The pre-washing unit VWE 600/2 combines the function of a heavy material separator with a pre-wash of the feeding material. The Herbold pre-washing unit separates foreign bodies such as stones, metals, glass, sand and paper using three different integrated process steps. The feed material undergoes an intensive washing step and then, in a third step, makes further foreign materials sink.
In comparison to dry processing, the wear and maintenance costs of all three processing steps of a washing line is considerably less. The washing line itself is no longer strained by heavy contaminants, the components have a longer life time and also the final product quality will improve. The water treatment has to cope with less contamination thanks to the separate circuit that can be installed in the VWE unit.