Refractory Technology Refractoriness under load (RUL) is the most important property for the refractory bricks Used for furnace insulation None of these Used in the roof of the furnace At the hearth bottom of the furnace on which stock is placed Used for furnace insulation None of these Used in the roof of the furnace At the hearth bottom of the furnace on which stock is placed ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following impurities reduces the refractoriness of magnesite bricks? SiO₂ Al2O₃ CaO All of these SiO₂ Al2O₃ CaO All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling of a refractory means its Softening Resistance to chemical action of gases and molten fluxes Resistancce to compressive loads Fracture due to uneven expansion at high temperature Softening Resistance to chemical action of gases and molten fluxes Resistancce to compressive loads Fracture due to uneven expansion at high temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion temperature of pure silica (SiO₂) is __________ °C. 2800 1715 2570 1350 2800 1715 2570 1350 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology An ideal refractory should have high Shrinkage ability None of these Spalling rate Fusion point Shrinkage ability None of these Spalling rate Fusion point ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is a neutral refractory? Silica Graphite Magnesia Magnesite chrome Silica Graphite Magnesia Magnesite chrome ANSWER DOWNLOAD EXAMIANS APP
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