Refractory Technology Which of the following impurities reduces the refractoriness of magnesite bricks? SiO₂ CaO Al2O₃ All of these SiO₂ CaO Al2O₃ All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Semi-silica bricks compared to silica bricks have Less fusion point Both A & B Neither A nor B Better spalling resistance Less fusion point Both A & B Neither A nor B Better spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Electrical resistor bars are made of Graphite Alumina Silicon carbide Zirconia Graphite Alumina Silicon carbide Zirconia ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rotary kilns meant for calcination of limestone are lined with chrome magnesite in __________ zone. All of these Cooling Burning Preheating All of these Cooling Burning Preheating ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Si percentage in silica refractories used in the walls of coke oven is about 80 95 45 60 80 95 45 60 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Alumina-graphite bricks are used for lining the Slide gate in teeming laddies Continuous casting systems Neither A nor B Both A & B Slide gate in teeming laddies Continuous casting systems Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
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