Lower wall courses of soaking pits are made of _____________ bricks to avoid the action of molten slag & scale?
Correct answer: C. Chrome or magnesite
- A. Silica
- B. Silicon carbide
- C. Chrome or magnesite
- D. Low duty fireclay
Explanation
Chrome or magnesite bricks are basic, high-temperature refractories that resist attack by molten slag and scale in the lower wall courses of soaking pits. Silica and ordinary fireclay are more vulnerable in this service.
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