Dry processing of manufactured asphalt and concrete sands


Dry classifying uses no water, providing a very environmentally friendly and economical classifying solution. Metso air classifiers provide a full system solution with an alternative to wet classifying.


Metso has an extensive range of air classifiers and solutions :

Static solutions
  • Gravitational classifiers
  • Gravitational inertial classifiers
  • Centrifugal classifiers
  • Cyclonic classifiers
  • Transportable classifiers
Ancillary air solutions
  • Cyclones
  • Fabric filters
  • Gyrotors

Process description

Static solutions are designed to achieve extremely accurate separations even though they contain no moving elements within the air stream. This is achieved through the classifiers intelligent airflow design and use of recirculating, secondary airflow.
Ancillary air solutions provide the systems required for the correct operation of the classifier equipment, as well as, offering other dry solution capabilities.

Achieves extremely accurate separation

Brochure Air Classifiers - English Download
Technical datasheet Air Classification - English Download
Technical datasheet Air Classification Options - Portuguese Download
Technical datasheet Air classification laboratory services - English Download

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