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Question
What is the role of limestone in the extraction of iron from its oxides?
Solution
Limestone decomposes to form CaO which reacts with silicate impurity in the blast furnace to form slag.
CaCO3 → CaO + CO2
CaO + SiO2 → CaSiO3 (slag)
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RELATED QUESTIONS
Write the reactions involved in the zone of reduction in blast furnace during extraction of iron.
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