Dolomite bricks have good resistance to attack by_____________________?
Correct answer: D. Molten steel
- A. None of these
- B. Iron oxide
- C. Lime slag
- D. Molten steel
Explanation
Dolomite bricks are basic refractories containing calcium and magnesium oxides, and they resist contact with molten steel in steelmaking furnaces. They are not selected primarily for resistance to acidic attacks such as those involving silica-rich materials.
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