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THE NETHERLANDS
Hosokawa Micron BV
Gildenstraat 26
PO Box 98
7000 AB Doetinchem, NL
Phone: +31 (0)314 37 33 33
Fax: +31 (0)314 37 34 56
E-mail: info@hmbv.hosokawa.com
Chamber of Commerce no.: 34056583

You are here : Home Technologies Drying Batch Drying Ct Vacuum Dryer Working Principle

Working Principle

The Hosokawa CT-dryer is a conical vertical ribbon dryer especially designed for drying of granules, powders, filter cakes and granulating of powders.

More information?
Please contact us by filling out our contact form or go to our contact page.


Our CT Dryers are built as totally enclosed systems and when operated under full vacuum,
they offer the following advantages :
  • Fast drying time with quick and efficient removal of vapours

  • Total product in movement during drying, so high heat transfer

  • Compact design with reduced height

  • Low end moisture achievable even with bonded moisture

  • Recovery of pure solvents is possible

  • Transmission completely outside the vessel

  • No bearings or seals in the vessel

  • Special outlet valve to insure deep vacuum

  • Full compliance with international standards and guidelines like FDA, cGMP, GAMP, EHEDG

  • Customized seal and Mechanical seal design including sterile versions

  • Automated cleaning solutions with our patented CIP filter and CIP Skids


  • Single or Double helicoidal ribbons Dryers
    Central single or double helicoidal ribbons ensure a constant motion and move the whole batch, which results in high heat transfer and short drying times.

    All the experience of Vrieco-Nauta® and Cyclomix mixer/dryers has been putted to developed this dryer.
    The products being dried are subject to minimal mechanical en thermal stress.
    Therefore even fragile and heat sensitive products can be mixed with this mixer.

    The Hosokawa CT dryer is a conical vacuum dryer which is developed to:

  • reduce drying times

  • reduce building height

  • reduce maintenance costs


  • The CT dryer is available with different rotor and vessel to suit your requirements.












    Research in laboratory with some products, has shown that the heat transfer rate could be improved up to 50% compared to other dryers due to the design of the Hosokawa helicoidal ribbon rotor.

    The CT vacuum dryer is a contact dryer. Heat energy is basically transferred into the product through the jacketed vessel wall causing solvents or residual moisture to evaporate.

    The helicoidal ribbon transports the product, helps the vapours escaping to the surface and provides at the same time a continuous exchange of product in contact with the vessel wall.






    Drying Rate
    Our dryers (see diagram left) has its specific field of application and benefits. Our specialists can assist you selecting and evaluating the most suitable technologies to handle your products. In our laboratory in Doetinchem, both types of dryers are available for testing.

    More information?
    Please contact us by filling out our contact form or go to our contact page.



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