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CGP EDU Academic Team
Published on: August 14, 2026
In the extractive metallurgy of iron from haematite ore, lime stone is added during smelting. Explain why.
Text Solution
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Remove the infusible impurities of silica as slag
CaCO 3 ⎯→ CaO + CO 2 ; CaO + SiO 2 ⎯→ CaSiO 3 (slag)
formed CO 2 reacts with carbon and form CO which works as reducing agent
CO 2 + C ⎯→ 2CO
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