Question

Metallurgical coke is charged to:

• A. LD convertor
• B. Secondary steel making
• C. Iron blast furnace
• D. Bayer process

Hint:

Metallurgical coke is essential in a \textbf{blast furnace} — it acts as both a fuel and reducing agent to extract iron from its ores.

Answer 1

The Correct Option is C

Step 1: What is Metallurgical Coke?
Metallurgical coke is a carbon-rich solid derived from coal through destructive distillation. It is: - Highly porous, - Strong, and - Essential as a reducing agent and fuel in metallurgical operations. Step 2: Use in Iron Blast Furnace
In the iron blast furnace, coke serves two primary functions:
Fuel: Provides heat energy for the reduction reactions.
Reducing agent: Reduces iron ore (Fe\(_2\)O\(_3\) or Fe\(_3\)O\(_4\)) to metallic iron. \[ \text{Fe}_2\text{O}_3 + 3\text{CO} \rightarrow 2\text{Fe} + 3\text{CO}_2 \] Step 3: Elimination of Other Options
- LD converter: Uses pure oxygen, not coke.
- Secondary steel making: Involves ladle refining, not combustion.
- Bayer process: Extracts alumina from bauxite; coke is not involved. Conclusion: Metallurgical coke is primarily charged into the iron blast furnace during pig iron production.