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1700ºC Vertical Tube Furnace for Powder Spherification - GSL-1700X-II-VT-AF

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GSL-1700X-II-VT-AF is a 1700ºC Max. verticle tube furnace for Powder spherification.  The system consists of automatic powder feeder on the top, dual heating zone verticle tube furnace on the middle and sphere powder collector on the bottom.  The powder passes through the heating zone by gravity and changes into a sphere shape by sintering,  which is processed under a vacuum or controlled atmosphere. The powder spherification system is suitable for battery electrode powder, 3D printing of metallic powder and some magnetic powder treatment.
Powder Freeder
  • Stainless steel hopper with the vibrator.
  • Feed rate adjustable by the potential knob, 97cm^3/min max.
  • Long feed screw for efficient powder delivery. 
  • KF25 material delivery port
  • Torque value: 4.45 N.m
  • Single Phase 208~240VAC, 200W Max. 
  • For operation under 110VAC, please order a 500W  transformer
Verticle Tube Furnace
  • Dual heating zone with 200mm L for each, and 400 mm long in total and independent temperature control
  • Max. working temperature: 1700ºC for each zone with +/- 1ºC accuracy.
  • Two B type thermal couple installed
  • Two digital temperature controller for two zones independent temperature control
  • PID and auto-tune built in the controller with 30 segment programmable
  • D89 PC communication port built in, but PC control software is optional.
  • Power:  208 - 240V AC, 50/60 Hz, and 7KW 
Processing tube
  • High purity alumina tube ( > 99.5%)
  • 60mm OD x 54mm ID x 1200 mm L
  • The tube is consumable without warranty. Pls click the picture left to order spare tube 

Sealing Flanges

  • The system is vacuum sealed with flanges and enables atmosphere controlled
  • Top flange connected with powder feeder and needle valve for gas inlet.
  • Bottom flange is connected to an electric gate valve which is connected with powder collector container
  • KF25 vacuum port is built in for connecting an optional vacuum pump.
  • Please click the picture below to choose a vacuum pump:
  • Vacuum pump and high vacuum station


  • 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. Please click the picture below to learn more: 

Gas Purification and Circulation

  • EQ-RMP-1 is an automatic recirculating moisture and oxygen purification system, which can provide an environment with moisture and oxygen concentration lower than 1 ppm for MTI's furnaces and gloveboxes. 
  • Two-columns of Molecular sieves are Built-in in the system. One is for removing oxygen and another is for removing moisture up to < 1 PPM
  • The automatic pressure control system is built in to keep the pressure at a constant level
  • 6" color PLC touch panel is included which can set and display the humidity and pressure level
  • Oxygen sensor and moisture sensors are included. 

Hermetic Quenching Tank

  • Hermetic quenching tank is optional for air-sensitive materials, which enables the entire quenching process under atmosphere control
  • Please contact MTI for further inquires. 


400mm×400mm×1500mm ( W x L x H)
The dimension may change without notice

Net Weight

~100 Kg (excluding mobile cart)


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 below.)

Laptop, software & WiFi Control (Optional)

  • Brand new laptop with Microsoft Window 10 and Microsoft Office 2013 (30 days free trial) included
  • Labview Based Temperature Control System (EQ-MTS01) enables the user to edit temperature profile, manage heat-treatment recipe, record and plot data for MTI furnaces.
  • A wireless remote control provides up to 300 meters operating range.
  • Above features are available upon request at an extra cost (up to $1,000). Please contact us for more information.
  • Note: The software is only compatible with MTI’s Yudian Temperature Controller


  • CE Certified
  • NRTL or CSA certification is available at extra cost. ( please click marks below to learn details )


Click here to learn the installation of a gas regulator

  • 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. 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 

Operation Instructions


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