Refractory Technology Si percentage in silica refractories used in the walls of coke oven is about 80 95 45 60 80 95 45 60 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite bricks are used in those parts of furnaces, which are None of these Subjected to high load Subjected to temperature fluctuation Required to resist corrosive basic slag None of these Subjected to high load Subjected to temperature fluctuation Required to resist corrosive basic slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following bricks should not be used, if the furnace is to be used intermit-tantly? Sillimanite Silicon carbide bricks Silica bricks Firebricks Sillimanite Silicon carbide bricks Silica bricks Firebricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks is not used for lining the Gas producer Cupola Roof of open hearth furnace Bottom of hot metal mixer Gas producer Cupola Roof of open hearth furnace Bottom of hot metal mixer ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal conductivity of refractory bricks Is independent of its porosity and is maximum for insulating bricks Decreases with decreases in porosity Increases with decrease in porosity Increases with the amount of air entrapped in pores Is independent of its porosity and is maximum for insulating bricks Decreases with decreases in porosity Increases with decrease in porosity Increases with the amount of air entrapped in pores ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Dolomite bricks have good resistance to attack by Lime slag None of these Iron oxide Molten steel Lime slag None of these Iron oxide Molten steel ANSWER DOWNLOAD EXAMIANS APP
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