The pneumatic dryer or flash dryer eliminates the product moisture in a few seconds: the humid feed is introduced in the drying column by a screw, a sling, a cascading screen, via an eventual venturi. The prepared product is succed into the drying duct by an exhaust fan and collected in a bag filter.
The dried product is partly the final product and is partly backmixed with the feed, to obtain the right prepared feed into the dryer.
The back mixing process is done in paddle mixer or realized pneumatically via an adjustable classifier.
The main application are found in
- the mineral industry, potassium, lead or magnesium derivates,
- the food industry: starch, casein,
- the organic products: filter, cakes, ...
In collaboration with Drytec Ltd