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Space rest­ric­tions are often a problem when desig­ning compact, effi­cient faci­li­ties. Bulk mate­rial flows have to be lifted verti­cally within the smal­lest space possible.


The PURATEK-vertical® screw conveyor is an elegant and cost-optimized option for this purpose. However, this requires a precise design of the required conveying system: hori­zontal feeding unit and the vertical conveying unit.

The speeds of these units must be opti­mally harmo­nized, and enormous thrust forces onto the drive shafts must be absorbed adequa­tely in order to achieve a high conveying capa­city of the system. PURATEK® desi­gners are experts for vertical conveying systems with 20 years of expe­ri­ence. In the past, vertical spiral screw conveyors for all imageable bulk mate­rials have been supplied and successfully put into opera­tion by PURATEK®: From A to Z, from aluminum oxide (“Alumi­ni­um­oxid” in German) to sugar beets (“Zucker­rüben” in German). Nevert­heless, today most vertical spiral conveyors are used for conveying dewa­tered as well as dried sewage sludge.