Air Separator

Air Density Separator / Wind shifter / Wind sifter

Air density separation / wind shifting / wind sifting is a method of separating waste based on the density of material using the principles of controlled air. The input material is separated into two fractions varying from light to heavy.

Kiverco density separators feature a combination of twin recirculation fans, a separation area with rotating drum and an expansion chamber. The DS 150 is a closed-loop system which greatly reduces the volume of dust created.

Density separation is used as a method of separating or cleaning within Construction and Demolition (C&D), Commercial and Industrial (C&I) or Municipal Solid Waste (MSW) environments.

The ability to adjust the direction and power of both the blowers and the accelerator feeder belt allows for much greater control and therefore better separation rates compared to conventional air blowers. 


  • Removes unwanted product and controls calorific value during RDF / SRF production
  • Delivers a clean aggregate / wood spilt
  • Delivers a clean aggregate as part of a fines’ treatment process
  • Fast, easy adjustment and control of input materials
  • Easy to maintain
  • Low dust emissions
  • Highly cost effective 
  • Construction and Demolition Waste
  • Commercial and Industrial Waste
  • Municipal Solid Waste
  • Waste to Energy RDF / SRF Production 

As well as the Kiverco DS150, we also work with global leading partners such as Walair and Nihot to integrate larger two and three-way drum separators into MRF’s / recycling plants. 

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Other Modular Components

All models in the Kiverco Modular Range can be combined to form a complete recycling system. Below are other modular components.

The Modular FT carries out the initial screening of different sized material. This machine can be combined to form a complete recycling system along with the Modular PS Picking Station and Modular DS Density Separator.

  • Fully enclosed with roof and outlet covers, which greatly minimises noise and dust
  • Diesel electric powered with the option of mains electric power.
  • Pre-wired ‘Plug and Play’ Design
  • Wide Core Radiator
  • Heavy Duty Feeder and Drum

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feeder trommel

The Modular PS Picking Station offers unrivalled set-up simplicity, operator comfort, safety and environmental protection. It combines air separation, magnetic separation and manual sorting – all in one modular unit.

  • Integrated air separation to produce clean product
  • Integrated magnetic separation to recover ferrous metals
  • 2 to 6 bay sorting to recover clean stone, wood, paper, plastics, card etc
  • Pre-wired ‘Plug and Play’ Design
  • Variable Speed 1200 mm Wide Picking Belt
  • Wide Core Radiator
  • Diesel Electric Drive

For more info

Picking Station