roll compactors
Roll Compactors are used to force fine powders between two counter rotating rolls and presses the raw materials into a solid compact (flakes, sheets, strips).
A roller compactor generally consists of three major units.
- A feeding system, which converts the powder to the compaction area between the rolls.
- A compaction unit, where powder is compacted between two counter rotating rolls to a ribbon by applying a force.
- A size reduction unit, for milling the ribbons to the desired particle size.
The process of compaction is used to increase the bulk density of fine powder particles. Bulk Density is achieved by passing fine powder particles between closely held rollers to form solid compact sheet. The compaction process can be affected by roll surface and diameter, peripheral speed, separating force or pressure capabilities, feed screw and basic compaction characteristics of the material being used. Powder material properties can be improved by addition of a suitable binder, which facilitates better bonding between particles and keeps the production of fines to the minimum.
