__________ of carbon blocks in the hearth of blast furnace helps in avoiding skull formation, when it becomes cold.
A. High thermal conductivity
B. Low porosity
C. Non-wetting characteristics
D. High density
Answer: Option C
This Question Belongs to Chemical Engineering >> Refractory Technology
Related Questions on Refractory Technology
Fusion point of an acidic refractory material is
A. Increased by the addition of basic oxides
B. Reduced by the addition of basic oxides
C. Not affected by the addition of basic oxides
D. Not affected by the addition of basic oxides
Which of the following is not a high alumina refractory material?
A. Kyanite
B. Sillimanite
C. Diaspore
D. Periclase
Magnesite refractories are generally not used in the
A. Electric furnace walls
B. Steel melting furnace
C. Open hearth furnace
D. Burning zone of cement kilns
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