Write down the reactions taking place in different zones in the blast

1.	Write down the reactions taking place in different zones in the blast furnace during the extraction of iron.
Answer» Reactions in different temperature zone of blast furnace: At 500 – 800 K 2Fe₂O₃ + CO → 2Fe₂O₃ + CO₂ Fe₃O₄ + 4CO → 3Fe + 4CO₂ Fe₂O₃ + CO → 2FeO + CO₂ At 900 K – 1500K C + CO₂ → 2CO FeO + CO → Fe + CO₂ C + O₂ → CO₂ Above 1570 K – coke acts as reducing agent and CaCO₃ acts as flux FeO + C → Fe + CO CaCO₃ → CaO + CO₂ CaO + SiO₂ → CaSiO₃ (Slag)

Write down the reactions taking place in different zones in the blast furnace during the extraction of iron.

Answer»

Reactions in different temperature zone of blast furnace:

At 500 – 800 K

2Fe₂O₃ + CO → 2Fe₂O₃ + CO₂
Fe₃O₄ + 4CO → 3Fe + 4CO₂
Fe₂O₃ + CO → 2FeO + CO₂

At 900 K – 1500K

C + CO₂ → 2CO
FeO + CO → Fe + CO₂
C + O₂ → CO₂

Above 1570 K – coke acts as reducing agent and CaCO₃ acts as flux

FeO + C → Fe + CO
CaCO₃ → CaO + CO₂
CaO + SiO₂ → CaSiO₃ (Slag)

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Write down the reactions taking place in different zones in the blast furnace during the extraction of iron.

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