METHOD FOR EFFECTIVELY RECOVERING VALUABLE METALS FROM WASTE ORE TAILINGS, WASTE PRINTED CIRCUIT BOARDS OR LOW-GRADED ORE

摘要

PURPOSE: An economical and environmental friendly method for recovering valuable metals is provided which effectively recovers valuable metals such as gold, silver, copper and zinc from waste ore tailings, waste printed circuit boards or low-graded ore is provided, and prevents environmental contamination at the same time. CONSTITUTION: The method for recovering valuable metals from waste ore tailings, waste printed circuit boards or low-graded ore comprises the steps of adsorbing gold, silver, copper and zinc on the resin by passing cyanide leaching solution of waste ore tailings, waste printed circuit boards or low-graded ore through a cation exchange resin; recovering gold/silver metals by adding copper powder to the extracted solution containing gold/silver ions after extracting gold/silver adsorbed in the resin using a solution containing Cu(CN)2¬-1 ions as an extractant; and recovering copper/zinc metals by solvent extracting and electrolyzing the extracted solution after extracting copper/zinc adsorbed into the resin using as an extractant a mixed solution in which H2O and H2O2 are mixed with the gold/silver constituent removed resin.