SortingAir classification



TMS (two-motor) 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 particle separation and classification and the centrifugal force enables mass processing.

In addition, the two motors that drive the main and sub vanes separately facilitate adjustment of the product particle size during operation.

The double structure of outer and inner cylindrical casings has the concentrically rotating hollow and central shafts equipped.

The main vane is attached to the hollow shaft while the sub vanes and the dispersion disk are to the central shaft. They are driven by different motors. The circulating airflow caused by the main vane rotation is ascending in the inner cylinder casing. The material is directly fed onto the dispersion disk by means of the air slide and scattered by centrifugal force. The fine particle portion is carried by the circulating airflow downward along the outer cylindrical casing and discharged from the fine powder outlet.

Coarse powder descends in the inner cylindrical casing while cleaned by the airflow and it is discharged from the coarse powder outlet. As described above, TMS Type Air Separator has the main and sub vanes driven by different motors and the variable speed motor is used for the sub vanes, allowing adjustment of the product particle size during operation by controlling the rotational speed of the sub vanes.


  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 can be adjusted during operation.
  4. The classification point in the range from 20 μm to 250 μm can be set.
  5. A large process amount can be specified. (Maximum feed: 250 ton/h)


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


Inform us about the followings for inquiry of TMS 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