Method for recovering gold and other precious metals from carbonaceous ores

摘要

A method for recovering precious metals from carbonaceous ore comprising leaching the ore with a lixiviant solution and then preg- robbingly concentrating the precious metal-lixiviant complexes in solution on to the native carbonaceous component of the ore for subsequent recovery. The preg-robbing capacity of the native carbonaceous component of the ore can be augmented by adding recycled carbonaceous matter or finely ground carbon to the ore-lixiviant mixture.