Zinc mostly occurs as sulfide ores, which are heated in air to convert them to zinc oxide. Molten close moltenA term used to describe a liquid substance (eg rock, glass or metal) formed by heating ...

Swedish mining company Boliden has inaugurated the expanded Odda zinc smelter in Norway, a century after the region's initial ...

Project Description The Prieska copper mine is located on a significant volcanogenic massive sulphide deposit. The fully permitted mine, which last operated in 1991, has a Joint Ore Reserves Committee ...