Introduction of Dry granulator and dry granulation
Granulation is a process in which powder particles are made to adhere to each other, resulting in larger, multi-particle entities, so called granules. If such a process is performed without adding liquids, this is called dry granulation.
In dry granulation, the powder blend is compacted by applying a force onto the powder, which in general causes a considerable size enlargement. The compacts obtained are called ribbons, flakes or briquettes. In order to obtain the desired granules, the compaction process is followed by a milling step.
The granules that made by roller compactor
Pictures of Roll compactor granulation machine
A BOLE Roller compactor generally consists of three major units:
1. A feeding system, which conveys the powder to the compaction area between the rollers
2. A compaction unit, where the powder is compacted between two counter rotating rolls by applying a force, to form ribbons…