Refractory Technology Zirconia refractory Does not react with basic slags Has poor electrical conductivity at high temperature Can not be used as an insulator Is produced from baddeleyite Does not react with basic slags Has poor electrical conductivity at high temperature Can not be used as an insulator Is produced from baddeleyite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High porosity refractory bricks have All of these Poor resistance to the peneration of molten slag, metal & flue gases Poor heat conductivity & low strength Better thermal spalling resistance All of these Poor resistance to the peneration of molten slag, metal & flue gases Poor heat conductivity & low strength Better thermal spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ bricks are used in the burning zone of a cement rotary kiln. Silicon carbide Fireclay High alumina Thoria Silicon carbide Fireclay High alumina Thoria ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Machine moulding of dry mixture of refractories requires a pressure of the order of __________ kg/cm². 10 500 100 1000 10 500 100 1000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one contains maximum percentage of Al2O₃ ? Magnesite Aluminous firebrick Firebrick Sillimanite Magnesite Aluminous firebrick Firebrick Sillimanite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling tendency of refractories is reduced by increasing its Thermal conductivity Specific gravity Strength Porosity Thermal conductivity Specific gravity Strength Porosity ANSWER DOWNLOAD EXAMIANS APP
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