Refractory Technology In panel test for spalling resistance, the average face temperature of panel assembly is maintained at __________ °C for 24 hours. 1600 1000 2000 700 1600 1000 2000 700 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Zircon refractories have Low co-efficient of expansion High spalling resistance High RUL (1600°C) and refractoriness (> 2000°C) All of these Low co-efficient of expansion High spalling resistance High RUL (1600°C) and refractoriness (> 2000°C) All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory bricks having lower porosity have Low heat capacity Low thermal conductivity High insulating properties Greater strength Low heat capacity Low thermal conductivity High insulating properties Greater strength ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following consumes the maximum tonnage of refractories annually in an integrated steel plant? Soaking pits Rotary lime kiln L.D. converter Ceheating furnace Soaking pits Rotary lime kiln L.D. converter Ceheating furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite chrome refractories Have very low (50 kg/cm² ) cold crushing strength (C.C.S.), and can not be used in metalcase form Have better spalling resistance than chrome magnesite refractories Are not at all resistant to the corrosive action of iron oxide Have very low thermal co-efficient of expansion Have very low (50 kg/cm² ) cold crushing strength (C.C.S.), and can not be used in metalcase form Have better spalling resistance than chrome magnesite refractories Are not at all resistant to the corrosive action of iron oxide Have very low thermal co-efficient of expansion ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following bricks should not be used, if the furnace is to be used intermit-tantly? Firebricks Sillimanite Silica bricks Silicon carbide bricks Firebricks Sillimanite Silica bricks Silicon carbide bricks ANSWER DOWNLOAD EXAMIANS APP
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