Copper concentrate is the fundamental raw material used to make copper. In nature copper can be found in a great many minerals, at a percentage ranging between approximately 0.5% and 10%. Once these minerals have been mined, various processes are applied to increase the copper concentration to 20 to 35%.
Copper concentrate arrives by ship at Huelva’s outer harbor, where there are mooring facilities for ships of up to 50,000 tons. After it is unloaded, the copper concentrate is carried to the plant in lorries, where it is stored.