Nabertherm – Rotary Tube Furnaces for Processes with Continuous Movement up to 1300 °C

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The rotary tube furnaces of the RSRC series are particularly suitable for processes in which continuously running batch material is heated short-time. These rotary furnaces can be used very flexibly for various purposes. The rotary tube furnace is slightly inclined and brought to the target temperature. The material is then fed continuously at the top of the pipe. It passes through the heated zone of the tube and falls out of the pipe at the lower end. The time of the heat treatment depends on the angle of inclination, the speed of rotation and the length of the working tube, as well as from the flow properties of the batch material. Equipped with the optionally available closed feeding system, the rotary tube furnace can also be used for processes in a defined atmosphere or in a vacuum. Depending on the process, batch and required maximum temperature, work tubes made of different materials are used.

Standard Equipment

  • Tmax 1100 °C
    • Working tube made of quartz glass open at both sides
    • Thermocouple type N
  • Tmax 1300 °C
    • Open ceramic tube C 530
    • Thermocouple type S
  • Solid state relays provide for lownoise operation
  • Heating elements on support tubes provide for free radiation
  • Dual shell housing made of textured stainless steel sheets with additional fan cooling for low surface temperature
  • Exclusive use of insulation materials without categorization according to EC Regulation No. 1272/2008 (CLP)
  • Adjustable drive of approx. 0.5-20 rpm
  • Digital display unit for the tilting angle of the rotary tube furnace
  • Split-type furnace housing (opening temperature < 180 °C) provide for easy tube change
  • Compact system, rotary tube furnace positioned on a base frame with
    • Manual spindle drive with crank to set the tilting angle
    • Switchgear and controls integrated
    • Castors
  • Defined application within the constraints of the operating instructions
  • NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive
  • Controller B400 (5 prgrams with each 4 segments)

Process Control and Documentation

As one of the world’s largest furnace manufacturers, Nabertherm has many years of experience in the design and manufacture of standardized and customer-specific control systems. All controls are characterized by a very high level of operating convenience and even the basic version has extensive basic functions. Depending on the requirements, the functions can be expanded and adapted to your needs. Professional software solutions for single or multiple furnace management as well as process and batch documentation based on our Nabertherm controllers complete the range.

Also for compliance with industry-specific standards that define process control and documentation, such as for example, the AMS 2750 F for aviation, the CQI-9 in the automotive industry or the FDA in the pharmaceutical industry we offer standardized solutions.

Additional Equipment

  • Charge control with temperature measurement in the working tube
  • Three-zone control for optimization of temperature uniformity
  • Alternative work tubes for different process requirements
  • Quartz glass batch reactors (Tmax 1100 °C)
  • Higher temperatures up to 1500 °C available on request
  • Vibrating channel on the rotary tube for convenient material supply, suitable for processes in air
  • Powder discharge tube for easy material discharge, suitable for processes in air
  • Feeding system for the continuous delivery of 5 liters of material under a defined atmosphere or vacuum, consisting of:
    • Stainless steel funnel incl. electric vibration unit to optimize the material feeding into the working tube
    • Electrically driven screw-conveyor at the inlet of the working tube with 10, 20 or 40 mm pitch and adjustable speed between 0.25 and 20 rpm
    • Collecting bottle made of laboratory glass at the outlet of the working tube
  • Gas supply package 26 for operation under non-flammable protective or reaction gases (only in connection with the feeding system)
  • Gas supply packages 3 or 4 for hydrogen applications (only in connection with feeding system)
  • Vacuum package for evacuating the working pipe, depending on the pump used up to 10−2 mbar
  • Process control and documentation via VCD software package for monitoring, documentation and control
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