Exergy accounting applied to metallurgical systems: The ...
2013-12-1 · Nickel production from sulphide ores involves either underground (95%) or open cut mining (5%). The processes to produce nickel from sulphide ores include several steps: ore mining, beneficiation, drying, roasting, smelting, converting, sulphuric acid, leaching, reduction, electrolysis, purification of leachate and carbonyl.