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  • Fluidized Bed Furnace w/ 2.4Mhz Ultrasonic Atomizer for Preparing Core-Shell Particles


    Continuous Temp:

    Chamber/Tube size:


    Specific Introduction:
        KJ-1200X-S is a UL/CSA ready Fluidized Bed Vertical Furnace with Ultrasonic atomizer for powder CVD ( FBCVD)applications. It consists a vertical positioned cylindrical heating chamber which surrounds the quartz tube with a built-in filter right in the lower middle section of the central heating zone. Its filter is a porous (15~40 microns) quartz frit that allows the controlled gas flow pass through and  float the particles on a cushion of the gas stream where the interaction between the solid and gaseous and liquid materials take place. This is an ideal tool for core-shell structure nano-powder formation.
    Fluidized Zone

    • Ultra-high frequency (2.4Mhz) ultrasonic atomizer can deliver sub-microns droplets to the heated flowbed for the subsequent decomposition and CVD coating on powder.
    • Provides uniform distribution of the gas and solution sub-micron particles blast over the entire cross section of the tube chamber
    • Solid particles are suspended by an upward gas flowing
    • Excellent heat transfer and coating to every single suspended particle 
    • Processed materials can be discharged from the top side of the tube after the cap is been taken off
    Note: The gas is passed upward through the fluidized bed at a high enough velocity to lift the particles. However, particles may be swept away from the tube chamber entirely if the velocity was set too high. Depends on the particle size, you may want to adjust the gas in pressure and flow rate until particles are lifted and move turbulently inside of the tube.
    • 110VAC, 2.4 MHz ultra-high frequency Ultrasonic Generator can generate sub-microns solution particles
    • Fluoropolymer coated liquid container and Fluoropolymer sealing gaskets
    • external Fluoropolymer optical sensor and valve for keeping the liquid level to the correct height and preventing damage to the nebulizing element, should the unit run dry.
    • Ultrasonic power programmable,0~100%, 5% increment.
    • 304 Stainless Steel T-piece (1.5'' sanitary fitting) with 1/4'' tube fitting adapters enables the use of carrier gas.
    Quartz Frit Frits with forced convection design can trap the particles within the central heating area
    • Frit: 15~40 microns porous, 22mm O.D x 4mm thick
    Furnace Casing
    • Double layer steel structure with air cooling
    • Split door design for easy installation of tube
    • High purity Al2O3 fibrous insulation designed for maximum energy saving
    Power 1200W
    Voltage AC 110V or 220V Single Phase, 50/60 Hz
    Max. Temperature 1100oC
    Continuous Temperature 1000oC
    Max. Heating Rate <= 20 oC /min
    Tube Size and Materials
    • One quartz tube is included. Main tube with bottom frit and enlarged space for particles processing
    • Two Ends: 25mm O.D, 22mm I.D; Central: 50mm O.D, 44mm I.D, for detailed size, please refer to the picture in below.
    • Central enlarged area ensures the high aerodynamic performance
    Sealing Flanges
    • Bottom flange: Regular designed 1'' bottom flange with 1/4'' tube fitting for introducing primary gas 
    • Top Flange: Special designed 1'' top flange with backstreaming secondary (precursor) gas inlet and exhaust

    • Das delivery may be needed for gas control
    • Oxygen Monitoring: An Oxygen Sensor can be used to monitor the oxygen level of gas(es) used in CVD systems for preventing or reducing oxidation.
    Heating Zone Length 200mm  (single zone)
    Constant Heating Zone 100mm (+/-2oC)
    Temperature Controller

    • 30 programmable segments for precise control of heating rate, cooling rate and dwell time.
    • Built in PID Auto-Tune function with overheating & broken thermocouple protection.
    • Over temperature protection and alarm allows for operation without attendant(s).
    • +/- 1 ºC temperature accuracy.      
    Heating Elements Fe-Cr-Al Alloy doped by Mo
    Fitting Ports 1/4'' Tube Fittings were installed on both sides of the flange for standard connection to the gas supplier
    Dimensions 340mm×300mm×1000mm ( W x L x H)
    Net Weight ~20 Kg (excluding mobile cart)
    Shipping Weight 200 lbs
    Warranty  One year limited warranty (Consumable parts such as heating elements, processing tubes and o-rings are not covered by the warranty, please order the replacement at related products page.)

    • 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.
    • Tube furnaces with quartz tube is designed for using under low positive pressure < 0.2 bars / 3 psi / 0.02 Mpa
    • The flow rate for gasses should be limited to < 200 SCCM (or 200 ml/min) for reducing thermal shocks to the tube
    • Attention: A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure to below 3 PSI for safe operation. 
    • Vacuum limit definition for all quartz tube furnaces: * Vacuum pressures may only be safely used up to 1000°C 

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