Basic and simplest dust extraction system used by MetalERG. This is the so-called. The sedimentation chamber, designed to remove the largest fraction of dust in the exhaust gas. It operates on a cyclone basis (centrifugal force), which causes larger solids in the exhaust gas to separate and fall into the ash container and the dedusting exhausts are directed to the chimney. The used steering wheel force the correct flow at the highest possible speed to achieve maximum centrifugal force. The efficiency of this device is about 40% in terms of the largest dust fraction.