Refractory Technology In panel test for spalling resistance, the average face temperature of panel assembly is maintained at __________ °C for 24 hours. 700 1600 1000 2000 700 1600 1000 2000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is a basic refractory? Chrome magnesite Fireclay Silica None of these Chrome magnesite Fireclay Silica None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay refractories have Low co-efficient of thermal expansion Very high cost Poor thermal spalling resistance Tendency to expand unduly high during firing Low co-efficient of thermal expansion Very high cost Poor thermal spalling resistance Tendency to expand unduly high during firing ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Addition of grog in fireclay brick during its manufacture is advantageous, because it results in Less shrinkage in heating, decreased apparent porosity & increased specific gravity High strength & thermal spalling resistance Less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production All of these Less shrinkage in heating, decreased apparent porosity & increased specific gravity High strength & thermal spalling resistance Less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content in firebricks, its fusion point (refractoriness) Remains unchanged Decreases Increases Decreases linearly Remains unchanged Decreases Increases Decreases linearly ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology RUL of refractories depends on the All of these Physical structure Presence of impurities like iron & alkali Chemical composition All of these Physical structure Presence of impurities like iron & alkali Chemical composition ANSWER DOWNLOAD EXAMIANS APP
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