Which reaction in the blast furnace regenerates the reducing gas $\mathrm{CO}$ from $\mathrm{CO}{}_2$?

More questions on Roasting, calcination and reduction

• The negative slope of the Ellingham line for 2C + O2 -> 2CO arises because JEE Main level
• Sulphide ores are generally roasted to oxides before reduction with carbon mainly because JEE Main level
• In the self-reduction 2Cu2O + Cu2S -> 6Cu + SO2, the reducing agent is JEE Main level
• In the reduction ZnO + C -> Zn + CO carried out near 1673 K, zinc is obtained as vapour that is condensed, because JEE Main level
• Chromium(III) oxide is reduced by aluminium rather than by carbon in the metallurgy of chromium. Which Ellingham-based statement supports al... JEE Main level
• Which of the following, on simply heating in air, gives the metal directly through auto-reduction? JEE Main level