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4" Two Zone Rotary CVD Tube Furnace @1200C Max. - OTF-1200X-4-R-II-UL

In stock
Item Number: OTF-1200X-4-R-II-UL
Transported by LTL Freight (Truck)
OTF-1200X-4-R-II is a  two zones rotary tube furnace, designed for calcining inorganic compound with better uniformity, especially good for preparing Li-Ion battery cathode materials with conductive coatings, such as LiFePO3, LiMnNiO3, etc and rotating CVD for Si/C anode materials。

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 30o by electricity.
  • Split cover enables faster cooling and easy operation

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
  • Fused quartz processing tube, please click the pics below for details:
           Four Mixing Blades                    Dimension                    
  • One pair of 60mm SS sealing flange with needle valves and rotatable gas connector  is included for immediate use
    • Optional:
  • High Purity Graphite Tube (2.36'' O.D x 2'' I.D x 48'' L), please click the pics below for details:
  • High-Temperature stainless steel alloy tube with Max. working temperature at 900°C is available upon request
  • Ni-Based super-alloy100 mm dia.  the tube is available at extra cost for Max. 1100oC @0.4 Mpa 
Gas Fittings
Inlet Fitting: Elbow Push-in connector for 6mm O.D tube; Outlet Fitting:  Elbow Push-in connector for 12mm O.D tube
Max. Working Temperature 1100°C for continuously 1200 °C Max for < 2 hours
Heating Rate Recommend: 10 °C/min
Maximum: 15 °C/min
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
 Left: 0~30° ; Right: 0~15°
Chamber pressure
 4.5x10-2 torr (<0.1mtorr/s leaking rate if close all the valves to airtight the tube chamber)
Production yield
  2 kg per batch
  4 KW Max
  208 - 240V single phase (30 A Breaker required)
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.)  

  • CE Certified
  • All electric components ( >24V) are UL / MET / CSA certified
  • The furnace is ready to pass TUV(UL61010)  or CSA certification at extra cost. ( please click marks below to learn details )

Operation Instructions

 Furnace dimension:
 Product net weight
 Shipping dimension 49" x 40" x 70"
 Shipping weight 450 lbs

Application Notes
  • The concept of continuous power feeding and processing can be realized by the use of Magnetic Fluid Sealed Swivel Coupling in line with Volumetric Feeder and Rotary Furnace. Please view the assembling approach diagram and video in below.  
  • For CVD coating, you may choose our multi-channel Gas delivery system as Pic below right.
  • For CVD coating, you may choose our multi-channel Gas delivery system and automatic feeding system  as Pic below 
  • Ref Article: Scalable synthesis of silicon-nanolayer-embedded graphite for high-energy lithium-ion batteries
  • The tube furnaces with quartz tube are designed for using 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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