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Compaction & Granulation Services
The primary goal of compaction is to increase the density of bulk materials. In particular, small, fine particles are joined by compression to larger particles. The process may also serve to extract high air fractions should be removed from the bulk materials, so eventually achieve lower volumes.
Compaction using roller compactors is a highly efficient method for compacting bulk materials. In roller compaction, the starting material is compacted via two counter-rotating rollers.
Depending on the plastic deformability of the starting material, endless slugs, but also fine needle agglomerates, are produced by pressing, for example, during the compaction of silicates. The slugs are comminuted into granules of the desired shape in subsequent comminution. This results in bulk materials with higher densities (lower volume) and better flow properties.
Granulation is mainly used in pharmaceutical or similar applications.
During granulation, fine, poorly flowing powders are transformed into larger particles called granulates through the agglomeration of particles. The main aim of granulation in the pharmaceutical industry is to achieve good meterability of bulk material, since the active ingredients (APIs) in their non-granulated state are difficult to compress into tablets in the subsequent process step (tableting).
In principle, two different methods are suitable for the production of granules.