METAL EXTRACTING AND SEPARATING METHOD OF CU, ZN, CD AND NI FROM THE LEACH LIQUOR OF THE SECONDARY METAL RESOURCES BY SOLVENT EXTRACTION

摘要

PURPOSE: A method for extracting and separating copper, zinc, cadmium, and nickel by solvent extraction from a leaching solution of secondary metal sources is provided to selectively extract and separate valuable metal from leachate using specific organic solvent. CONSTITUTION: A method for extracting and separating copper, zinc, cadmium, and nickel by solvent extraction from a leaching solution of secondary metal sources comprises the steps of: collecting leachate containing valuable metal(S100), adding hydroxyoxime based extractant to the collected leachate and selectively extracting copper(S200), adding cathionic organic extractant to a first filtrate to selectively extract zinc and cadmium(S300), and recovering nickel from a second filtrate(S400).