Refractory Technology Thermal spalling mainly occurs during __________ of furnaces. Warming up Both A & B Cooling down Neither A nor B Warming up Both A & B Cooling down Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum apparent porosity of magnesite bricks is about __________ percent. 58 44 24 8 58 44 24 8 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity of silica bricks varies from __________ percent. 5 to 10 45 to 60 20 to 30 60 to 75 5 to 10 45 to 60 20 to 30 60 to 75 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content in firebricks, its fusion point (refractoriness) Decreases linearly Decreases Remains unchanged Increases Decreases linearly Decreases Remains unchanged Increases ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks are never used in the Lead blast furnace Coke oven walls Beehive oven Zinc roaster Lead blast furnace Coke oven walls Beehive oven Zinc roaster ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite bricks are used in those parts of furnaces, which are None of these Subjected to temperature fluctuation Required to resist corrosive basic slag Subjected to high load None of these Subjected to temperature fluctuation Required to resist corrosive basic slag Subjected to high load ANSWER DOWNLOAD EXAMIANS APP
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