Which is not a basic refractory ?
Correct answer: A. Silicon carbide
- A. Silicon carbide
- B. Magnesite
- C. Dolomite
- D. Chrome magnesite
Explanation
Magnesite, dolomite, and chrome-magnesite are basic refractories because their oxides react preferentially with acidic impurities. Silicon carbide is generally classified as a neutral refractory, so it is the exception.
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