Refractory Technology Which property of refractories is the most important for top section of the blast furnace? Resistance to corrosion by slag Resistance to slag peneration Stability of volume at high temperature Resistance to abrasion Resistance to corrosion by slag Resistance to slag peneration Stability of volume at high temperature Resistance to abrasion ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology What is Thoria? Thoria Has high fusion temperature (> 3000°C) but poor resistance to thermal shock Thoria Has high resistance to basic slags Which is expensive & radioactive, is used in crucibles for melting high purity metals All of these Thoria Has high fusion temperature (> 3000°C) but poor resistance to thermal shock Thoria Has high resistance to basic slags Which is expensive & radioactive, is used in crucibles for melting high purity metals All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology A steel member used in the furnace construction to take the thrust of the brickwork is called Baffle Buckstay Breast wall Armouring Baffle Buckstay Breast wall Armouring ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following bricks should not be used, if the furnace is to be used intermit-tantly? Silicon carbide bricks Firebricks Sillimanite Silica bricks Silicon carbide bricks Firebricks Sillimanite Silica bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which brick undergoes maximum shrinkage on drying? Magnesite bricks Fireclay bricks Tar bonded dolomite bricks Chromite bricks Magnesite bricks Fireclay bricks Tar bonded dolomite bricks Chromite bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal spalling mainly occurs during __________ of furnaces. Cooling down Warming up Neither A nor B Both A & B Cooling down Warming up Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
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