Refractory Technology Silica refractories Crack when subjected to sudden change of temperature Have lower thermal conductivity than fireclay bricks Can not be used in the dome of hot blast stoves All of these Crack when subjected to sudden change of temperature Have lower thermal conductivity than fireclay bricks Can not be used in the dome of hot blast stoves All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Ramming masses are used for Neither A nor B Both A & B Obtaining monolithic working faces Repairing construction of various furnace parts Neither A nor B Both A & B Obtaining monolithic working faces Repairing construction of various furnace parts ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories have low resistance to Disintegration on sudden change of temperature Both B and C Attack by basic slag Abrasion Disintegration on sudden change of temperature Both B and C Attack by basic slag Abrasion ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Firing temperature of magnesite bricks is about __________ °C. 800-1000 1600-1800 2400-2600 1000-1200 800-1000 1600-1800 2400-2600 1000-1200 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to Slag attack Fusion under load CO attack Thermal spalling Slag attack Fusion under load CO attack Thermal spalling ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Semi-silica bricks compared to silica bricks have Neither A nor B Better spalling resistance Less fusion point Both A & B Neither A nor B Better spalling resistance Less fusion point Both A & B ANSWER DOWNLOAD EXAMIANS APP
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