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Air Classifier Operating principle: Classifier, together with cyclone separator, dedusting filter and radial fan, forms a closed loop system of powder classification. Under thesuction 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. 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: - Suitable for accurate particle classification of dry micro-products with spherical, needle-like or piece shape and different densities. - Particle size adjustable between d97: 2um and d97: 150um. - Classifying rate can reach 60%-85%. The better the fluidity is, the higher the classifying efficiency, otherwise itwill belower. - Horizontal classifying turbo-wheel, high rotating speed, accurate top point cutting. - 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.Dust emissionless than 40mg/m3. Noise is lower than 75dB (A) through silencer. Multi-rotor: Type ParametersFW400/3FW400/4FW400/6FW630/3FW630/4FW630/6FW800/3FW800/4FW800/6Throughout T/h0.2-1.50.3-20.5-31-52-83-102-83-105-15Particle Szie d97: um2-452-452-453-453-453-454-454-454-45Efficiency %60-8060-8060-8060-8060-8060-8060-8060-8060-80Power kw90-110120-140170-200135-155170-190250-290180-200220-290290-390Single-rotor:Type ParametersFW200FW280FW400FW520FW630FW800Throughout kg/h10-10020-20050-500100-1500200-2000400-4000Particle Size d97:um2-452-452-453-453-453-45Efficiency %60-8060-8060-8060-8060-8060-80Power kw7-1115-1921-2823-3052-6067-77