This paper is the second part of (1)and it shows an attempt to define a suitable model, which would make it possible to predict the drying rate for pastelike and bulk materials in a conventional Nautamixer applied as a direct dryer. As it was shown in (1), (2), (3) all influential variables were studied, and from the results it can be seen that the system is highly complex. By means of system simplification an empirical model is defined, suitable for drying rate calculation for this type of dryer, in the accuracy range of ±25%. For the practical purpose, it seems that this simple model offers a reliable starting point for drying process design for similar systems.