Working Principle

The DP® AEROVA Air Classifier operates on the principle of centrifugal force and controlled airflow generated under negative pressure. Material is fed from the top through the feed inlet (1) and enters the classification zone (2), where particles are uniformly dispersed for separation.

Within the classifier housing, the rotating classifier wheel (3) creates a centrifugal field that separates particles based on size and density. A blower installed at the downstream end of the system generates negative pressure inside the classifier, which draws fine particles toward the classifier wheel. To maintain airflow balance, the required make-up air is admitted through the air inlet (4).

Fine particles that meet the set cut-point pass through the classifier wheel and are carried with the induced airflow toward the fine product & air outlet (5) for downstream separation or collection. Particles that are too coarse are rejected by centrifugal force, lose upward momentum, and descend by gravity to the coarse product outlet (6) for discharge or recirculation.

Features & Benefits

• High-precision dry air classification for ultra-fine, uniform powders with sharp cut-point control capable of achieving sizes up to d50 5 microns
• Adjustable cut-point via rotor speed and airflow, enabling fine tuning without downtime.
• Optimized airflow and aerodynamic design improve classification efficiency and energy use.
• Adjustable secondary air-wash system boosts classification efficiency.
• Energy-efficient design reduces operational costs and power consumption.
• Dust-free environment with dust collectors.
• Screen-free classification eliminates mesh blockage and reduces maintenance.