Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the_________________?
Correct answer: D. Washing action of metal
- A. Neither A. nor B.
- B. Corrosion by layer of slag
- C. Both A. & B.
- D. Washing action of metal
Explanation
Mullite bricks in the upper portion of a hot-metal mixer are selected mainly to resist the erosive washing action of moving hot metal. The stated service requirement is not primarily resistance to slag-layer corrosion.
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