GOLD RECOVERY FROM COPPER RICH ORES EMPLOYING
Cyanidation is still the most widely used method to leach gold, using sodium or calcium cyanide as lixiviant. An anionic gold cyanide complex is formed that is extractable by basic resins. Other metals present in the ore, such as silver and base metals (copper, nickel, cobalt, zinc, iron, etc.) are also leached in cyanide media.