The extraction and processing of sand and gravel require efficient cleaning and classification methods. Larger particles are screened, while fine-grained materials such as sand have to be washed and dewatered.
In the county of Bentheim in Lower Saxony, the Sietzen gravel operations in Uelsen use STICHWEH scoop wheel systems for optimisation. The choice of technology depends on the geological composition, the desired final quality and the economic conditions. Thorough planning is necessary.
Kiesbetriebe Sietzen uses an E 6509 H suction dredger scoop wheel from STICHWEH for desludging and dewatering the raw material with a capacity of around 850 m³/h and a solids output of 200-250 t/h at 0/80 mm grain size. A further DSD 3011/09 BL 120 double scoop wheel for dewatering and classifying the sand has a throughput capacity of 200-250 tonnes per hour.
