Figure 1.

Schematic of the process setup including the process variables. A loss in weight feeder and a liquid pump are used for feeding raw materials into the twin-screw granulator. After granulation, the wet granules are transported to the dryer via pneumatic transport (stage 1). After the drying (stage 2) has been finished in the dryer, the dried material is transported to the downstream unit operations via another pneumatic transport (stage 3). See the nomenclature section for a variable description.