Most solids processes consist of several apparatuses which are interconnected by the through flowing solids or fluid/solids stream. Often this is not only a sequential interconnection but in addition there exist some recycles. One very simple example for such a process is a sieve-crusher cycle, in which the product of the crusher is classified and the coarse material is recycled to the crusher. In particle technology education the different apparatuses are commonly treated individually, neglecting the complex interaction.

Another simplification which is usually made in education, is to deal always only with one particle attribute at a time: for example when designing a classifier it is assumed, that homogenous solids are classified, i.e. all particles have the same density, while in reality often mixtures with a distribution of the densities will be treated.

In the current presentation a specialized educational version of the flowsheet simulation SolidSim will be presented, that allows to demonstrate the complex interrelations of the different processing steps and of the multi-dimensional particle attributes. It easily simulates solids processes consisting of several different processing steps and including recycles. Also it allows for a complete characterisation of mixtures of particles with different particle size distributions and densities. Also the definition and correct treatment of attributes depending on other attributes, e.g. a moisture depending on the particles size is supported.

The potential of this version of SolidSim for teaching purposes is demonstrated by two examples, a sieve-classifier cycle and a process for the treatment of contaminated soils with a particle-size dependent contamination.