Refractory Technology Refractoriness under load (RUL) of fireclay bricks (under a load of 2 kg/cm² ) is __________ °C. >1350 1000 500 >2000 >1350 1000 500 >2000 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 Silica bricks Sillimanite Firebricks Silicon carbide bricks Silica bricks Sillimanite Firebricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Bottom of basic open hearth furnace are constructed of Porous fireclay bricks Silicon carbide bricks Dead burnt magnesite ramming mass Semi-silica bricks Porous fireclay bricks Silicon carbide bricks Dead burnt magnesite ramming mass Semi-silica bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Crushing strength of a refractory Increases with rise in service temperature Decreases with increase in porosity Is unaffected with change in service temperature Decreases with rise in service temperature Increases with rise in service temperature Decreases with increase in porosity Is unaffected with change in service temperature Decreases with rise in service temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks is not used for lining the Cupola Roof of open hearth furnace Gas producer Bottom of hot metal mixer Cupola Roof of open hearth furnace Gas producer Bottom of hot metal mixer ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spray test determines the __________ of refractories. Permanent linear change Resistance to slag penetration RUL Resistance to CO attack Permanent linear change Resistance to slag penetration RUL Resistance to CO attack ANSWER DOWNLOAD EXAMIANS APP