Extrusion International 4-2020

44 Extrusion International 4/2020 RECYCLING – CASE STUDY Residual materials from shredders from automobile recycling is made up of a wide variety of different materials. In addition to plastic, rubber, and textile fibers, ASR con- tains valuable non-ferrous metals such as aluminum, brass, and cop- per, as well as mineral components and glass. The latter makes effi- cient processing difficult, which Less Wear for Economically Efficient Processing of ASR rated at the Jansen site by means of a cross-flow separator. The remain- ing fraction was pre-crushed in the existing granulator. A non-ferrous fraction could then be extracted from the material using eddy cur- rent separation. The non-inductive fraction, however, always con- tained valuable non-ferrous metals in addition to plastics and miner- als. These non-ferrous metals were copper cables and other metal composites. Up until this point, Jansen used fine-grinding mills di- rectly after eddy current separa- tion to recover this fraction of the remaining metals. However, this is exactly where the weakness in the otherwise sophisticated procedure stemmed from: the wear costs of the fine-grinding mills used were Jansen Shredder Recycling learned the hard way. Where it all started: a sophisticated process with a weakness A sophisticated process should have ensured that Jansen obtains the highest possible yield of recy- clable materials – especially metals. First, the heavy particles were sepa- A BHS-Sonthofen rotor impact mill (type RPMX) has been in operation at Jansen Shredder Recycling BV in Moerdijk, the Netherlands, for the fine processing of automotive shredder residues (ASR) for almost a year. Thanks to years of experience in the processing of metal-bearing waste materials, the experts from Sonthofen found the optimal machine for processing abrasive materials. Wear costs at Jansen have significantly decreased since The rotor impact mill (type RPMX) fromBHS can handle heavily abrasive materials