What is the role of limestone during the extr | vedclass

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(D) During the extraction of iron from haematite ore $(Fe_2O_3)$,the roasted ore is mixed with coke and limestone and heated in a blast furnace.Coke a

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Flux

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(D) During the extraction of iron from haematite ore $(Fe_2O_3)$,the roasted ore is mixed with coke and limestone and heated in a blast furnace.Coke acts as a reducing agent to reduce iron oxides to metallic iron.Limestone $(CaCO_3)$ decomposes to form calcium oxide $(CaO)$,which acts as a flux.This flux reacts with acidic impurities like silica $(SiO_2)$ present in the ore to form calcium silicate $(CaSiO_3)$,which is known as slag.Therefore,the role of limestone is to act as a flux.

What is the role of limestone during the extraction of iron from haematite ore?

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