in a dilute mode wherein material to air ratio is low.

Our customized solutions are suited to meet the various process needs as well as different industrial applications. With an experience of over 45 years, we are one of the leading Dilute/ Lean Phase conveying systems manufacturers. We have various lean/ dilute phase pneumatic conveying installations in India and overseas across applications and industries

Types of Lean Phase conveying system:
1. Positive Pressure type:

Positive pressure systems operate above atmospheric pressure and are used to convey bulk materials over medium distances with greater capacity than using vacuum systems

With diverter valves, multiple destination delivery one after the other reception points can be arranged easily with positive pressure systems.

Multiple feed points into a common line can also be provided ensuring proper selection and air quantity and special conveying Rotary air lock valves.

Convey Positive | Rieco
Convey Negative | Rieco
2. Vacuum/Suction/ Negative Pressure type:

Negative pressure conveying systems operate with air pressures below atmospheric pressure

A vacuum pressure is applied at the destination to suck the material from Rotary Airlock Valve (RAL)) or through suction tool and into the air stream.

With the advantage of gas leakage being inward, the dust injection into the atmosphere is virtually eliminated.

Negative Pressure system is critical for toxic and explosive materials and these materials can operate without a closed system, provided adequate safety measures like Exhaust Venting are taken care of.

Limitation in vacuum conveying is long distance transfer.

  • Suitable for transferring wide range of materials for short distances
  • Variety of particle size, shape or bulk densities can be conveyed
  • Distribution to multiple areas in a plant and pick-up from several points
  • Dust free operation, less spillage resulting in good yield recovery
  • Flexibility in routing – can be transported vertically and horizontally by the addition of a bend in the pipeline
  • Atomized powder handing ensuring better process controls, less manpower, safety in Plants
  • Total hygiene is maintained due to less exposure of manhandling
  • Lime
  • Hydrated Alumina
  • Calcium Carbonate
  • Pulverized coal dust
  • Brown friction Powder
  • Hexamine
  • Red and Blue Pigments
  • Soap noodles
  • PPT Silica
  • Horlics and Boost
  • Ammonium Nitrate
  • Grinded Fly ash
  • Pharmaceutical Powders
  • PVC Powder
  • Green Powder
  • Wheat
  • Sugar
  • Maida
  • Soya flakes
  • Polystyrene Beads
  • Dental grade Silica Powder/span>
  • NDC powder, Coffee beans
  • Mona Penta enthral powder
  • Gluten Powder
  • Soya Flour
  • Spent Wash Powder
  • Starch
  • Naptcol
  • Zinc powdered
  • Dyes & Pigments
  • Titanium Dioxide/TiO2
  • Dyes
  • Black oxide
  • Paracetamol powder
  • Chlorine powder
  • Carbon Chips
  • Dry Ginger Cummins
  • Kiln ESP Dust
  • Isoproturon Powder
  • Black oxide
  • Urea
  • Lime Powder
  • Phthalic anhydride
  • Polyester chips
  • PET chips
  • HDPE
  • polyethylene
  • Carbon Black
  • CPVC and UPVC
  • Dyes and Pigments
  • Black Paper
  • ABS Powder
  • Mancozeb
  • Mica
  • Dry Gelatine Granules
  • Marigold flowers
  • …many more


Agro - chemicals
Pharma - ceutical

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