Refractory Technology Carborundum used for making crucibles for melting non-ferrous metals is chemically Silicon nitride Crystalline magnesia Zirconium sulphate Silicon carbide Silicon nitride Crystalline magnesia Zirconium sulphate Silicon carbide ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity of silica bricks varies from __________ percent. 5 to 10 60 to 75 20 to 30 45 to 60 5 to 10 60 to 75 20 to 30 45 to 60 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chrome magnesite bricks are Neutral in nature Having higher RUL than silica bricks Made by mixing 30% chromite and 70% periclase Acidic in nature Neutral in nature Having higher RUL than silica bricks Made by mixing 30% chromite and 70% periclase Acidic in nature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High refractorinness of refractory bricks means, that it has a Low porosity High resistance to fusion High spalling resistance Low spalling resistance Low porosity High resistance to fusion High spalling resistance Low spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Pyrometric cone equivalent (PCE) of a refractory is the measure of its Fusion point Spalling resistance Resistance to carbon monoxide attack Resistance to slag penetration Fusion point Spalling resistance Resistance to carbon monoxide attack Resistance to slag penetration ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Alumina-graphite bricks are used for lining the Neither A nor B Continuous casting systems Both A & B Slide gate in teeming laddies Neither A nor B Continuous casting systems Both A & B Slide gate in teeming laddies ANSWER DOWNLOAD EXAMIANS APP
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