Refractory Technology Which of the following does not occur during firing/burning of refractories? Development of stable mineral form Removal of water of hydration Vitrification Decrease in crushing strength Development of stable mineral form Removal of water of hydration Vitrification Decrease in crushing strength ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology 'Super refractories' are made from pure Nitrides Oxides Borides Carbides Nitrides Oxides Borides Carbides ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Electrical resistor bars are made of Silicon carbide Zirconia Alumina Graphite Silicon carbide Zirconia Alumina Graphite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rotary kilns meant for calcination of limestone are lined with chrome magnesite in __________ zone. Preheating Cooling Burning All of these Preheating Cooling Burning All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ of carbon blocks in the hearth of blast furnace helps in avoiding skull formation, when it becomes cold. High density Non-wetting characteristics Low porosity High thermal conductivity High density Non-wetting characteristics Low porosity High thermal conductivity 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? Chemically prepared foam Cork Sand Saw dust Chemically prepared foam Cork Sand Saw dust ANSWER DOWNLOAD EXAMIANS APP
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