The wind cleaner is a pneumatic cleaning system designed to remove heavy pollutants from recycled wood fines, both wet and dry. The machine utilizes a cleaning chamber fitted with adjustable feeding flaps and sifting sections based on sequentially differentiated fluidization speeds. Thanks to the fan drive and the discharge cyclone with a rotary valve, the wind cleaner efficiently separates minerals such as sand, stones, and metals, as well as atypical pollutants like plastics, rubber, and glass. This process ensures improved panel machinability and total protection for downstream equipment, operating with low energy consumption and simplified maintenance requirements.