Refractory Technology
Which of the following bricks should not be used, if the furnace is to be used intermit-tantly?

Sillimanite
Silica bricks
Firebricks
Silicon carbide bricks

ANSWER DOWNLOAD EXAMIANS APP

Refractory Technology
Thermal conductivity of refractory bricks

Decreases with decreases in porosity
Increases with decrease in porosity
Increases with the amount of air entrapped in pores
Is independent of its porosity and is maximum for insulating bricks

ANSWER DOWNLOAD EXAMIANS APP