The process is usually continuous. The treatment temperature cannot be too high, essentially for safety reasons, but also to avoid unwanted color variations. On the other hand it is necessary that the temperature is not even too low to have an acceptable yield.
The technique that provides the best results is that of the “fluid bed” that we have historically used in different variants where the discriminating factor is the particle size of the base product. For this application both continuous plants such as the Turboflash and the TSA can be used, as well as discontinuous systems, such as the TS. This recently finds good possibilities of application because it allows to treat products with variable flow rates and particle sizes, guaranteeing at the same time lower consumption. The plant, although operating in a discontinuous manner, is completely automated and easily combines with continuous lines thanks to the rapidity of the drying cycle. It also allows the product to be cooled before being discharged and retains a minimum quantity of residues inside it, with obvious advantages in quality and cleanliness. Finally is possible to push the drying obtaining any final humidity value and this simply by changing the parameters of the panel cycle. Our equipment is suitable for productions ranging from 50 to 3’500 kg/hr.
www.sieswissservice.ch
