Refractory Technology Maximum safe working temperature for fireclay bricks is about __________ °C. 1450 1150 1550 1300 1450 1150 1550 1300 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology RUL of refractories depends on the Presence of impurities like iron & alkali Chemical composition All of these Physical structure Presence of impurities like iron & alkali Chemical composition All of these Physical structure 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 None of these Decreased viscosity of slag Increased thermal conductivity of brick Oxidising condition in the furnace None of these Decreased viscosity of slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Zircon refractories have High spalling resistance All of these High RUL (1600°C) and refractoriness (> 2000°C) Low co-efficient of expansion High spalling resistance All of these High RUL (1600°C) and refractoriness (> 2000°C) Low co-efficient of expansion ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following is not a neutral refractory? Magnesite Silicon carbide Graphite Chromite Magnesite Silicon carbide Graphite Chromite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hot metal runner in blast furnace are lined with __________ bricks. Silica Magnesite Fireclay Carborundum Silica Magnesite Fireclay Carborundum ANSWER DOWNLOAD EXAMIANS APP
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