Refractory Technology Which of the following does not occur during firing/burning of refractories? Removal of water of hydration Development of stable mineral form Decrease in crushing strength Vitrification Removal of water of hydration Development of stable mineral form Decrease in crushing strength Vitrification ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rate of slag attack on refractories increases with rise in temperature due to the Increased thermal conductivity of brick Oxidising condition in the furnace Decreased viscosity of slag None of these Increased thermal conductivity of brick Oxidising condition in the furnace Decreased viscosity of slag None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ of carbon blocks in the hearth of blast furnace helps in avoiding skull formation, when it becomes cold. High thermal conductivity Non-wetting characteristics High density Low porosity High thermal conductivity Non-wetting characteristics High density Low porosity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Bottom of basic open hearth furnace are constructed of Dead burnt magnesite ramming mass Semi-silica bricks Silicon carbide bricks Porous fireclay bricks Dead burnt magnesite ramming mass Semi-silica bricks Silicon carbide bricks Porous fireclay bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High refractorinness of refractory bricks means, that it has a High resistance to fusion High spalling resistance Low spalling resistance Low porosity High resistance to fusion High spalling resistance Low spalling resistance Low porosity ANSWER DOWNLOAD EXAMIANS APP
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