This paper focuses on the structural design, verification and operational functions of combined pneumatic and mechanical transport systems in processing granular materials. A pilot plant was designed in laboratory conditions, and the combined pneumatic and mechanical transport system was tested in operation. Subsequently, transport possibilities for granular waste materials, which varied in size and specific particle weight, were evaluated. A combined pneumatic and mechanical transport system was designed as a transport line for pneumatic conveying at low pressure in combination with a mechanical towing component. The combination of both modes was designed so that the towing component in the form of an axis-less helix was inserted into the conveying pipe. Transport efficiency was monitored by comparing common pneumatic transport and combined pneumatic transport (pneumatic and mechanical transport). Both systems were tested under the same operating conditions with various granular waste materials, which varied in size and specific particle weight. Crushed electric waste was used as granular material to assess the operational functions used. Properties of the proposed transport system were tested by constructing and operating the system. The evaluation of transport options featuring pneumatic and combined (pneumatic and mechanical) transport systems proved that the system was reliable and highly efficient for the transportation of dry granular waste.
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