Operating principle:
Classifier, together with cyclone separator, dedusting filter and radial fan, forms
a system of classification. Under the lashing force of radial fan, feed materials
are brought with uprising air stream into classifying cavity from feed inlet
of classifier. Under strong centrifugal forces of high-speed rotating turbo wheels,
coarse and fine materials are separated. Fine materials in line with size
requirements go into cyclone separator or dedusting filter through clearances among
vanes of classifying wheels, while coarse materials, together with some fine
materials, lose speed after bumping against wall and fall to secondary draught.
During strong washing of the secondary drought, coarse and fine materials are separated once again. Fine materials go up to classifying cavity to be classified
continuously, while coarse materials fall down to discharging outlet and let out.

Performances and features (FL series air-stream classifier)
Suitable for accurate classification of dry micro-products with spherical,
needle-like or piece-shape and different densities.
Particle size: D97:8-150μm, adjustable and changeable.
Classifying rate: 60%-90%. The better the fluidity is, the higher the classifying
rate is, and otherwise it is low.
Vertical classifying turbo-wheel, low rotating speed, wear -resistance and
low installed power.
To connect multi-grades classifiers to produce different sizes of distributions.
To connect with ball mill, vibration mill and rolling mill to form a closed
circuit.
Programmable control system, real-time operation status and simple operation.
Running under negative pressure. Throughput of dusts is less than 40mg/cbm.
Noise is lower than 75dB(A) during silencer.

FL series airstream grading machines technical parameters  

Applications:

Being widely used in chemical industry, minerals (esp. CaCO3, Kaolin, quartz, talc and mica), metallurgy, grinding materials, ceramics, fire-proof material, medicie, farm chemical, health stuff and new materials.