These classifiers use centrifugal forces, similar to cyclones, to separate particles at cutpoints between 15 and 100 microns. The feed material is carried into the classifier by the primary inlet flow stream. Internal baffles apply drag forces to the coarse particles while allowing air to pass through them for separation of the fines. The heaviest particles drop to the bottom of the classifier and are discharged through a valve.
 |  | Classifier uses air flow, gravity and directional changes to achieve material cutpoints from 15 to 100 microns. |
Prior to discharge, a secondary air stream enters into the bottom of the classifier and passes through the material. Particles near the cut point in size are returned to the classifier chamber. The air stream carrying the fine particles follows a spiral path to the outlets on each side of the unit.
The two air streams combine and enter a cyclone for final recovery of fine particles. A manual adjustment to the secondary air damper will provide a change in the size of the fines being separated. Because there are no moving parts within the material flow stream, the need for maintenance is minimized. Centrifugal classifiers are suitable for: - Fines separation of particles for industrial as well as food and pharmaceutical applications
- Fly ash beneficiation for concrete additive
- Increased process throughput over screens
Main benefits of Centrifugal classifiers are: - Wide range of cut point adjustability between 15 to 100 micron range
- Increased throughput compared to dynamic rotary classifier, lower maintenance cost
- High efficiency separation
Main features of Centrifugal classifiers are: - Cut point adjustability using interchangeable orifices and secondary air
- Virtually no internal parts within classifying material flow stream
- Low cost alternative to dynamic rotary classifier
- Internal Lining – AR Plate or Ceramics available for high abrasive applications
To learn more about Centrifugal Static Classifiers go to the REQUEST MORE INFO button above or click on the DIRECT CONTACT button to reach Metso directly.
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