Improving leaching recovery of copper from low-grade chalcopyrite ores
Minerals & Metallurgical Processing
, 2013, Vol. 30, No. 3, pp. 180-185
Ekenes, J.M.; Caro, C.A.
New approaches that increase hydrometallurgical recovery from refractory minerals in below mill cutoff -grade sulfide copper ore can add significant value, improve profitability and increase ore reserves. This paper describes the development and implementation of an engineered heap (EH) approach to leaching low-grade, chalcopyrite-bearing ore at Freeport-McMoRan’s mine in Morenci, AZ. The technical evolution of the engineered heap concept is described together with the challenges and benefits following implementation.