Recent exploration successes at Collahuasi have placed the district as the world's largest, as yet undeveloped, copper resource. Now, in the final feasibility stage, two separate porphyry copper deposits, each with important secondary enrichment zones, contain a combined total tonnage of over 1.5 billion metric tons, with an average grade exceeding …
Where the circuit is SAG mill capacity limited and the ball mill has excess capacity, operational practice is often to target a specific flotation feed size and to keep it at this value regardless of the SAG mill throughput and kWh/t. Collahuasi tends to be ball mill capacity limited and hence is operated in a way similar to that implied by Eq ...