Chip Washing Systems

Clean raw materials improve the quality of the final product, and prolong the life of the wear parts in downstream systems. The only way to effectively clean chips is using a wet process which removes foreign particles and impurities on the surface of the chips.

Foreign particles such as stones, nails, etc. are removed first in the ANDRITZ chip washer. Fines and particles sticking on the surface of the chips are removed by the second washing stage and discharged with the wash water at the dewatering screw. In the case of extremely dirty materials (e.g. un-debarked chips, chips from open piles, etc.), an additional washing stage might be necessary to obtain the highest chip cleanliness before the dewatering screw.