Table of Contents Potassium Sodium Calcium Magnesium Aluminium Carbon Zinc Iron Lead Copper Mercury moon phases

Learning Zone - The Chemical Reactivity Series The blast furnace The raw materials (haematite, coke and limestone) are fed into the top of the furnace. Hot air is blasted into the furnace from the bottom. Oxygen from the air reacts with coke to carbon dioxide. carbon + oxygen —> carbon dioxide C(s) + O2(g) —> CO2(g) The carbon dioxide reacts with more hot coke to make carbon monoxide gas. carbon dioxide + carbon —> carbon monoxide CO2(g) + C(s) —> 2CO(g) Carbon monoxide is a reducing agent which reduces iron oxides into iron. iron (III) oxide + carbon dioxide —> iron + carbon dioxide Fe2O3(s) + 3CO(g) —> 2Fe(l) + 3CO2(g) The iron formed is molten and sinks to the bottom of the furnace. It is then run off into moulds. The impurities in the iron ore are removed by the limestone to form a molten slag. This slag floats on top of the molten iron and is tapped off, cooled and used for making roads.

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