Copper concentrate is the result of a flotation process after the copper ore has been mined and milled. Copper concentrate is an intermediate product used as raw material in the production of copper metal. The quality of different copper concentrates can vary but copper sulphide concentrates are the most common and they typically contain around 30 per cent copper, 30 per cent iron and 30 per cent sulphur. Besides these elements they generally also contain some gold and silver.
Boliden currently produces copper concentrate at its Aitik, Boliden area and Garpenberg mines in Sweden.