BVS Classifier
BVS air classifier technology is a widely used separation method, especially in applications where extracting very fine particles from a bulk material. The BVS air classifier is a high-efficiency air-swept, centrifugal force classifier for separate dry materials between 10 to 100 mic. The design is customized to suit the process. The BVS classifiers are designed to operate either as an independent, stand-alone system with feeder, fan and filter equipment or in closed circuit with in a conventional milling system. The BVS classifier can be mounted in existing air systems with a minimum of modification and obtained accurate fineness over a wide range of feed variations.
• Controlled grain size obtaining d97 10-100 mic.
• High efficiency due to vertical arrangement of rotor, high top cut sharpness
• Occupy less area. Environmentally friendly with its closed system, dust-free and low noise level
• Ease of commissioning and operation
• Industrial, pilot and laboratory sizes are available
• Protection against wear with steel, stainless, PU or ceramic materials (Al2O3)
• Pressure less or pressure-shock proof to 8 bar.
The feed material enters the classifier with the main airflow. This means that integrating the classifier into a system with direct pneumatic feed offers economic benefits. The classifying rotor is driven by either a belt or a direct drive with an electric motor. Its speed can be adjusted using a frequency converter, allowing the particle size to be easily controlled even during operation by altering the rotor speed. Fine particles, whose size is below the set cut point, are transported through the rotor blades along with the classifying air. They are then discharged via the fines outlet, entrained in the main airflow, and finally collected in a suitable bag filter. Coarse particles are rejected by the classifying rotor and discharged via the coarse material outlet. Before discharge, the coarse material is intensively rinsed in a spiral flow generated by secondary air. This removes any remaining fine particles, enhancing the precision of the cut and increasing the fine material yield.
| BVS | Tip | BVS150 | BVS200 | BVS315 | BVS500 | BVS650 |
|---|---|---|---|---|---|---|
| Drive | kW | 4 | 5,5 | 11 | 22 | 30 |
| Speed | rpm | 8000 | 6000 | 3800 | 2400 | 1800 |
| Air flow rate | m³/h | 600 | 1200 | 3000 | 7500 | 12000 |
| Fineness | d97 mic. | 10-75 | 10-75 | 10-85 | 15-100 | 20-150 |
| Capacity | d97 mic. | - | - | - | - | - |
| 10 mic. | t/h | 0.06 | 0.12 | 0,3 | - | - |
| 20 mic. | t/h | 0.12 | 0.25 | 0,62 | 1,5 | 2,5 |
| 45 mic. | t/h | 0.2 | 0.4 | 1 | 2,5 | 4 |
| Classifier Motor | Al2O3 Coating |
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| With Mill Circuit | Individual Arrangement |
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