METHOD OF PNEUMATIC CLEANING OF NON-ORE MATERIAL WITH FRACTION SIZE UP TO 20 MM Russian patent published in 1994 - IPC

FIELD: non-ore material cleaning. SUBSTANCE: method comprises steps of uniform distribution of an initial material, dividing it by two flows and directing onto inclined surfaces of pouring over shelves, acting upon the material flows along their whole width by air jets, oriented one towards another at discharging the material flows off the shelves and simultaneously pushing the material flows together one to another. EFFECT: enhanced quality of cleaning process. 1 cl, 4 dwg