Limestone is used as a flux in the extraction | vedclass

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(A) Limestone $(CaCO_3)$ is used as a flux in the extraction of iron. In the blast furnace,it decomposes at high temperatures to form calcium oxide $(

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(A) Limestone $(CaCO_3)$ is used as a flux in the extraction of iron. In the blast furnace,it decomposes at high temperatures to form calcium oxide $(CaO)$ and carbon dioxide $(CO_2)$. $CaCO_3 \rightarrow CaO + CO_2$ The calcium oxide $(CaO)$ acts as a basic flux and reacts with the acidic impurity silica $(SiO_2)$ present in the ore to form fusible calcium silicate slag $(CaSiO_3)$. $CaO + SiO_2 \rightarrow CaSiO_3$ (slag)

Limestone is used as a flux in the extraction of

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