A deep-dive into the thermodynamics of the Iron Blast Furnace reveals that the reduction of the primary ore, , by rising gas does not occur in a single step but proceeds through a sequence of oxide in

Question

A deep-dive into the thermodynamics of the Iron Blast Furnace reveals that the reduction of the primary ore, $Fe_2O_3$, by rising $CO$ gas does not occur in a single step but proceeds through a sequence of oxide intermediates. Which of the following represents the correct thermodynamic sequence of these iron oxides as they descend the furnace?

Prashant Kotian · Accepted Answer

Correct answer: B. As the ore descends and the temperature increases, is progressively reduced to states of lower oxygen content. The sequence begins at the top with . Further down, . Finally, .

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