Write down the reactions taking place in different zones in the blast furnace during the extraction of iron.
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The reactions which are occurred at the lower temperature (500-800 K) range are following -
3Fe2O3 + CO → 2Fe3O4 + CO2, Fe3O4 + 4CO → 3Fe + 4CO2, Fe2O3 + CO → 2Fe3 + CO2 .
The reactions which are occurred at the higher temperature (900-1500 K) range are following -
C +CO2 → 2CO, FeO + CO → Fe + CO2.
The reaction for the removal of impurity are following -
CaCO3 → CaO + Co2, CaO + SiO2 → CaSiO3.
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