High thermal conductivity of a refractory material is not important, when it is to be used in the______________________?
Correct answer: C. Blast furnace
- A. Coke oven regenerators
- B. Muffle furnace
- C. Blast furnace
- D. Recuperators
Explanation
High thermal conductivity is desirable in regenerators and recuperators, where heat must be transferred rapidly. A blast-furnace lining mainly needs to withstand chemical, thermal, and mechanical attack, so high conductivity is not its key requirement.
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