Extrusion International 4-2020

45 Extrusion International 4/2020 chilled cast chrome wear parts, it is extremely resistant, and, therefore, ideal for processing ASR fractions, as is done at Jansen Shredder Recy- cling. As it turned out, results were con- vincing. The mill reliably destroyed glass and minerals. “In many cases, the material only needs to be run through our RPMX once to achieve the desired shaping and be able to separate the material on air sepa- ration tables,” explains Nikolas unexpectedly high. These machines were designed for use with abra- sive components. Glass and mineral components resulted in wear costs of EUR 35 per ton of input mate- rial. The profits from the recovered metals could not make up for these losses. This meant a new solution was required. Implementing expertise from rock crushing in the ASR recycling process Jansen Shredder Recycling turned to BHS-Sonthofen. The Dutch com- pany was already familiar with the rotor impact mill (type RPMX) from BHS. In order to ensure that the mill from BHS was capable of pulverizing abrasive materials and dissolving and pelletizing non-ferrous materi- als, Jansen traveled to Sonthofen with the original input material and performed the corresponding tests with the recycling experts onsite. Originally, the rotor impact mill comes from the stone and earth sector: The models RPM und RPMF were used for the targeted shred- ding of abrasive materials, such as river gravel. The RPMX was especial- ly optimized for the recycling indus- try. Due to its solid construction and Kaufeisen, Area Sales Manager in the Recycling & Environment divi- sion at BHS-Sonthofen. “If pelletiz- ing requirements are not met after the first run through, the material can be run through the rotor im- pact mill a second time.” At Jansen Shredder Recycling, the decision was made not to recycle the material and to carry out the last pelletizing step in the existing fine-grinding mill. “Adding the rotor impact mill from BHS to the process as an interme- diate step resulted in a significant increase in profits,” reports Hans Brekelmanns, Managing Director at Jansen Shredder Recycling. “We were able to lower wear costs by ap- proximately 75 percent overall.” The rotor impact mill was integrated in ASR processing at Jansen Shred- der Recycling BV in March 2019. This has increased the efficiency of the entire process. They were also very happy with the consultation pro- vided by the experts from BHS and more joint projects have already been planned. BHS-Sonthofen GmbH An der Eisenschmelze 47 87527 Sonthofen, Germany www.bhs-sonthofen.de/en.html Optimal pelletizing is being carried out on valuable copper components in the rotor impact mill The input material contains valuable metals but also glass andminerals