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Herbold Meckeshneim GmbH has developed an affordable, simple solution to remove foreign material that enters recycling machine, such as metal parts and minerals.

Under the Herbold process, heavy materials are separated and evacuated from the flow in an ascending pipe via a discharge unit, in the pneumatic conveyor. That means there is no further transport of the bad material.

All materials are separated that have a considerable higher flying speed on the conveying pipe of the pneumatic conveyor.

Herbold, based in Meckesheim, Germany, has sold the first system to a PET bottle recycling plant, where the foreign materials are separated out from the flow of entire bottles, not yet size-reduced.