Refractory Technology Chrome magnesite bricks are Having higher RUL than silica bricks Neutral in nature Acidic in nature Made by mixing 30% chromite and 70% periclase Having higher RUL than silica bricks Neutral in nature Acidic in nature Made by mixing 30% chromite and 70% periclase ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling of silica bricks occurs due to abrupt volume changes, when it is cooled below a temperature of __________ °C. 70 270 570 770 70 270 570 770 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Firing temperature of magnesite bricks is about __________ °C. 1600-1800 800-1000 1000-1200 2400-2600 1600-1800 800-1000 1000-1200 2400-2600 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Insulating refractories should have Low thermal conductivity Neither A nor B Both A & B High porosity Low thermal conductivity Neither A nor B Both A & B High porosity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Because of its very high refractoriness of the order of __________ °C, silicon carbide refractories are used in zinc smelting furnace, muffle furnace and for supporting the wares in tunnel kilns. 1800 2700 2400 2200 1800 2700 2400 2200 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The main raw material for manufacture of silicon carbide refractories is Bauxite Corrundum Carborundum Periclase Bauxite Corrundum Carborundum Periclase ANSWER DOWNLOAD EXAMIANS APP
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