Refractory Technology Chemically, mullite refractories is 3Al2O₃.2SiO₂ Al2O₃ ZrSO₄ ThO₂ 3Al2O₃.2SiO₂ Al2O₃ ZrSO₄ ThO₂ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Alumina-graphite bricks are used for lining the Slide gate in teeming laddies Neither A nor B Both A & B Continuous casting systems Slide gate in teeming laddies Neither A nor B Both A & B Continuous casting systems ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory bricks having lower porosity have Low heat capacity Greater strength High insulating properties Low thermal conductivity Low heat capacity Greater strength High insulating properties Low thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal spalling mainly occurs during __________ of furnaces. Neither A nor B Both A & B Cooling down Warming up Neither A nor B Both A & B Cooling down Warming up ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology What is Thoria? Thoria Has high fusion temperature (> 3000°C) but poor resistance to thermal shock Thoria Has high resistance to basic slags Which is expensive & radioactive, is used in crucibles for melting high purity metals All of these Thoria Has high fusion temperature (> 3000°C) but poor resistance to thermal shock Thoria Has high resistance to basic slags Which is expensive & radioactive, is used in crucibles for melting high purity metals All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology An ideal refractory should have high Fusion point Spalling rate Shrinkage ability None of these Fusion point Spalling rate Shrinkage ability None of these ANSWER DOWNLOAD EXAMIANS APP
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