Refractory Technology Fireclay refractories have Poor thermal spalling resistance Low co-efficient of thermal expansion Tendency to expand unduly high during firing Very high cost Poor thermal spalling resistance Low co-efficient of thermal expansion Tendency to expand unduly high during firing Very high cost ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Firing of refractory brick is done to Dehydrate the dried refractory Form ceramic bonds necessary for development of high crushing strength in the finished product Develop stable mineral forms in them All of these Dehydrate the dried refractory Form ceramic bonds necessary for development of high crushing strength in the finished product Develop stable mineral forms in them All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is required in an insulating refractory? Neither A nor B Both A & B High thermal conductivity Low porosity Neither A nor B Both A & B High thermal conductivity Low porosity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is a neutral refractory? Magnesia Magnesite chrome Graphite Silica Magnesia Magnesite chrome Graphite Silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Mullite is chemically represented by 2Al2O₃ . 3SiO₂ Al2O₃ . 2SiO₂ 3Al2O₃ . 2SiO₂ Al2O₃ . SiO₂ 2Al2O₃ . 3SiO₂ Al2O₃ . 2SiO₂ 3Al2O₃ . 2SiO₂ Al2O₃ . SiO₂ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Firing temperature of magnesite bricks is about __________ °C. 2400-2600 1600-1800 800-1000 1000-1200 2400-2600 1600-1800 800-1000 1000-1200 ANSWER DOWNLOAD EXAMIANS APP
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