Refractory Technology Sillimanite is a __________ refractory. Basic Neutral Insulating High alumina Basic Neutral Insulating High alumina ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content in firebricks, its fusion point (refractoriness) Decreases Decreases linearly Increases Remains unchanged Decreases Decreases linearly Increases Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High thermal conductivity of a refractory material is not important, when it is to be used in the Muffle furnace Coke oven regenarators Recuperators Blast furnace Muffle furnace Coke oven regenarators Recuperators Blast furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following bricks should not be used, if the furnace is to be used intermit-tantly? Silicon carbide bricks Sillimanite Silica bricks Firebricks Silicon carbide bricks Sillimanite Silica bricks Firebricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one contains maximum percentage of Al2O₃ ? Magnesite Firebrick Sillimanite Aluminous firebrick Magnesite Firebrick Sillimanite Aluminous firebrick ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ of carbon blocks in the hearth of blast furnace helps in avoiding skull formation, when it becomes cold. Low porosity Non-wetting characteristics High density High thermal conductivity Low porosity Non-wetting characteristics High density High thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
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