Refractory Technology Silica refractories All of these Crack when subjected to sudden change of temperature Can not be used in the dome of hot blast stoves Have lower thermal conductivity than fireclay bricks All of these Crack when subjected to sudden change of temperature Can not be used in the dome of hot blast stoves Have lower thermal conductivity than fireclay bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum safe working temperature for fireclay bricks is about __________ °C. 1550 1300 1150 1450 1550 1300 1150 1450 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology silicon carbide refractories have very low Refractoriness (< 1700°C) Resistance to thermal shock None of these Thermal conductivity Refractoriness (< 1700°C) Resistance to thermal shock None of these Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to CO attack Thermal spalling Fusion under load Slag attack CO attack Thermal spalling Fusion under load Slag attack ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one expands on heating? Neither A nor B Silica bricks Fireclay bricks Both A & B Neither A nor B Silica bricks Fireclay bricks Both A & B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica bricks are never used for lining the Roof of open hearth furnace Dome of blast furnace stoves By-product coke ovens Beehive coke ovens Roof of open hearth furnace Dome of blast furnace stoves By-product coke ovens Beehive coke ovens ANSWER DOWNLOAD EXAMIANS APP
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