Pyrometallurgy:
The process of conversion of metal oxides to metal by heating vigorously at high temperature with reducing agent is known pyrometallurgy.
For example : Reduction of oxides of iron and copper is carried out in the blast furnace at high temperature.
Fe2O3 + 3C \(\overset{\Delta}{\longrightarrow}\) 2Fe + 2CO
Fe2O3 + 3CO \(\overset{\Delta}{\longrightarrow}\) 2Fe + 3CO2