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Spiral classifiers

Spiral classifiers

Metso's spiral classifiers are designed to provide the most effective pool area and overflow velocity requirements. By combining the proper submergence of the spiral with one of the tank designs a choice of 63 combinations is possible in Straight, Modified or Full flare tank designs. The proper combination of pool depth, area and spiral construction is important to secure a controlled turbulence in the slurry flow for accurate size separation.

Contact: Erik Karlsson

Spiral Classifiers are suitable for:

  • Separation of fine particles and liquid from coarse particles
  • Separation of light particles from heavy particles
  • Separation of the particles into a number of products graded according to size
  • Separation of liquid from solid particles

Main benefits of Spiral classifiers:
  • Energy saving
  • Heavy duty, rugged construction
  • Powerful self-contained spiral lifting device
  • Continuous spiral raking
  • Optimal particle size range 800 to 75 microns

Main features of Spiral Classifiers:
  • Adjustable weirs
  • Sealed, submerged bearing
  • Optional automatic lubrication system
  • Rigid tank and substructure
  • Wide choice of tank design
  • Overflow collection box
  • Wide range of industries serviced
  • Single spiral range from 300 mm to 2 200 mm
  • Duplex spiral models 1 500 mm and 2 200 mm

Spiral Classifier Simplex

Spiral Classifier Duplex

We are the OEM (original equipment manufacturer) for equipment manufactured under the following brand names, and is the only supplier of parts with the original drawings and design details for:

Metso, Denver and Svedala Spiral Classifiers


Brochure Spiral Classifiers EN (766 kB) PDF

Technical Specifications Spiral Classifiers EN (324 kB) PDF