Question

The substance used to reduce iron ore to iron in the lower part of the blast furnace is:

• A. coke
• B. charcoal
• C. carbon monoxide
• D. carbon black

Answer 1

Answer: (A)

coke

The substance used to reduce iron ore to iron in the lower part of the blast furnace is coke.

The main chemical reaction producing the Molten iron is $F{e}_2{O}_3+3CO⟶2Fe+3CO$. This reaction might be divided into multiple steps, with the first being that preheated blast air blown into the furnace reacts with the carbon in the form of coke to produce carbon monoxide and heat.