Refractory Technology Silica bricks are attacked by basic slags at high temperature. Which of the following is not used solely as a binding material? Plaster of paris Water Aluminium phosphate Lime Plaster of paris Water Aluminium phosphate Lime ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content in firebricks, its fusion point (refractoriness) Decreases Decreases linearly Remains unchanged Increases Decreases Decreases linearly Remains unchanged Increases ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica refractories are not used in Coke oven walls Open hearth furnace roof Dome and upper portion of B.F. stoves Beehive coke ovens Coke oven walls Open hearth furnace roof Dome and upper portion of B.F. stoves Beehive coke ovens ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following bricks should not be used, if the furnace is to be used intermit-tantly? Sillimanite Silica bricks Silicon carbide bricks Firebricks Sillimanite Silica bricks Silicon carbide bricks Firebricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum alumina content in high alumina refractory can be as high as __________ percent. 30 50 70 90 30 50 70 90 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chrome magnesite bricks are 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 Having higher RUL than silica bricks ANSWER DOWNLOAD EXAMIANS APP
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