High porosity refractory bricks have _______________?
Correct answer: D. All A., B. and C.
- A. Poor resistance to the penetration of molten slag, metal & flue gases
- B. Poor heat conductivity & low strength
- C. Better thermal spalling resistance
- D. All A., B. and C.
Explanation
High porosity makes bricks more insulating and resistant to thermal shock, but it also lowers strength and permits easier penetration by slag, molten metal, and gases. Therefore all three listed effects occur.
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