PREVIERO has over 70 years of experience in the rubber and plastics industry and its brand is a guarantee of reliability and quality for the most complex issues in the size reduction market. For the high output & high quality washing plants, foreseen for the upcycling of post-consumer film, PREVIERO has developed and offer its Wet Grinding Modules composed by: Wet Granulator + Transport Screw + Washing Centrifuge.
The Wet Granulator in the module grinds the film to a dimension that can grant the best output with limited production of PE fines, so the following operations of washing, drying and extruding take advantage to work with a constant and small material dimension, reaching a final sensible reduction in the consumption of energy and water. During the grinding process the machine generates a high friction on the material surface opening and removing a huge quantity of contamination thanks to the high mass quantity flow of water.
This solution has an effective capacity of clean the material that are quickly separated in water by the centrifuge. This solution offer a better quality in the polymer recycling than solutions based on a single dry-shredder in terms of better cleanness and less machine component wear.
In the photo, we are showing as example the wet grinding module based on three components:
Core of the module is the PREVIERO Grinder model MU 920 PRH, that receiving, inside of a SOREMA plant, the material after the pre-washing module, due the post-consumer material contaminations, can be subject to high wearing. In order to work in this severe condition, all the wearing parts are designed to be easily interchangeable without the need of dismantling the grinder and the need of a big crane. The wedge blocking of the blades assures a quicker maintenance and stronger blocking. The advanced design of the sealing allows to avoid water loss during grinding operation and to keep the ambient clean.
Main technical characteristics are: