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1200C Two Zone 4" Rotary CVD Furnace with Automatic Feeding & Receiving System - OTF-1200X-4-R-II-AF

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Item Number: OTF1200XIIR4-AF
Transported by LTL Freight (Truck)
OTF-1200X-4-R-II-AF is a two zones rotary tube furnace with automatic feeding & receiving mechanism. The automatic feeder controls the amount and distribution of the materials inside the tube furnace to achieve continuous CVD powder processing under controlled temperature and atmosphere.  The receiving tank will accept fired powder without exposing the material to air.
This furnace set is designed for calcining inorganic compounds with better uniformity and preparing Li-Ion battery cathode materials with conductive coatings, such as LiFePO3, LiMnNiO3, etc and rotating CVD for Si/C anode materials.

Ref Article:Scalable synthesis of silicon-nanolayer-embedded graphite for high-energy lithium-ion batteries


 Furnace Construction
  • Double shell casing with three cooling fans
  • High purity Alumina fibrous insulation for max. energy saving
  • Gear DC motor drives quartz tube with variable speed 0 - 10 RPM
  • The furnace can be tilted up to 20°
  • The split cover enables faster cooling and easy operation

Automatic Feeding Furnace
  • The compact automatic powder feeder is mounted on the tiltable furnace via a vacuum-sealed swivel assembly. (Pic 1)
  • The proper connection ensures a uniform feeding rate and the tube rotation undisturbed under a controlled atmosphere. (Pic 2-3)
  • The feeding rate is adjustable by the potentiometer knob, 97cm^3/min max.
  • One stainless steel tank (1L Capacity, 70-80%) is installed on the other end of the processing tube to gather the fired powder without exposure to air (Pic.6), a 2 L capacity is also available upon request. 
  1    2     3    4    5   6
Heating Zone Length
  • Two zones: each zone length 8" (200 mm), total 16" (400 mm) heating zone
  • Constant temperature zone: 200 mm within +/- 1oC if two zones at the same temperature.

Processing Tube & Sealing Flange
  • Standard:  Fused quartz processing tube, please click the pics below for details:
  • Tumbling volume: 3200 ml (30% powder sample suggested)
                 Four Mixing Blades    Tube Dimension            
  • One pair of 60mm SS sealing flange with rotatable gas connector needle valves and are included for immediate use
 Max. Working Temperature 1100°C for continuously 1200 °C Max for < 2 hours
Temperature Controllers
Two PID digital temperature controller with 30 segment programmable,  +/- 1°C
 Two Omega K type 3mm OD x 6" L with high-temperature tolerance (220°C) connector
Tube Rotating Speed
 0 - 10 RPM variable
Furnace Tilt Angle
-5° - 20°
Chamber Pressure
 4.5x10-2 torr (<0.1mtorr/s leaking rate with all valves closed to maximize airtightness of the tube chamber)
  3.5 kW
  Furnace: 208 - 240V single phase (20 A Breaker required)
  Feeder: 208 - 240V single phase
 Warranty   One-year limited warranty (Consumable parts such as processing tubes, o-rings, and heating elements are not covered by the     warranty, please order the replacement at related products below.)  
PC software (Optional)
  • Brand new laptop with Microsoft Windows 10 and Microsoft Office 2013 (30 days free trial) for immediate use.
  • Labview Based Temperature Control System (EQ-MTS01) enables the user to edit temperature profile, manage heat-treatment recipes, and record and plot data for MTI furnaces.
  • A wireless remote control provides up to 300 meters of operating range.
Furnace Compliance、       
  • Patterned Product with  Patten Number:  ZL-2011-2-0162234.8 SINCE 2011-5-19
  • CE Certified
  • NRTL (UL61010)  or CSA certification is available at extra cost. 

Operation Instructions Video
 Dimension (L × D × H)
Furnace: 1300mm × 600mm × 1200mm 
Feeder: 220mm × 220mm × 202mm 
Feeder Hopper Opening: 180mm x 180mm 
System dimension : 214cm long x 70cm Wide x 153cm High (lid opened)
 Product Net Weight
Furnace: 200Kg
Feeder: 5Kg
 Shipping Dimension 65" x 40" x 70"
 Shipping Weight 600 lbs
  • In the case that the collected powder needs to be transferred in a sealed container, a customized setup can be purchased along with the furnace. This setup includes the flange with inline swivel, flexible bellows, right angel tube, the container with the butterfly valve and the support frame. The customer can easily remove the container with the butterfly valve for transportation while remaining the sealed condition. Please click the picture below to see the details, the setup is circled in red.
  • The tube furnaces with quartz tube are designed for use under vacuum and low pressure < 0.2 bars / 3 psi / 0.02 MPa
  • Attention: A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure to below 3 PSI for safe operation. Click here to learn the installation of a gas regulator.
  • Vacuum limit definition for all quartz tube furnaces: * Vacuum pressures may only be safely used up to 1000°C

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