Refractory Technology Fireclay refractories Shrink during firing All of these Combine with salts (e.g. chlorides sulphates etc.) & bases (e.g. lime, magnesia etc.) forming fusible aluminates silicates etc Are not resistant to the action of basic slags Shrink during firing All of these Combine with salts (e.g. chlorides sulphates etc.) & bases (e.g. lime, magnesia etc.) forming fusible aluminates silicates etc Are not resistant to the action of basic slags ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory bricks having lower porosity have Low heat capacity Low thermal conductivity High insulating properties Greater strength Low heat capacity Low thermal conductivity High insulating properties Greater strength ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Panel test determines the __________ of refractories. Spalling resistance Refractoriness under load (RUL) Fusion point Slag penetration resistance Spalling resistance Refractoriness under load (RUL) Fusion point Slag penetration resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology What is Thoria? Which is expensive & radioactive, is used in crucibles for melting high purity metals Thoria Has high resistance to basic slags All of these Thoria Has high fusion temperature (> 3000°C) but poor resistance to thermal shock Which is expensive & radioactive, is used in crucibles for melting high purity metals Thoria Has high resistance to basic slags All of these Thoria Has high fusion temperature (> 3000°C) but poor resistance to thermal shock ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Zircon refractories have High spalling resistance All of these Low co-efficient of expansion High RUL (1600°C) and refractoriness (> 2000°C) High spalling resistance All of these Low co-efficient of expansion High RUL (1600°C) and refractoriness (> 2000°C) ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which furnace consumes maximum refractory annually in an integrated steel plant? L.D. converter Soaking pit Blastfurnace Coke ovens L.D. converter Soaking pit Blastfurnace Coke ovens ANSWER DOWNLOAD EXAMIANS APP
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