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  • 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?

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?

Answers (1)

Wrought iron is an alloy with a very low carbon content (less than 0.08%).

The reaction is:

Fe_{2}O_{3}+3C\rightarrow 2Fe+3CO
 
In extraction of cast iron from haematite ore, on addition of limestone as flux, the impurities of sulphur, silicon and phosphorus pass into slag on changing to their oxides.

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infoexpert23

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