Q. 294.3( 3 Votes )

Wrought iron is the purest form of iron. Write a reaction used for the preparation of wrought iron from cast iron. How can the impurities of sulphur, silicon and phosphorus be removed from cast iron?

Answer :

Wrought iron is the purest form of commercial iron and is obtained from cast iron by oxidising the impuritiesina reverberatory furnace lined with haematite.

Fe2O3 + 3 C 2 Fe + 3CO


Limestone is added as flux to remove the impurities of sulphur, silicon and phosphorous. They form a slag which can be easily removed. The metal is removed from the slag by passing through rollers.


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