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Rotary Tube Furnaces for Continuous Processes up to 1300 °C

Rotary tube furnace RSRC 120/1000/13 H2 for processes under hydrogen or in vacuum incl. safety system Rotary tube furnace RSRC 120/750/13

Screw-conveyor with adjustable speed

Screw-conveyors with different pitches for the adaption to the charge

Adapters for alternative operation with working tube or process reactor

Vibration generator at the charging funnel for improved powder supply

The RSRC rotary tube furnaces are particularly suitable for processes where continuously running batch material is heated for a short time.

The rotary tube furnace is positioned slightly inclined heated-up to the target temperature. The material is then continuously supplied at the upper end of the tube. It passes through the heated area of the tube and falls on the lower end out of the tube. The time of heat treatment results from the inclination angle, the rotational speed and the length of the working tube, as well as from the flow properties of the batch material.

Equipped with the optional closed loading system for 5 liter charge material incl. receptacle, the rotary tube furnace can also be used for processes under protective gas or vacuum.

Depending on process, charge and required maximum temperature, different working tubes made of quartz glass, ceramics or metal to be used. This rotary tube furnace is therefore highly adaptable for different processes.
  • Tmax 1100 °C
    • Working tube made of quartz glass open at both sides
    • Thermocouple type K
  • Tmax 1300 °C
    • Open tube made of ceramics C 530
    • Thermocouple type S
  • Heating elements on support tubes provide for free radiation
  • Housing made of sheets of textured stainless steel
  • Adjustable drive of approx. 2-45 rpm
  • Digital display unit for the tilting angle of the rotary tube furnace
  • Beltless drive and split-type furnace housing (opening temperature < 180 °C) provide for very easy tube removal
  • Compact system, rotary tube furnace positioned on a base frame with
    • manual spindle drive with crank to preset 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

Additional equipment

  • 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
  • Different gassing systems with good flushing of the charge with process gas in counterflow (only in combination with feeding system below)
  • Check valve at gas outlet avoids intrusion of false air
  • Vacuum design, up to 10-2 mbar depending on the applied pump
  • Charging system for continuous material transport, consisting of:
    • Stainless steel funnel incl. electric vibration generator 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 0.28 and 6 revolutions per minute, different gear transmissions for other speeds on request
    • Collecting bottle made of laboratory glass at the outlet of the working tube
    • Suitable for operation in gas atmosphere or vacuum
  • Working tubes made of differents materials
  • Quartz glass batch reactors, Tmax 1100 °C
  • Higher temperatures up to 1600  °C available on request
  • Digital display unit for the tilting angle of the furnace
  • Electric linear drive for the adjustment of the tilting angle
  • 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.
  • Process control and documentation via VCD software package or Nabertherm Control Center (NCC) for monitoring, documentation and control
Heating power
 

High-Temperature Tube Furnaces with SiC Rod Heating Gas Atmosphere or Vacuum

Tube furnace RHTC 80-230/15 with manual gas supply system

These compact tube furnaces with SiC rod heating and integrated switchgear and controller can be used universally for many processes. With an easy to replace working tube as well as additional standard equipment options, these furnaces are flexible and can be used for a wide range of applications. The high-quality fiber insulation ensures fast heating and cooling times. The SiC heating rods installed parallel to the working tube ensure excellent temperature uniformity. The price-performance ratio for this temperature range is unbeatable.

  • Tmax 1500 °C
  • Housing made of sheets of textured stainless steel
  • High-quality fiber insulation
  • Active cooling of housing for low surface temperatures
  • Type S thermocouple
  • Solid state relays provide for low-noise operation
  • Prepared for assembly of working tubes with water-cooled flanges
  • Ceramic tube, C 799 quality
  • Defined application within the constraints of the operating instructions
  • NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive

Additional equipment

  • Over-temperature limiter with adjustable cutout temperature for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load
  • Charge control with temperature measurement in the working tube and in the furnace chamber outside the tube
  • Fiber plugs
  • Check valve at gas outlet avoids intrusion of false air
  • Working tubes for operation with water-cooled flanges
  • Display of inner tube temperature with additional thermocouple
  • Alternative gas supply systems for protective gas or vacuum operation
  • Process control and documentation via VCD software package for monitoring, documentation and control
ModelTmaxOuter dimensions in mmOuter tube ØHeated Length constantTube lengthHeating power ElectricalWeight
 
°C3
W
D
H
in mmlength
in mmtemperature +/- 5 K in mm3in 
mmin 
kW4connection*in 
kg
RHTC 80-230/15150060043058080230806007.53-phase250
RHTC 80-450/1515008204305808045015083011.33-phase170
RHTC 80-710/151500107543058080710235108013.83-phase190
1Heating only between two phases 4Depending on furnace design connected load might be higher
2Heating only between phase 1 and neutral *Please see page 73 for more information about supply voltage
3Values outside the tube. Temperature inside the tube up to + 30 K