- RECOVERY METHOD OF CADMIUM USING TRASH NICKEL-CADMIUM BATTERY

摘要

The present invention relates to a method for recovering cadmium using a spent nickel-cadmium battery. More particularly, the present invention relates to a method for recovering cadmium from a spent nickel-cadmium battery capable of selectively recovering cadmium using a sulfide. One aspect of the method for recovering cadmium using a spent nickel-cadmium battery according to an embodiment of the present invention comprises: a battery powder preparation step in which a cathode and an anode separated from the spent nickel-cadmium battery are pulverized to produce the battery powder; an acid leaching step in which the battery powder reacts with an acid to produce a cell powder leaching solution; a cadmium precipitation step in which the cell powder leaching solution reacts with the sulfide to precipitate cadmium contained in the cell powder; and a cadmium recovery step in which the cell powder leaching solution is washed and dried to recover cadmium.