SEARCH Articles Figures Tables Concentration extractive metallurgy Extractive metallurgy Extractive metallurgy Extractive metallurgy Electrowinning Extractive metallurgy Hydrometallurgy Extractive metallurgy Pyrometallurgy Extractive metallurgy copper Extractive metallurgy reduction Extractive metallurgy refining Extractive metallurgy roasting Extractive metallurgy thermodynamics Extractive metallurgy, hydrogen Metallurgy Mineral Processing and Extractive Metallurgy of the Rare Earths Principles of Extractive Metallurgy