Air Classifier

Realize the separation of particles of different sizes

According to the centrifugal force, gravity, inertial force, etc. of particles of different sizes in the medium (usually air), different trajectories are generated, so as to realize the separation of particles of different sizes.

  • A variety of classification rotor are available, and the output can be adjusted; speed of wheel is controlled by inverter, particle size can be adjusted freely. The classifying wheel can be made of ceramic materials, without metal pollution, meeting the requirements of high-purity materials.
  • Grinding is in closed system, little dust, low noise in a clean and environmentally friendly process.
  • In conjunction with ball mill, table roller mill and Raymond mill to form closed circulation.
  • Optional explosion-proof design, can also be upgraded to a nitrogen circulation system to meet the processing needs of flammable and explosive oxide materials.

Working Principle

Under the action of the fan, the material moves to the classification area at a high speed from the lower inlet of the classifier with the updraft. Under the action of the strong centrifugal force generated by the high-speed rotating classification turbine, the material is separated, and the fine particles meeting the particle size requirements enter the cyclone separator or dust collector through the blade gap of the classification wheel for collection. The velocity of some fine particles entrained by coarse particles disappears after hitting the wall, and then decreases to the secondary air outlet along the wall of the cylinder. Through the strong washing effect of the secondary air, the coarse and fine particles are separated, the fine particles rise to the secondary classification in the classification area, and the coarse particles drop to the discharge port for discharge.

Related Projects

Technical Parameters

Technical parameters of horizontal single rotor air classifier

Parameter / ModelFW120FW200FW280FW400FW520FW630FW800FW1000
Processing capacity (kg/h)1~1010~20030~50050~800100~1500200~2500400~3000800~5000
Particle size D97:μm2.5~452.5~452.5~452.5~452.5~452.5~454~455~45
Maximum speed of metal classifying wheel (rpm)18000150008000600044503550
Maximum speed of ceramic classifying wheel (rpm)1800015000600044503550
Classification efficiency η%60~80%60~80%60~80%60~80%60~80%60~80%60~80%60~80%
Classification motor power (kW)2.234Belt connection 7.5/ Direct motor connection 7.5Belt connection 11/ Direct motor connection 7.5Ceramic: Belt connection 15; Metal: Belt connection 22/ Direct motor connection 1522/3030/37
Air volume (m³/h)300600~800100014002200~28003000~35005500~60008500~9500

Technical parameters of horizontal multi-rotor air classifier

Parameter / ModelFW400/3FW400/4FW400/6FW630/3FW630/4FW630/6FW800/3FW800/4FW800/6FW1000/3FW1000/4FW1000/5FW1000/6
Processing capacity (kg/h）200~1500300~20001000~60001000~60002000~80003000~120002000~75003000~100005000~150005000~120008000~1600015000~2000020000~24000
Particle size D97:μm2.5~452.5~452.5~452.5~452.5~452.5~453~453~453~454~454~454~454~45
Classification efficiency η%60~80%60~80%60~80%60~80%60~80%60~80%60~80%60~80%60~80%60~80%60~80%60~80%60~80%
Classification motor power (kW)7.5/11*37.5/11*47.5/11*615/22*315/22*415/22*622/30*322/30*422/30*630/37*330/37*430/37*530/37*6
Air volume (m³/h）420056001100011000145002200017000225003350026500350004300052000

Technical parameters of vertical single-rotor air classifier

Parameter / ModelFL200FL300FL360FL450FL600FL800/ITC4FL900/ITC5FL1000/ITC6FL1200/ITC7FL1500/ITC8FL2000/ITC9
Processing capacity (kg/h)100~300200~1000300~15001000~30002000~60005000~80006000~120008000~1500012000~2000015000~3000020000~50000
Particle size D97:μm5~1506~1506~1508~1508~15010~15015~15015~15020~15025~15025~150
Maximum speed of classifying wheel (rpm）29002930147014701480820490370
Classification efficiency η%60~90%60~90%60~90%60~90%60~90%60~90%60~90%60~90%60~90%60~90%60~90%
Classification motor power (kW)47.5111522373745~5555~7575~9090~110
Air volume (m³/h)400~5002400~28003500~40004500~63008000~1100014000~1800018000~2500026000~3000032000~4500050000~6000080000~110000

Technical parameters of vertical single-rotor air classifier

Parameter / ModelFL360/3FL360/4FL360/6FL450/3FL450/4FL450/6
Processing capacity (kg/h）2000~60004000~80006000~150003000~90005000~120008000~24000
Particle size D97:μm5~1505~1505~1508~1508~1508~150
Classification efficiency η%60~90%60~90%60~90%60~90%60~90%60~90%
Classification motor power (kW)334466456090
Air volume (m³/h)9000~1000012000~1500018000~2400015000~1800018000~2400027000~32000

Note: The production capacity is closely related to the particle size, specific gravity, hardness, moisture and other indicators of the raw materials. The above parameters are for reference only, please consult our engineers for details.