Collahuasi mine is a large copper mine located at a high altitude of 4,000m in the north of Chile in the Tarapacá Region and represents one of the largest copper reserves in Chile and in the world, having estimated reserves of 3.93 billion tons of ore grading 0.66% copper. Lying in an area of historical copper mining, the deposit was outlined in 1991. The mine was commissioned in April 1999 and completed an expansion program in 2004, giving the mine a long-term capacity of 500,000t/yr of copper.
The processing area consists of both oxide and sulphide plants. Oxide and mixed ores are treated by heap-leaching, solvent-extraction, and electro-winning (SX-EW). Sulphide ore is crushed, ground and treated by flotation.
We were approached by our customer, Collahuasi to conduct a survey on the thickener to optimize feed conditions to optimize thickening performance.