Use a fluid bed dryer when your feed is damp powder or granules, as with sugar, salt and starch.
Use a spray dryer when your feed is a liquid that has to become a powder, as with milk and coffee. Feed form and the final particle you need decide the dryer; heat sensitivity and throughput refine the choice.
- Fluid bed dryer: damp powder and granules
- Spray dryer: liquid feed to powder
- Heat sensitivity and throughput refine the choice
- Other dryers exist for special materials: vacuum, tray, rake
Fluid bed or spray: the difference
What to ask first
Feed form
A wet solid points to a fluid bed dryer; a liquid points to a spray dryer.
Final form
Granules or fine powder? The dryer type largely sets the particle you get.
Heat sensitivity
Know how much heat and time the material tolerates before you shortlist.
Throughput
Dryers are sized to the output of the line, so know the kilograms per hour you need.
Other dryers we supply
QCan a fluid bed dryer dry granules?
Yes. Fluid bed dryers dry damp powder and granules, and a fluid bed can also be combined with granulation. See the granulation guide.
QIs a spray dryer only for milk?
No, our videos also show coffee powder. It suits liquid feeds that must end up as powder.
