Chromite refractories_____________________?
Correct answer: D. All A., B. and C.
- A. Are bonded with lime and clay
- B. (Free from silica) have better thermal fatigue resistance than silica and magnesite refractories.
- C. Are resistant to basic slag
- D. All A., B. and C.
Explanation
Chromite refractories are relatively neutral, tolerate basic slags, and their silica-free composition gives better thermal-fatigue resistance than silica refractories. They are also made with bonding additions such as lime and clay, so all the statements are intended to be correct.
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