Fireclay bricks is not used for lining the__________________?
Correct answer: D. Bottom of hot metal mixer
- A. Cupola
- B. Gas producer
- C. Roof of open hearth furnace
- D. Bottom of hot metal mixer
Explanation
The bottom of a hot-metal mixer is exposed to molten iron and basic slags, so it requires basic refractories such as magnesite rather than fireclay. Fireclay is commonly used in cupolas, gas producers and furnace roofs.
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