The grinding and drying of highly moist mineral solids represents a combined process in which comminution, drying in a hot gas stream, particle classification and product separation in the gas stream must be systematically coordinated to ensure defined product properties and stable system operation.
The focus is on the interaction between mass transfer, heat transfer and comminution in the grinding chamber, as well as in the drying section and the classification stage, as process efficiency is significantly influenced by hot gas flow, flow conditions and the residence time of the particles in the system.
Of particular process engineering relevance is the recirculation of selected solid streams, as this allows the feed material to be conditioned in terms of its moisture content, ...