ammonium ironate leaching of copper

Nov 26 2014 The paper concerns a hydrometallurgical method for selective recovery of copper from lowgrade electric and electronic wastes The following consecutive stages were proposed smelting of the scraps to produce CuZnAg alloy leaching of the alloy in ammoniacal solution and selective copper electrowinning CuZnAg alloy was a polymetallic and fivephase system