High porosity refractory bricks have _______________?
Correct answer: B. All A., B. and C.
- A. Poor resistance to the penetration of molten slag, metal & flue gases
- B. All A., B. and C.
- C. Better thermal spalling resistance
- D. Poor heat conductivity & low strength
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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