FUNCTION The function performed by the pneumatic separator is to segregate using suction systems light and threadlike materials with a lower apparent density from other materials. These light materials are mainly film plastics and press paper, which are present in the following process flows: • Light flat material current from ballistic separation. • Non-passing rejected waste from trommel classification. • Rolling element current from ballistic separation. DESCRIPTION It consists of suction hoods located strategically at specific points of the sorting process through which a selective air current is passed causing a depression that allows the capture and transport of lighter materials (mainly plastic film). These suction mouths are placed at conveyor drops to use the ballistics of the materials between conveyors to aid the suction. In some cases mouths are also installed in these drops to lift the material by air blasts in order to bring it closer to the areas of greatest depression. These light materials are transported by the air current through a pipe suitably sized for this function to a decanting or cyclone chamber in which they are separated from the air. The decanting chambers are installed in conveyor belts in which the selected film is subjected to quality control. The air separated in the decanting chamber and contaminated with suspended dust is transported to a sleeve filter where it is cleaned before returning it to the atmosphere. The air current is generated by a fan installed at the end of the pneumatic capturing system line. TYPES Depending on the criteria applied, pneumatic separation systems can be classified into: Pneumatic separator 1 1. Fan.
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