Roll Compaction Agglomeration

There are a number of reasons that a roll compaction process is required: to increase the particle size of a powder, dedusting, to increase the density of a powder, to combine several different powdered materials so they do not separate on transport and for many other reasons.

The powder to be compacted is metered into the compactor ‘vertical screws’ where pre-densification and de-aeration occurs.
The vertical screws force the powder into the compactor rolls. The rolls are pressed together by hydraulic rams, the rolls then extrude the compact as a sheet, or series of ‘pencils’, or even briquettes.
A range of roll profiles are available, with different profiles required for different raw material compaction properties.
Similarly the compactors have a range of different pressure capabilities, this is required both to achieve compaction with the different materials and also in some instances to control dispersion property of the final product.
The compact sheet is then milled and then sieved through a multistage process incorporating a single, double or even triple deck sieve. The aperture of the sieve screens is used to control the final product particle size. The selection of the mill type, size and screen design is critical to achieving an efficient compaction process.

Custom Powders Ltd offer roll compaction in 5 separate process units in sizes ranging from 50kg/hr to 1,500kg/hr and for qualities ranging from Industrial, Food, Medicated Animal Health and GMP.