The BBS Air Belt Separator classifies the input material into a lightweight and a heavyweight fraction. Suitable input for an air sifting machine for best separation results and high throughputs is free-flowing, preconditioned material with a defined particle size. The infeed material is evenly fed onto the acceleration belt. The input material passes a nozzle in free fall that is located under the head of the acceleration belt. Very light components are blown out of the stream over the arch belt directly into the settling chamber. In the transfer area, very heavy parts fall down on a heavymaterial discharge belt. All other particles bounce against the arch belt and are also separated into light and heavy fractions by the radius and the adjustable inclination of the arch belt. In the settling chamber the light fraction is separated from the air stream and discharged by the light material discharge belt. The separator operates in recirculation mode. A second fan extracts the dust-laden air through a filter from the settling chamber and transfers the cleaned air to the surroundings. The separated dust is supplied to the light material fraction. Core advantages: - Integrated filter unit - High recovery rate of light fraction- Numerous adjustment parameters allow machine adaptation to reach an optimal separation result with different materials