Classification Equipment
Multi-Rotor Airflow Classifier
The multi-rotor airflow classifier separates fine particles by size using controlled air streams and adjustable rotor speeds. It sits downstream of grinding mills in dry comminution circuits, returning oversize material for regrind while sending fines to collection.
Technical parameters
Multiple rotors improve classification sharpness and capacity. The machine suits minerals that demand a tight particle size distribution, including non-metallic minerals such as limestone, quartz, and talc, as well as industrial powders.
The table lists eight standard models with key performance indicators: production capacity, product fineness, classification efficiency, main motor power, and air consumption. As model size increases, throughput and power rise while fineness can be tuned via rotor speed and air flow.
| Model | Production Capacity (kg/h) | Product Fineness (μm) | Classification Efficiency (%) | Main Machine Efficiency (kW) | Air Consumption (m3/h) |
|---|---|---|---|---|---|
| AF200-4 | 100-1600 | 2-45 | 70-90 | 7.5x4 | 3400 |
| AF200-6 | 200-2400 | 2-45 | 70-90 | 7.5x6 | 5000 |
| AF315-4 | 300-4000 | 2-45 | 70-90 | 18.5x4 | 9500 |
| AF315-6 | 500-6000 | 2-45 | 70-90 | 18.5x4 | 14000 |
| 800-5500 | 3-45 | 70-90 | 22x4 | 13500 | |
| AF400-4 | 1200-8000 | 3-45 | 70-90 | 22x6 | 20000 |
| AF500-4 | 1500-10000 | 5-45 | 70-90 | 30x4 | 21000 |
| AF500-6 | 2200-150000 | 5-45 | 70-90 | 30x6 | 31000 |
Standard-model catalogue figures. Actual capacity, power draw and wear life shift with ore properties, feed gradation and circuit conditions. Use them to shortlist, then confirm the duty by testwork, flowsheet calculation and a written confirmation from the manufacturer.
What decides the selection
Before selecting a model, define the feed material type, its moisture content, required product fineness, and target throughput. The classifier's performance relies on consistent feed properties and a well-sized upstream grinding circuit. Laboratory testing or pilot trials may be needed to confirm achievable cut size and efficiency.
- Target cut size
- Feed pressure and density
- Slurry specific gravity
- Throughput
- Classification efficiency
- Overflow fineness and underflow density
- Wear-resistant lining material
- Number of units in parallel
Other classifying machines
- Spiral Classifier28 models
- XC I Hydrocyclone7 models
- XC II Classification and Thickening Hydrocyclone29 models
- XC III Hydrocyclone10 models
- XHCV Hydrocyclone6 models
- XN Hydrocyclone3 models
- High-Frequency Fine Mesh Vibrating Screen17 models
- Airflow Classifier8 models
ISO 9001 / ISO 14001 / ISO 45001 / ISO 9712 / CE / CSA W47.1 / CNAS accredited laboratory
Send the duty, get a sized proposal
Tell us the ore, the throughput and the target product. Our process engineers come back with a flowsheet position, a model shortlist and the testwork we would need to confirm it.