Refractory Technology Which one contains minimum percentage of SiO₂? Sillimanite Firebrick Semi-silica Aluminous firebrick Sillimanite Firebrick Semi-silica Aluminous firebrick ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion temperature of pure silica (SiO₂) is __________ °C. 1350 2570 1715 2800 1350 2570 1715 2800 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rotary kilns meant for calcination of limestone are lined with chrome magnesite in __________ zone. Cooling Preheating Burning All of these Cooling Preheating Burning All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is a basic refractory? Silica Chrome magnesite Fireclay None of these Silica Chrome magnesite Fireclay None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite bricks are used in those parts of furnaces, which are None of these Subjected to temperature fluctuation Subjected to high load Required to resist corrosive basic slag None of these Subjected to temperature fluctuation Subjected to high load Required to resist corrosive basic slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High density refractory bricks have lower Thermal conductivity Fusion point Spalling resistance Slag penetration resistance Thermal conductivity Fusion point Spalling resistance Slag penetration resistance ANSWER DOWNLOAD EXAMIANS APP
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