Refractory Technology Which one contains minimum percentage of SiO₂? Sillimanite Aluminous firebrick Semi-silica Firebrick Sillimanite Aluminous firebrick Semi-silica Firebrick ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Si percentage in silica refractories used in the walls of coke oven is about 60 80 95 45 60 80 95 45 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Firing temperature of magnesite bricks is about __________ °C. 1600-1800 1000-1200 2400-2600 800-1000 1600-1800 1000-1200 2400-2600 800-1000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High alumina refractories are used in the Electric arc furnace roof Glass melting furnaces Dome of blast furnace stoves All of these Electric arc furnace roof Glass melting furnaces Dome of blast furnace stoves All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite chrome refractories Have very low (50 kg/cm² ) cold crushing strength (C.C.S.), and can not be used in metalcase form Have very low thermal co-efficient of expansion Have better spalling resistance than chrome magnesite refractories Are not at all resistant to the corrosive action of iron oxide Have very low (50 kg/cm² ) cold crushing strength (C.C.S.), and can not be used in metalcase form Have very low thermal co-efficient of expansion Have better spalling resistance than chrome magnesite refractories Are not at all resistant to the corrosive action of iron oxide ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks are used in the All of these Chimney linings Flues Furnaces allowed to cool frequently All of these Chimney linings Flues Furnaces allowed to cool frequently ANSWER DOWNLOAD EXAMIANS APP
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