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Extraction of Metals ­ Iron


Introduction
You will mainly see iron in the form of its alloy ­ steel. Iron is found as an ore in its oxides ­
haematite Fe2O3 or magnetite Fe3O4. Iron is extracted from its ore by reduction with
carbon, this is because carbon is relatively…

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But most will be reduced by carbon monoxide.
First, the coke reacts with oxygen to produce carbon dioxide:














Then the carbon dioxide further
reacts with coke to produce carbon monoxide:




This carbon monoxide then acts as a reducing agent and reduces the haematite to carbon
dioxide and iron:





The iron…

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Because calcium oxide is a base, it reacts with silica which is an acid:




The molten carbon silicate floats on top of the molten iron and it's known as slag, this is
tapped off and used in building rods.









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