10 to 30% magnesite is added to Chromite to produce chrome-magnesite refractories. Magnesite addition is mainly done to improve the _____________ of Chromite?
Correct answer: A. Spalling resistance
- A. Spalling resistance
- B. Refractoriness
- C. Crushing strength
- D. Resistance to slag
Explanation
Magnesite helps chrome-magnesite refractories withstand sudden temperature changes, so its principal benefit is improved thermal-spalling resistance. It is not added mainly to increase chromite's refractoriness or crushing strength.
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