Refractories used in/for ______________ should have low thermal conductivity?
Correct answer: D. Insulation
- A. Coke ovens
- B. Muffle furnaces
- C. Regenerators
- D. Insulation
Explanation
Insulating refractories are selected for low thermal conductivity so they reduce heat loss through furnace walls. Coke ovens, regenerators, and muffle furnaces primarily require refractoriness and resistance to chemical or thermal attack.
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