SortingAir classification



SAS (side charge) Type Air Separator is a dry classifier mainly used for classification of cement, silica sand, slaked lime, and clay. The circulating gyratory airflow is used for efficient dispersion and the centrifugal force enables mass processing.

The double structure of outer and inner cylindrical casings has a vertical shaft in the center to which main and sub vanes and a dispersion disk are attached to turn slowly. The circulating airflow caused by the main vane rotation is ascending in the inner cylinder casing. The material is fed from the top supply port through the fixed hopper onto the center of the dispersion disk and scattered by centrifugal force. The fine particle portion is carried by the circulating airflow to go out to the outer cylinder and then downward along the outer cylindrical casing and discharged from the fine powder outlet. The coarse powder portion falls along the inside walls of the inner cylindrical casing and passes through the cone casing to be discharged from the coarse powder outlet. The classification point is adjusted by the number of sub vanes and opening of the valve plate to obtain the target particle size.


  1. The air separator generates classifying airflow using the embedded main vane and no external blower is required.
  2. A cyclone or a bag filter for fine particle collection is also unnecessary.
  3. The product particle size is adjusted while the machine is stopped and can be controlled finely.
  4. The classification point in the range from 30 μm to 250 μm can be set.
  5. A large process amount can be specified. (Maximum feed: 1000 ton/h)


  1. Classification of cement, limestone, slaked lime, quicklime, silica sand, coal, clay, carbide, etc.
  2. Also applicable to special materials such as plant fiber.


Inform us about the followings for inquiry of SAS Type Air Separator.
  1. Material to process

    Ingredients, feed amount ton/h, temperature, particle size distribution, true specific gravity, bulk specific gravity, water content (up to 1% in general for typical usage)

  2. Product

    Classification point (μm or Blaine), allowable coarse particle inclusion %, desired temperature at the outlet

  3. Power supply

    Voltage and frequency

  4. Other information

    Type and size of the mill to combine, necessity of optional air-cooled duct