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Felspar Material Flow Test

Felspar is a type of sandstone used to make roads and buildings. Though it is a durable and widely available construction material, it is dense and has particles of various sizes–similar in texture to brown sugar or wet sand.

Felspar has poor flow characteristics and has a tendency to become cohesive. It needs a material flow aid–and AirSweep can do the job.

In this flow test, about 0.668 cubic feet of Felspar (equivalent to a five-gallon bucket) was poured in a hopper and packed down to simulate blockage. Four AirSweep VA-06 units were installed near the vessel discharge.

  • Before AirSweep: Even when the discharge was opened, only a few clumps of material fell out.
  • After AirSweep: The VA-06 units operated at 60 PSI and pulsed every two seconds. It took just 13 pulses for all the Arkose to flow out of the hopper.

AirSweep can also be installed on larger vessels or placed higher up in the hopper to prevent bridging or compaction.