Refractory Technology Vacuum steel degassing units are lined with Low duty firebricks Silica bricks Graphite blocks High alumina bricks Low duty firebricks Silica bricks Graphite blocks High alumina bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon bricks are not used in the lining of the Blast furnace hearth Combustion chamber of blast furnace stoves Highly chemical resistant equipments Electric furnaces Blast furnace hearth Combustion chamber of blast furnace stoves Highly chemical resistant equipments Electric furnaces ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one contains maximum percentage of Al2O₃ ? Magnesite Sillimanite Firebrick Aluminous firebrick Magnesite Sillimanite Firebrick Aluminous firebrick ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion temperature of pure silica (SiO₂) is __________ °C. 2800 1715 2570 1350 2800 1715 2570 1350 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories have low resistance to Attack by basic slag Disintegration on sudden change of temperature Abrasion Both B and C Attack by basic slag Disintegration on sudden change of temperature Abrasion Both B and C ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica refractories Can not be used in the dome of hot blast stoves Have lower thermal conductivity than fireclay bricks All of these Crack when subjected to sudden change of temperature Can not be used in the dome of hot blast stoves Have lower thermal conductivity than fireclay bricks All of these Crack when subjected to sudden change of temperature ANSWER DOWNLOAD EXAMIANS APP
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