ATEX dense phase centralised system 

Our customer specialises in the design and manufacture of artefacts based on graphite powder. This particularly strong and self-lubricating material is pressed into special moulds to produce various objects.
In this case, we chose one of the three modes provided by dense phase pneumatic transport, which makes the material flowing on the lower part of the tube collected in groups, i.e. small dunes moving towards the destination. This technology is the optimal solution for very fine powders, with particles of a few tens of micrometers in diameter, but in this case with a rather high specific weight.
This is why we decided to use a dry pump, which achieves very high vacuum levels, essential for effective handling.
Due to specific characteristics of the powder to be handled, it was necessary to produce an ATEX certified system for zone 22.

We therefore created a system capable of moving graphite powders from six containers to their respective presses, using a single vacuum pump.

Summary of technical features:

  • 6 product hoppers: capacity 100 kg/h
  • 1 vane vacuum pump of 40 mc/h
  • electrical panel for system management
  • EPA absolute filters to prevent the dispersion of dust residues into the environment
  • tubes and connectors