screen basket of the Vertical Screw Thickener VST

Vertical screw thickener: The latest innovation in dewatering

The pioneering Vertical Screw Thickener is a screw press with a vertical configuration and a very small footprint, making it suitable for retrofit installations in existing buildings. The pulp suspension is fed into the top of the machine, and its downward transport is gravity-assisted.

Benefits of the VST

  • Higher production – or higher output dryness at the same production – compared to a screw press of the same size
  • Highest dewatering efficiency (particularly for low feed consistencies)
  • 100% filling degree
  • Uniform dewatering from top to bottom
  • Small footprint
  • Telescoping filtrate housing for easy access to screw and screens

VST: pulp is feed from top

© Croce & Wir

VST: pulp discharge at the botton

© Croce & Wir

Dewatering physics of the vertical cocept

© ANDRITZ

Find out more ...

Contact us
ANDRITZ AG
Paper, Fiber and Recycling Division
Get in contact
Downloads
  • Vertical Screw Thickener VST

    The latest innovation in dewatering

    PDF : 549 KB
  • Fiber R&D Center Graz

    Fiber R&D Center Graz, for customer trials, research and development

    PDF : 982 KB