Which of the following bricks has the most close values of RUL and PCE ?
Correct answer: A. Silica bricks
- A. Silica bricks
- B. Fireclay bricks
- C. High alumina bricks
- D. Tar dolomite bricks
Explanation
Silica bricks have closely matching values of refractoriness under load (RUL) and pyrometric cone equivalent (PCE) because their high-temperature deformation closely follows their softening point. This relationship is less close in fireclay and high-alumina refractories.
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