Question
Question: Which one of the following reactions occurs during smelting in the reduction zone at lower temperatu...
Which one of the following reactions occurs during smelting in the reduction zone at lower temperature (in iron metallurgy)?
A
CaO + SiO2⟶CaSiO3 (slag)
B
Fe2O3 + 3C ⟶ 2Fe + CO
C
3Fe2O3 + CO⟶2Fe3O4 + CO2
D
CO2 + C ⟶ 2CO
Answer
3Fe2O3 + CO⟶2Fe3O4 + CO2
Explanation
Solution
At lower temperature following reactions occur in blast furnace.
3Fe2O3 + CO ⟶ 2Fe3O4 + CO2 ; Fe3O4 + CO ⟶ 3Fe + 4CO2 ; Fe2O3 + CO ⟶ 2FeO + CO2