5.4 describe and explain the main reactions involved in the extraction of iron from iron ore (haematite), using coke, limestone and air in a blast furnace
Iron is displaced from its ore (haematite) by carbon (from coke):
2Fe2O3 + 3C > 4Fe + 3CO2
It is also displaced by carbon monoxide
Fe2O3 + 3CO > 2Fe + 3CO2
Limestone reacts with impurities to from 'slag' which is tapped off.
Air allows burning to take place (of coke.)