DT / DTB

The drill pipe crystallisers (DT and DTB) ensure the homogeneous mixture of the crystals in the crystallizer with an internal axial pump.

DTB crystallisation

The energy provided by the pump is lesser than that deployed by a forced circulation, which significantly reduces attrition and breaking of crystals.

Crystal size may be greater than 2 mm and the residence time greater than 10 hours.

A surrounding decantation zone is often added to remove the fines and thereby increase the average size of the crystals.

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References

Crystallization of boric acid

Crystallization of boric acid

Flash cooling DTB crystallizer.

Pentaborate crystallization

Pentaborate crystallization

  • IFC® and DTB crystallizers
  • Mechanical steam compression (2 compressors in line)
  • Two parallel identical lines: 2 x 35 t/h of salt produced
Crystallization of sodium sulphate

Crystallization of sodium sulphate

  • Crystallization in two stages
  • crystallizer IFC® and DT
  • Mechanical steam compression (2 compressors in line)
  • Spinning and drying of crystals