The Runarsson screw conveyors are designed for transporting various types of loose materials with a maximum moisture content of 35%. The design of this type of conveyors allows direct connection to the RFF and RFU screw out-feeders used in silos or stokers. The compact design of the conveyor allows easy setting, adjustment and control of the mass flow rate. The conveyor is made of corrosion, wear and high temperatures resistant material.