For Precipitated Silica & Fumed Silica Dry Processing
JCSF
Air Classifier
This independent air classifier is a standalone dry grading unit purpose-built for precipitated silica processing, typically paired with jet mills, air classifier mills and other ultrafine de-agglomeration equipment. It delivers precise fineness control via stepless turbine speed adjustment, producing finished silica with narrow particle size distribution and strictly controlled D50 / D90. The full system operates under negative pressure closed-loop design to prevent dust emission and secondary agglomeration during conveying, preserving stable BET surface area and dispersibility — ideal for tire rubber, silicone rubber, coating and plastic additive applications.
Air Classifier
How It Works
Technical breakdown of the core processes and technology behind Air Classifier.
De-agglomerated silica powder is pneumatically conveyed into the grading chamber, where secondary regulating air introduced from the lower side creates a stable swirling airflow that evenly suspends particles. The central high-speed turbine wheel generates a powerful centrifugal field: fine particles pass through blade clearances with the airstream and are collected by cyclones and bag dust collectors as finished product, while denser agglomerates carry greater centrifugal inertia, strike the chamber wall, slide downward and return to the main de-agglomeration unit for reprocessing. Adjusting turbine speed and auxiliary air volume changes the classification cut point to accurately target different silica fineness specifications.
Air Classifier
Technical Parameters
Air Classifier defines excellence through quantified data, meeting the most stringent requirements of high-precision material processing.
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| Model Series: JCSF-V | 250 | 320 | 400 | 450 | 500 | 570 | 630 | 700 | 850 |
|---|---|---|---|---|---|---|---|---|---|
| Particle size (D97 μm) | 6~50 | 6~50 | 8~60 | 8~60 | 10~80 | 10~80 | 12~100 | 12~100 | 12~100 |
| Processing capacity (kg/h) | 50~300 | 80~500 | 120~750 | 150~1000 | 200~1200 | 300~1500 | 380~1800 | 500~2200 | 700~3000 |
| Classifying wheel Speed (r/min) | 500~5000 | 400~4000 | 360~3600 | 340~3400 | 310~3100 | 270~2700 | 240~2400 | 220~2200 | 180~1800 |
| Classifying wheel Diameter (mm) | 250 | 320 | 400 | 450 | 500 | 570 | 630 | 700 | 850 |
| Motor power (kW) | 4 | 7.5 | 11 | 15 | 22 | 30 | 37 | 45 | 55 |
| Model Series: JCSF-H | 60 | 100 | 140 | 230 | 230/4 | 260 | 315 | 315/4 | 315/6 | 500 | 630 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Particle size (D97 μm) | 3~50 | 4~100 | 4~100 | 5~120 | 4~70 | 5~120 | 6~120 | 5~120 | 5~120 | 8~120 | 10~150 |
| Processing capacity (kg/h) | 3~100 | 50~200 | 70~300 | 200~1000 | 600~3000 | 250~1000 | 500~2500 | 1500~7500 | 1500~7500 | 1250~8000 | 2800~19000 |
| Classifying wheel Speed (r/min) | 1500~18000 | 1150~11500 | 1000~8500 | 600~6000 | 600~6000 | 500~4800 | 400~4400 | 400~4400 | 400~4400 | 240~2400 | 160~1600 |
| Classifying wheel Diameter (mm) | 60 | 100 | 140 | 230 | 230 | 260 | 315 | 315 | 315 | 500 | 630 |
| Motor power (kW) | 1.1 | 4 | 4 | 5.5 | 22 | 7.5 | 15 | 60 | 90 | 22 | 30 |
