WB 620

WB 620


The input material is fed into the feeding hopper of the raccoon via wheel loader. The hopper doses it into the washing drum, where water is applied. The front part of the drum is closed to extend the interaction time between material and water. Due to the drum rotation friction between the individual particles of the input transfers the surface contamination into the water. In the rear the washing drum is perforated like a screen to drain the material of wash water. After drainage the washed product is discharged via the rear conveyor belt. In a washing process the input material is pre-screened at a grain size above the mesh width of the washing drum. This way just adhering surface contamination goes into the drum and through the screen into the water. If pre-screening below the mesh-size of the washing drum is carried out the Raccoon represents a wet classification process with the fine fraction in the water. In both cases, the water must be treated and solids removed to close the water loop using additional equipment. The oversize product is then clean of surface contaminations such as sludge, biofilm, sand etc.

WB 620 Umbausatz SM 620 – Gravel and Sand

WB 620 Umbausatz SM 620 – Plastic

Technical Data

product data sheed (pdf)


The raccoon is a mobile trommel washer with the purpose to remove adhesions like mud, biofilm, soil etc. from the input material. Applications are for example biomass, stones, gravel or plastic. It causes intensive interaction between input material and water. Due to friction between particles in the drum, adhesions are removed so that the recycling material can be further processed.


  • Clean, high-quality end products
  • High throughput
  • Easy transport on trailer chassis
  • Great variability thanks to many configuration options for the basic machine
  • Reversible intraday backfitting ensures maximum flexibility