When the retention of the granular characteristics of the material is important, as in drying or calcining, the rotary tube furnaces of the RSR product line provide for the optimal solution. The permanent rotation of the working tube in one direction makes sure that the charge is constantly in motion. The furnaces may be operated either horizontally with a quartz glass reactor or in a preset tilting angle with a quartz glass tube for continuous conveying of the charge through the tube. Equipment like the filling funnel, electrically driven feeder and outlet with conveying paddles in the tube can be added to upscale these continuous furnaces into a small production plant.

• Design like RS models
• Tmax 1100 °C
• Type K thermocouple
• Compact unit, designed as tabletop model
• Optionally supplied with quartz glass process reactor or quartz glass tube
• Easy working tube or process reactor removal through beltless drive and hinged housing
• Infinitely variable drive (approx. 1-20 rpm)
• Good flooding of load with process gas due to inlet on one side and outlet on other side of tube

Additional equipment

• Gastight rotary feedthrough for connection to gas supply systems (suitable for operation in rough vacuum)
• Display of inner tube temperature with additional thermocouple
• Different gas supply systems
• Gas cooler at tube outlet
• Check valve at gas outlet avoids intrusion of false air
• Three-zone control
• Tube adaptor for alternative operation either with glass reactor or ceramic tube
• Tilting frame with adjustable tilting angle for conveying the powder through the tube
• Feeder with electrically driven screw conveyor and adjustable rotational speed
• Filling funnel with closable powder outlet
• Powder outlet with conveying paddles in the working tube at the tube end