Refractory Technology Bottom of basic open hearth furnace are constructed of Dead burnt magnesite ramming mass Semi-silica bricks Porous fireclay bricks Silicon carbide bricks Dead burnt magnesite ramming mass Semi-silica bricks Porous fireclay bricks Silicon carbide bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Capacity of a refractory brick to withstand-sudden changes in temperature is denoted by the property called None of these Spalling resistance Refractoriness under load (RUL) Refractoriness None of these Spalling resistance Refractoriness under load (RUL) Refractoriness ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Periclase refractory contains mainly CaO MgO Al2O₃ SiO₂ CaO MgO Al2O₃ SiO₂ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hot face insulating linings of high purity alumina fused mullite are used, where All of these Presence of iron or silica is harmful Highly reducing conditions are involved Very high temperatures are involved All of these Presence of iron or silica is harmful Highly reducing conditions are involved Very high temperatures are involved ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Ramming masses are used for Both A & B Repairing construction of various furnace parts Neither A nor B Obtaining monolithic working faces Both A & B Repairing construction of various furnace parts Neither A nor B Obtaining monolithic working faces ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology What is Thoria? All of these Thoria Has high resistance to basic slags 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 All of these Thoria Has high resistance to basic slags 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 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS