Carbon refractories are exclusively used in the_________________?
Correct answer: A. Hearth of blast furnace
- A. Hearth of blast furnace
- B. Walls of coke oven
- C. Regenerators of coke oven
- D. Side wall of soaking pits
Explanation
Carbon refractories are used chiefly in the hearth of a blast furnace because carbon resists attack by molten iron and slag and tolerates severe thermal conditions. Their oxidation at high temperatures limits use in exposed furnace walls.
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