Refractory Technology Roof of a basic open hearth furnace is lined with __________ bricks. Magnesite Silica Fireclay Dolomite Magnesite Silica Fireclay Dolomite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion temperature of pure silica (SiO₂) is __________ °C. 1350 1715 2570 2800 1350 1715 2570 2800 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one contains minimum percentage of SiO₂? Aluminous firebrick Firebrick Sillimanite Semi-silica Aluminous firebrick Firebrick Sillimanite Semi-silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Lower part of hot metal mixer are lined with __________ bricks. Silica Superduty fireclay High alumina Carborundum Silica Superduty fireclay High alumina Carborundum ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay refractories have Low co-efficient of thermal expansion Very high cost Tendency to expand unduly high during firing Poor thermal spalling resistance Low co-efficient of thermal expansion Very high cost Tendency to expand unduly high during firing Poor thermal spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not a basic refractory? Magnesite Dolomite Silicon carbide Chrome magnesite Magnesite Dolomite Silicon carbide Chrome magnesite ANSWER DOWNLOAD EXAMIANS APP
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