We deliver: Top-grade service even during corona pandemic


The team of Doppstadt Systemtechnik GmbH (DSG) commissioned and handed over a complete waste wood processing system – including the Ceron Type 306 pre-shredder – at the site of our customer Ehrich GmbH in Schleswig-Holstein.

As a certified waste disposal company, Ehrich GmbH places high demands on the equipment they use on a daily basis. Focusing on: disposal and recycling of waste and secondary raw materials. The staff of Doppstadt Systemtechnik GmbH (DSG) did not only set up the rugged Ceron Type 306 pre-shredder from our slow speed shredder line, but also the entire waste wood processing system. The project’s aim was to reduce at least 30 metric tons per hour of waste wood to a defined particle size while removing non-ferrous and ferrous metals within the permitted levels of dust and noise emissions. At the end of March, DSG’s project developer Robert Mücklich, project manager Jörg Siekmeyer and area sales manager Volker Prinz were in Rendsburg and commissioned the entire system. According to the customer, “it was important for us that all system components are optimally matched to one another in terms of process design.”

The “opener” of the system is our Ceron Type 306, which is especially well suited for the application on hand, not just in terms of the customer’s input material but also its high throughput. The waste wood with a bulk density of approx. 250 kg/m³ is fed to the pre-shredder with our M-tooth shredding system by means of an excavator with grab attachment. A water spray system was installed by the customer to prevent dust formation during the shredding of waste wood. The material passing through the shredding comb is screened in the next process step to a grain size of approx. 0 to 100 mm via a Splitter Unit 425. The oversized particles (100+) are fed back to the pre-shredder via two conveyor belts. An over-belt magnet separates ferrous metals from the oversize return belt in order to protect the shredder and extend its service life. The fine material (0 to 100 mm) is collected on the belt below the shredder and transferred to a feeding belt. An over-belt magnet separates ferrous metals out of this fraction as well bevor the rest is fed to the NF separation. Prior to that, there is a disc spreader to optimally distribute the material over the whole width of the belt. The NF metal is discharged into a box, while the end product is piled up. At this point the customer requested a mobile screening deck to divide the product further into two size fractions. Thanks to the interaction of all individual components, the concept for recycling waste wood in accordance with Ehrich GmbH’s specifications was a success.

Our customer was especially impressed by our adherence to delivery dates throughout the entire project and by the high efficiency of the overall system. “Our expectations were surpassed: We are now able to handle the daily amount of wood in one single shift. At the same time, we have noticed that our employees appreciate the good quality and thus enjoy working with this system” the company Ehrich added.

Project manager Jörg Siekmeyer is proud to have handed over the system – in cooperation with Ehrich GmbH and all other suppliers involved – especially with the usual outstanding quality.

You can also visit us on YouTube:

How waste wood treatment works with ALLRECO: https://www.youtube.com/watch?v=bSZRKy1mplo

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