The German company Manfred Woitzel (Woitzel) specialises in groundworks, demolition, recycling and disposal services. The company, founded by Manfred Woitzel in 1956 as a quarry operation, has evolved into the company it is today, collecting, transporting and storing and recycling several waste streams, like construction and demolition waste, soil and household waste.
Woitzel’s construction and demolition waste arrives at the holding yard via their container service, which comes from their demolition activities and deliveries of C&D waste to their holding yard. Today, the third family generation is looking at ways to improve the business’s efficiency and profitability. This is why Jannik Woitzel and his uncle Uwe Woitzel contacted German Keestrack dealer Oppermann & Fuss to look for the best solutions.
Woitzel had two crushers until the end of last year. One jaw crusher at their holding and C&D recycling site, and one impact crusher at demolition sites, travelling from one job site to the other, following their demolition projects. As Woitzel has two Keestrack K4 screens and a S5 stacker, they were already in contact with Oppermann & Fuss. Their salesman, Julian Pollmeyer, ensured that the known quality and service of the Keestrack screens would also apply to their crushers.
“Woitzel chose the Keestrack R3 impact crusher with double deck after screen and wind sifter,” said Uwe Woitzel. “With the Keestrack machine, we save fuel as it is much more economical than the previous jaw and impact crusher. The 2-deck after screen with return conveyor saves space, is easy to detach, and is easy to transport to demolition sites without a permit. This way, the impactor is used both on the holding and recycling site and on the actual demolition site. The fully equipped machine is two machines in one, saving a lot of cost in our operations,” Jannik Woitzel continues.
At the holding and recycling site, Woitzel is producing RC-1 certified 0/8mm and 8/45mm, which are used as crushing sand. The bigger fraction is used as a stable base, for instance, in road construction, with high drainage capacities. Every day, the R3 runs up to 6 hours, producing about 160t/h. When adding the S5 stacker into the production process, more savings can be made because the stacker saves a lot of wheeled loader fuel and personnel costs.
The innovative R3 impact crusher has unique safety features, like a safety key system. Its design has won several European design prizes, the most prestigious of which is the Red Dot award. It is very compact and easy to transport and is also available with a fully electric plug-in drive and a capacity of up to 250t/h.
The R3 is equipped with a vibrating feeder with a pre-screen of 1.200mm x 920mm to optimise crushing results and minimise wear. This asymmetric inlet opening facilitates longer material turning, entering the 770mm x 960mm (HxW) inlet. The high-inertia rotor with a diameter of 1.100mm and a width of 920mm produces high-quality end products with low wear.
The crusher is equipped in a closed circuit with a recirculation conveyor and a 2-deck precision screen of 3.100mm x 1.400mm and produces a defined aggregate product size. The installed wind sifter eliminates contaminations like plastics, wood or paper, and the overband magnet separates valuable metals. The R3 weighs ±33t, including all options.
The R3 is also equipped with a remote control, so it can be controlled by the excavator operator from his safe cabin. The R3 has an integrated water spray system that can be used if production gets too dusty. It is also equipped with a Keestrack-er UMTS/GPS. This telematics system provides real-time data and analytics, and the exact location of the machine. All aspects can be checked from a distance, and remote software updates can be made if necessary. It is possible to run diagnostic tests for all components, including the feeder, crusher, after-screen and conveyors. The Keestrack-er also functions well for maintenance planning by Oppermann & Fuss, helping to keep the machine in optimum shape and to increase uptime.
