Undersized material is often enlarged in size by agglomeration (compaction) prior to crushing and screening to form an improved granular product. In this process, roller presses are utilized to form a compacted "sheet". The subsequent process of crushing, screening and recirculation of the newly resized material in compaction/granulation plants has become an industry standard.
Partial list of materials commonly granulated by compaction
Ammonium Sulfate
Potash
NPK Fertilizer
Calcium Cyanamide
Ceramic Materials
Roasted Pyrite
Sodium Sulfate
Salt
Sodium Carbonate
Units
Approximate Roller Press Capacity by Model
Pre-mixed particulate material is compacted between two counter rotating rollers into sheets/flakes.
