Refractory Technology High alumina refractories are used in the All of these Glass melting furnaces Dome of blast furnace stoves Electric arc furnace roof All of these Glass melting furnaces Dome of blast furnace stoves Electric arc furnace roof ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which brick undergoes maximum shrinkage on drying? Magnesite bricks Chromite bricks Fireclay bricks Tar bonded dolomite bricks Magnesite bricks Chromite bricks Fireclay bricks Tar bonded dolomite bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology SiO₂ percentage in firebrick is about 55-60 35-40 80-85 >94 55-60 35-40 80-85 >94 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Graphite or carbon refractories Exihibit wetting characteristics Should be used in neutral or reducing atmosphere Are not resistant to corrosion by slag Exhibit high shrinkage on thermal treatment Exihibit wetting characteristics Should be used in neutral or reducing atmosphere Are not resistant to corrosion by slag Exhibit high shrinkage on thermal treatment 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. 2200 2400 2700 1800 2200 2400 2700 1800 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chrome magnesite bricks are Acidic in nature Neutral in nature Having higher RUL than silica bricks Made by mixing 30% chromite and 70% periclase Acidic in nature Neutral in nature Having higher RUL than silica bricks Made by mixing 30% chromite and 70% periclase ANSWER DOWNLOAD EXAMIANS APP
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