Refractory Technology Which is not an alumino-silicate refractory? High alumina bricks Mullite bricks Tar dolomite bricks Fireclay bricks High alumina bricks Mullite bricks Tar dolomite bricks Fireclay bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following impurities reduces the refractoriness of magnesite bricks? All of these CaO SiO₂ Al2O₃ All of these CaO SiO₂ Al2O₃ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The maximum linear expansion of silica bricks during firing is about __________ percent. 1 0.5 2 3.5 1 0.5 2 3.5 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chrome magnesite bricks are Acidic in nature Having higher RUL than silica bricks Made by mixing 30% chromite and 70% periclase Neutral in nature Acidic in nature Having higher RUL than silica bricks Made by mixing 30% chromite and 70% periclase Neutral in nature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thoria is an expensive refractory material and is radioactive in nature. Thorium oxide is used in the manufacture of Crucibles used for melting of high purity metals Insulating bricks Muffles for muffle furnaces Segar cones Crucibles used for melting of high purity metals Insulating bricks Muffles for muffle furnaces Segar cones ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion point of an acidic refractory material is Not affected by the addition of basic oxides Reduced by the addition of basic oxides Not affected by the addition of basic oxides Increased by the addition of basic oxides Not affected by the addition of basic oxides Reduced by the addition of basic oxides Not affected by the addition of basic oxides Increased by the addition of basic oxides ANSWER DOWNLOAD EXAMIANS APP