Air Classifier

The air classifier is a dry powder classification device. It relies on the centrifugal force generated by the rotor, combined with an airflow, to achieve particle size separation. The introduction of secondary air helps disperse agglomerated powders and improves classification accuracy.

Equipped with forced vortex classification technology, the equipment allows for precise particle size control by adjusting the impeller speed and air volume. The complete system comprises a feed controller, the main classifier, a cyclone collector, a pulse dust collector, and an induced draft fan. With customizable processing capacities, it is highly suitable for both experimental R&D and industrial mass production.

This equipment is widely used for the precision classification of powders across multiple industries. Typical materials include silicon carbide, diamond, quartz, kaolin, epoxy resin additives, herbal medicines, antibiotics, aluminum powder, magnesium powder, and phosphors.

It is especially suitable for applications that demand zero iron contamination and a narrow particle size distribution, such as ceramic glazes and pharmaceutical ultrafine powders.

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ADVANTAGES

1.High Efficiency & Energy Saving: Features a low-speed vertical impeller classification structure that ensures a stable material flow field. This design delivers high processing capacity and excellent classification efficiency.

2.High Precision: The vertical impeller is paired with advanced sealing technology to completely prevent coarse particles from leaking. This guarantees high classification accuracy, a concentrated particle size distribution, and a wide classification range, handling powders from 200 mesh up to 3000 mesh.

3.High Flexibility: Supports multi-stage series production to yield multiple particle size fractions. It can also be integrated with ball mills to form a closed-circuit system.

Smart & Eco-Friendly: Equipped with variable frequency speed control and PLC automatic control. Operating under negative pressure, it ensures dust emissions are strictly maintained at ≤15mg/m³.

4.Material Adaptability: Internal components are lined with wear-resistant materials like ceramics. This significantly reduces equipment wear, prevents product contamination, and ensures high product purity.

PRODUCT STRUCTURE

The air classifier is a forced classifier featuring secondary air intake and a vertically installed large impeller. During operation, the material is drawn into the lower cylinder by the induced draft fan and rises to the classification zone. Due to the high-speed rotation of the classification impeller, the particles are subjected to both the centrifugal force generated by the impeller and the centripetal force produced by the induced draft fan.

When the centrifugal force exceeds the centripetal force, coarse particles larger than the classification diameter are flung against the inner wall of the cylinder. They lose momentum and slide down along the wall. Meanwhile, secondary air enters through evenly distributed air inlets on the cone, creating an air-sieving effect on the coarse particles. This effectively separates any fine powder mixed in or adhering to the coarse material.

The separated coarse material is collected and discharged from the classifier via a discharge device. Fine particles smaller than the classification diameter enter the cyclone collector and pulse dust collector along with the airflow to be collected. The purified gas is then exhausted by the induced draft fan.

TECHNICAL PARAMETERS

Specifications	Processing capacity (feeding amount) (kg)	Classification efficiency (%)	Product particle size (um)	Matching power (kw)
GF010	10—50	70—90	D97=5—50	7
GF020	50—350	70—90	D97=5—50	15—19
GF050	100—800	70—90	D97=5—50	25—30
GF100	300—1500	70—90	D97=5—50	41—48
GF200	500—4000	70—90	D97=5—50	63—73
GF400	2000—5000	70—90	D97=5—50	97—120
GF500	3000—6000	70—90	D97=5—50	110—130
GF600	4000—8000	70—90	D97=5—50	110—169
GF800	6000—12000	70—90	D97=5—50	170—210
GF1200	8000—20000	70—90	D97=5—50	230—380

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