Refractory Technology Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as __________ percent. 10 30 20 15 10 30 20 15 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rate of slag attack on refractories increases with rise in temperature due to the Oxidising condition in the furnace None of these Increased thermal conductivity of brick Decreased viscosity of slag Oxidising condition in the furnace None of these Increased thermal conductivity of brick Decreased viscosity of slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which property is important for bricks used in the combustion chamber & dome of blast furnace stoves? All of these High resistance to spalling High refractoriness High strength and density All of these High resistance to spalling High refractoriness High strength and density 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? Sand Saw dust Cork Chemically prepared foam Sand Saw dust Cork Chemically prepared foam ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology In panel test for spalling resistance, the average face temperature of panel assembly is maintained at __________ °C for 24 hours. 2000 1600 700 1000 2000 1600 700 1000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chemically, mullite refractories is ThO₂ 3Al2O₃.2SiO₂ ZrSO₄ Al2O₃ ThO₂ 3Al2O₃.2SiO₂ ZrSO₄ Al2O₃ ANSWER DOWNLOAD EXAMIANS APP
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