DRY PURIFICATION APPARATUS AND METHOD FOR MAINTAINING AS LOW AS POSSIBLE THE QUANTITY OF SUSPENDED DUST AROUND A SIZE FRONT IN CHARCOAL MINE OPERATION

摘要

METHOD AND APPARATUS FOR ELIMINATING THE DUST EMANTING FROM THE SIZE FRONT EXPLOITED FROM A COAL MINE. /P P THE FAN 42 OF THE APPARATUS INTAKE THROUGH AN INTAKE 22 THE AIR PASSING OVER THE FRONT OF SIZE. BETWEEN THIS ORIFICE AND THIS FAN, THE APPLIANCE INCLUDES A GRILLE 140, A FIRST STAGE 40 OF VERY SMALL 54 ADJACENT CYLINDRICAL CENTRIFUGES IN WHICH TURNS THE DUST-LOADED SUCTION AIR, WHICH IS CONCENTRATED IN A SEPARATELY PERIPHERAL ANNULAR PART, AND IS ASPIRED. COMES TO DEPOSIT IN A REMOVABLE BIN 90, AND A SECOND STAGE 82 OF IDENTICAL 98 CENTRIFUGES TO REMOVE THE FINES NOT DEPOSITED IN THE BIN 90. THE FAN COMBINES THE VARIOUS CURRENTS OF CLEAN AIR THAT IT RETURNS TO THE RETURN GALLERY OF THE MINE. /P P APPLICATIONS ESPECIALLY IN COAL MINES WITH VERY THICK VEINS.