Afte fully mixing the coal slime and medicament,feeding into the cell bottomof the flotation machine's first chamber.With the impeller raotating ,the coalslime and the medicament form a negative pressure , make the ore pulp in thebottom and middle of the cells separately enter into the mixing area through thedown suction and the up suction ,and make the air enter into the mixing areathrough airway tube.And the ore pulp ,air and the medicamentmix in the mixingarea.Under the function of the impeller centrifugal force,the mixed ore pulpenter into the mineralization area.Then the air form bubble,be crushed,fullytouch with the coal particle,form the mineralization bubble,equably distributein the cell body section ,move up to the separating area,gather forming the foamlayer,expel from the scraping institution and finally form the clean coalfoam.The coal particle which has not been mineralised will mix again through thecirculation ports and the up suction.The partial ore pulp which has not beenabsorbed by the impeller finish the whole process of the first suction and enterinto the through the ore box enter into the second chamber.The flotation machinego round and round like this .And the ore pulp discharge from the last suctionto the the tailing box and expel the final tailings.