GCSE SCIENCE CHEMISTRY HIGH SCHOOL - Extraction of Iron - Blast Furnace - Coke - Reduction - Carbon Monoxide - Reduce

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Extraction of Metals

Extraction of Iron.

Chemistry of the blast furnace.

Hot air is blasted into the furnace causing coke (carbon) to burn rapidly
and raise the temperature to 2000 °C.

carbon + oxygen carbon dioxide + heat.
C_(s) + O_2(g) CO_2(g)

The carbon dioxide then reacts with hot carbon to form carbon monoxide.

carbon dioxide + carbon carbon monoxide.
CO₂_(g) + C_(s) 2CO_(g)

Carbon monoxide then reduces iron in the ore to iron metal.

carbon monoxide + iron(III) oxide carbon dioxide + iron.
3CO_(g) + Fe₂O₃_(s) 3CO₂_(g) + 2Fe_(l)

The temperature where the reduction takes place is above 1500 °C.
Iron falls to the bottom of the furnace where the temperature is 2000 °C.
Iron is liquid at this temperature and is tapped off periodically.

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