Rotary Tube Furnaces for Continuous Processes and/or Batch Operation up to 1300ºC

RSR 80-500/11 - RSR 120-1000/13, RSR-B 80-500/11 - RSR-B 120-1000/11
If, for example, the focus lies on maintaining the individual grain characteristics of the material such as in drying or calcination, rotary tube furnaces of the RSR product line are the optimal solution. The permanently rotating working tube allows for the continuous movement of the charge.

These models can basically be designed for continuous processes and/or batch operation. Depending on process, charge and required maximum temperature, different working tubes made of silica glass, ceramics or metals are used.

Depending on the application, these models can be upgraded with additional accessories such as charging funnel, electric screw-conveyor for materials supply, or gas supply systems into a small production plant. Rotary tube furnaces can be operated at ambient air, under protective gas and even in vacuum. The necessary features can also be supplied as additional equipment.

• Housing made of textured stainless steel sheets
• Beltless drive and hinged furnace housing provide for very easy removal of working tube or reactor
• Adjustable drive of approx. 1-20 rpm

• Different tube diameters or heated lengths
• Manual or automatic gas supply systems
• Gas-tight rotary device for the connection to gas supply systems
• Check valve at gas outlet avoids intrusion of false air
• Three-zone control for the optimization of temperature uniformity
• Temperature display unit in the working tube with measurement by means of an additional thermocouple
• Charge control by means of an additional thermocouple in the working tube

• Tmax 1100 °C
• Thermocouple type K
• Furnace designed as tabletop model with quartz glass reactor open at both sides
• Reactor is removed from the furnace for discharging

• Different gas supply systems
• Vacuum design, up to 10-² mbar depending on the applied pump
• Reactor made of quartz glass, open at both sides, with burling for better conveyance of the charge in the tube
• Package for improved charging and discharging of the working tube in the following design:
  • Reactor made of quartz glass or stainless steel 1.4841, closed at one side, with integrated blade for a better mixing of the charge
  • Tilting mechanism to the left/to the right. For charging and heat treatment, the furnace is tilted towards the right side until the stop so that the load is charged into the furnace. For discharge, the furnace is tilted towards the other side to discharge the powder from the reactor.
  • Removal of reactor not necessary
  • Furnace mounted on the base
  • Base running on casters
• Base with manual spindle for tilting angle adjustment for charging, during heat treatment and for discharging the
  tube
• Digital display for the tilting angle of the furnace

• Tmax 1100 °C
  • Thermocouple type K
  • Working tube made of quartz glass open at both sides
• Tmax 1300 °C
  • Thermocouple type S
  • Working tube made of C530 ceramics, open at both sides, not gas-tight
• Compact design with switchgear and controller, mounted in the base, including transport casters
• Furnace mounted on base, including manual spindle drive with crank for pre-adjustment of the tilting angle
• Base running on casters

• Working tube made of quartz glass with burling for optimized transportation of the charge up to Tmax 1100 °C
• Gas-tight working tube made of C610 ceramics up to Tmax 1300 °C
• Different gas supply systems which cause process gas to flow around the charge due to inlet on the one and outlet on the other side of the tube (only in combination with an electrically driven screw-conveyor, see below)
• Charging funnel made of stainless steel with lockable powder outlet, as additional equipment also available as gas-tight funnel
• Electric vibration generator at the charging funnel for the optimization of material supply into the working tube
• Electrically driven screw-conveyor at the inlet of the working tube with 20mm pitch and adjustable speed between 0.28 and 6 revolutions per minute
  • Screw-conveyor with adjusted pitch for adjustment to the charge as requested
  • Different gear transmissions for other speeds on request
• Discharge blade at the outlet of the working tube
• Collecting bottle made of laboratory glass at the outlet of the working tube
• Digital display unit for the tilting angle of the furnace
• Electric linear drive for the adjustment of the tilting angle
• Alternating design for continuous processes or batch operation. The furnace can be tilted on the frame towards both sides. The customer can mount a working tube open at both sides for flow processes as well as a process reactor (Tmax 1100 °C) closed at one side for batch operation.
• PLC controls for temperature control and the control of connected aggregates such as gearshift and speed of the screw-conveyor, speed of the working tube, switching of the vibration generator, etc.