The heart of the system is a new Multistar star screen, painted bright yellow. It is fed by upstream shredder via an intermediate hopper, which allows the addition of other material. The Multistar separates into four fractions: Fines for composting, two fuel fractions with different grain, and woody oversizes which go back for reshredding. Electronic conveyor scales give precise data on output, which Andreas Zeller can access remotely at any time. His motto is ‘it has to pay’, and he regularly examines volume flows and material streams to adjust his system and
processes for the optimum economy. He likes the way the screening system gives him to the flexibility to do that. ‘I can respond to different material properties or new customer requirements instantly just by changing the screen cuts. You can’t do that with drum screens.’