Harper Rotary Tube FurnaceEvery Harper rotary tube furnace is designed for the customer’s unique specifications. We bring innovative solutions to designs for continuous processing of advanced materials such as granular, powder, or particulate aggregates in high purity and specialty atmosphere environments at temperatures up to 3000°C, including gas and electric heated systems.

Want to learn more? See how our state-of-the-art rotary furnace designs offer the most advanced features for your production line – experience an interactive tour, or watch the video here.

 

 

Rotary Tube Kiln

Harper Rotary Tube Furnace Design Enhancements

  • Riffle flights – provide axial mixing for processing at a fixed average composition and are excellent for moderating exothermic reactions or continuous in-line mixing. Riffle flights enable similar benefits as standard continuous stirred tank reactors (CSTR), but in a continuous rotary tube format.
  • Helical flights – convey material without back-mixing. Utilized for processes that require narrow residence time distributions.
  • Cross Flow System – coarse, free-flowing material can be heated and reacted with through-flowing gas. Gas flows locally through the solid material path while globally flowing co-current, counter-current – or combinations thereof – to material flow, providing superior gas-solid contact.
  • Advanced Sealing System – patented rotary reactor sealing system provides optimal rotary tube furnace atmosphere integrity with minimal gas consumption

 

Harper Rotary Tube Furnace Capabilities

  • Harper Rotary KilnTemperatures to 3000°C
  • Tube diameters from 3 to 60 inches (1.5 meters)
  • Electric, gas, or dual-fuel fired systems
  • Controlled atmospheres including flammables and toxic gases  – hydrogen, nitrogen, air, oxygen, ethylene, methane, CO2, CO, chlorine gas
  • Variety of tube material designs – alloys, mullite, alumina, silicon carbide, quartz, graphite
  • Process gas circulating and conditioning systems
  • Automatic material handling and return systems
  • Defined residence times
  • Advanced seal design
  • Automatic lubrication
  • Feed level detection

Typical Rotary Tube Furnace Applications

  • Pyrolysis
  • Drying
  • Calcination
  • Reduction
  • Controlled oxidation
  • Carburization
  • Solid-solid reaction
  • Purification
  • Waste remediation

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