Refractory Technology Fireclay refractories have Poor thermal spalling resistance Very high cost Tendency to expand unduly high during firing Low co-efficient of thermal expansion Poor thermal spalling resistance Very high cost Tendency to expand unduly high during firing Low co-efficient of thermal expansion ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High thermal conductivity of a refractory material is not important, when it is to be used in the Recuperators Muffle furnace Coke oven regenarators Blast furnace Recuperators Muffle furnace Coke oven regenarators Blast furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory materials are never used in the construction of Pressure vessels Ovens & retorts Segar cones Orton cones Pressure vessels Ovens & retorts Segar cones Orton cones ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica bricks are never used for lining the Roof of open hearth furnace Dome of blast furnace stoves By-product coke ovens Beehive coke ovens Roof of open hearth furnace Dome of blast furnace stoves By-product coke ovens Beehive coke ovens ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With decrease in porosity, the __________ of the refractories decreases. Spalling resistance Thermal conductivity Strength None of these Spalling resistance Thermal conductivity Strength None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chrome magnesite is not used in the All of these Inner lining of L.D. converter Aluminium melting furnaces Wear out lining of steel melting furnaces All of these Inner lining of L.D. converter Aluminium melting furnaces Wear out lining of steel melting furnaces ANSWER DOWNLOAD EXAMIANS APP
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