Dust avoidance. Dedusting. Dust metering.

The purity of bulk materials is a critical factor in the quality of the end product. Regardless of whether the focus is on minimizing product degeneration, cleaning products perfectly or determining the residual dust to comply with standards – Coperion´ s solutions offer the optimal mix of many years of process competence and globally leading bulk materials expertise. Even at the design stage of the conveying plant, the Coperion specialists ensure that dust generation will be minimized. For that reason, they select suitable pipe materials and flange connections and ensure conveying velocities to be in an acceptable range.

The use of hydraulic conveying systems is providing best results to meet the highest quality requirements. Our range of equipment includes sieves and separators for efficient cleaning of the product from dust and streamers:

Diverting Counter-flow Elutriator (UGS)

This separator has proven its efficiency over the years and has been continuously optimized. The latest generation now provides two cleaning stages. With this the separating efficiency is further improved. The highly-efficient diverting counter-flow elutriator is suitable for most pellets, has been optimized in terms of output and gas consumption and can be fed directly either pneumatically or gravimetrically from a hopper. Throughput capacities of 120 t / h and more can be achieved.

Gravity Rotation Separator (SRS)

The gravimetrically fed rotation separator, offers capacities of up to 100 t / h and is well suitable for separation of dust and streamers of very soft and brittle granular products. Depending on the type, this dedusting takes place in 1 or 3 cleaning stages. The gravity rotation separator can be installed on the base, on the silo top or – depending on the available space – even between the silo and the tank car. It can also be supplied as a compact, transportable unit.

Drum Sieve (TSM)

The drum sieve is also fed gravimetrically. It is used both to separate streamers and streamer conglomerates. Used as a standalone or as part of a cleaning system, the drum sieve (TSM) is a compact, service friendly unit with fully automatic cleaning of the sieves.

Puricon ® - laboratory analyzing device to determine dust content

Puricon is used to determine the dust content in plastic pellets in accordance with the FEM 2482 standard. The device is easy to operate, and in its compact desktop configuration it saves valuable working time because it requires minimal time to set up.

Gamma-Bend - Pipe bend raises product quality

Pipe bends divert the flow of the bulk material in pneumatic conveying units. While passing through the bend, the pellets slide along the outside wall, leading to friction and local melting. The resultant bulk material contamination in the form of abrasion has a severe detrimental influence on product quality. The Coperion GAMMA BEND® eliminates this problem – its special geometry ensure optimized product flow, thereby minimizing the strain on the product.


Olaf Hustert
Product Management
Bulk Materials
Phone +49 (0)751 408-481

pdf Technical_Information_Cleaning.pdf