Refractory Technology Hot face insulating linings of high purity alumina fused mullite are used, where Presence of iron or silica is harmful Very high temperatures are involved All of these Highly reducing conditions are involved Presence of iron or silica is harmful Very high temperatures are involved All of these Highly reducing conditions are involved ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which furnace consumes maximum refractory annually in an integrated steel plant? Coke ovens Blastfurnace L.D. converter Soaking pit Coke ovens Blastfurnace L.D. converter Soaking pit ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Zirconia refractories are not used in Making sheaths for thermocouple Lining high temperature ceramic kilns High frequency induction furnaces in the form of inductors Furnaces subjected to fluctuating temperature Making sheaths for thermocouple Lining high temperature ceramic kilns High frequency induction furnaces in the form of inductors Furnaces subjected to fluctuating temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Alumina-graphite bricks are used for lining the Continuous casting systems Neither A nor B Both A & B Slide gate in teeming laddies Continuous casting systems Neither A nor B Both A & B Slide gate in teeming laddies ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal conductivity of refractory bricks Increases with the amount of air entrapped in pores Decreases with decreases in porosity Is independent of its porosity and is maximum for insulating bricks Increases with decrease in porosity Increases with the amount of air entrapped in pores Decreases with decreases in porosity Is independent of its porosity and is maximum for insulating bricks Increases with decrease in porosity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture? Saw dust Chemically prepared foam Sand Cork Saw dust Chemically prepared foam Sand Cork ANSWER DOWNLOAD EXAMIANS APP
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