The purest form of iron is prepared by oxidising impurities from cast – InterviewSolution

1.	The purest form of iron is prepared by oxidising impurities from cast iron in a reverberatory furnace. Which iron ore is used to line the furnace ? Explain by giving reaction.
Answer» Solution :The lining of FURNACE is done by Haematite `(Fe_2O_3)` which oxidises CARBON to `CO`. ` Fe_2O_3 + 3C to 2Fe + 2CO` The impurities of sulphur, silicon and PHOSPHORUS are oxidised to `SO_2, SiO_2 and P_4O_10` respectively `SO_2` ESCAPES out while `SiO_2` and `P_4O_10` are REMOVED as slag.

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