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Pneumatic Conveying of Reclaimed Foundry Sand and Dust

Ashveyor Pneumatic Conveying SystemA cast plaque factory used the Ashveyor pneumatic conveying system to reduce new foundry sand purchase and disposal requirements.  The factory is one of seven in North America that produces cast aluminum and bronze, etched, ADA, ceramic inserts, bas-relief, giclee, and photo relief plaques.

The factory already had a number of pneumatic conveying systems in use, but required another dense phase system to transport a mixture of reclaimed sand and dust.  Because of the small volume of material, the Ashveyor’s 0.75 cubic foot  capacity was more than enough to convey the material the length of a football field without exposing employees to the hazardous fumes.

Conveyed Material

  • Material: foundry sand and dust
  • Bulk Density:  70 lb/ft3 aerated bulk density
  • Size:  particle size < 1 mm max
  • Temperature:  300 °F
  • Moisture Content: 0%
  • Condition: free flowing, dry


  • Recover reclaimed sand and dust
  • Pneumatic conveying of mixture 350 ft, including 2 vertical lifts
  • 200 lb/hr
  • Reduce new foundry sand purchases
  • Reduce used foundry sand disposal
  • Increase plant operational value


  • Transfer Capacity:  2,100 lb/hr
  • Pneumatic Conveying Distance:  350 ft
  • Reception Points:  1
  • Air Consumption:  10 scfm
  • Small design, fits into existing space
  • Automated, on-demand operation

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