Refractory Technology Machine moulding of dry mixture of refractories requires a pressure of the order of __________ kg/cm². 500 1000 10 100 500 1000 10 100 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With decrease in porosity, the __________ of the refractories decreases. None of these Thermal conductivity Strength Spalling resistance None of these Thermal conductivity Strength Spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Graphite or carbon refractories Should be used in neutral or reducing atmosphere Are not resistant to corrosion by slag Exihibit wetting characteristics Exhibit high shrinkage on thermal treatment Should be used in neutral or reducing atmosphere Are not resistant to corrosion by slag Exihibit wetting characteristics Exhibit high shrinkage on thermal treatment ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chromite refractories are Fired at a temperature of 600°C only Acidic refractory Basic refractory Neutral refractory Fired at a temperature of 600°C only Acidic refractory Basic refractory Neutral refractory ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Resistance to slag attack of a refractory All of these Depends on the nature of slag & refractory Decreases, if defective joints & cracks exist in the refractory Decreases at higher temperature All of these Depends on the nature of slag & refractory Decreases, if defective joints & cracks exist in the refractory Decreases at higher temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chrome magnesite brick is not used for lining the Bottom hearth of reheating furnace Burning zone of limestone rotary kilns Hearth of soaking pits Coke oven regenerator Bottom hearth of reheating furnace Burning zone of limestone rotary kilns Hearth of soaking pits Coke oven regenerator ANSWER DOWNLOAD EXAMIANS APP
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