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Magnesia-based refractories are widely used in lime kilns due to their desirable properties, but are vulnerable to hydration. When magnesia comes into contact with water or steam, it hydrates to form magnesium hydroxide, which causes a large volume expansion that can crack and disintegrate refractory bricks. The degree of hydration depends on factors like magnesia content, structure, temperature, and surface area. Finer magnesia particles with a larger surface area hydrate more quickly. Well-fused magnesia
- Author
- jitendra
- Language
- EN