The product mixture, feeded centred, is distributed evenly over the total width of the separator and reaches the area of separation afterwards. According to the multiple-cross-section-separation procedure the light material is extracted from the product mixture.
The heavy material falls through the ascending air stream and is discharged at the separator base. Light material is discharged together with the exhaust air at the upper part of the separator and conveyed via piping to a cyclone. The separation area is constructed on that way that the rising light material and the falling heavy material do not disturb each other. Thereby light material is steadily discharged, even with high loading. During circulation air mode of the cone separator the total sifting air is circulating. Thus there is no discharged air generated. In this mode a sealing of the separator system though a rotary gate valve is necessary. Required air amount and pressing are generated via centrifugal fan.