Refractory Technology Cermets are combination of ceramic and metallic materials due to which they have high strength & resistance to high temperature. Cermets are used in the Nuclear reactors, missiles & space crafts Hearth of the blast furnace Roof of electric furnaces Insulation of high temperature furnaces Nuclear reactors, missiles & space crafts Hearth of the blast furnace Roof of electric furnaces Insulation of high temperature furnaces ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The largest consumer of refractories is the __________ industry. Fertiliser Cement Power Metallurgical Fertiliser Cement Power Metallurgical ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories are used for the construction of those furnaces, which are Not required to resist the corrosive action of basic slag Both (b) and © Not subjected to fluctuation in temperature Used for raising & maintaining high temperature Not required to resist the corrosive action of basic slag Both (b) and © Not subjected to fluctuation in temperature Used for raising & maintaining high temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Ceramic recuperators used for waste heat recovery from high temperature flue gas going out of the furnace is made of Silicon carbide Corrundum Fireclay Siliceous fireclay Silicon carbide Corrundum Fireclay Siliceous fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Zirconia refractory Is produced from baddeleyite Has poor electrical conductivity at high temperature Does not react with basic slags Can not be used as an insulator Is produced from baddeleyite Has poor electrical conductivity at high temperature Does not react with basic slags Can not be used as an insulator ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon refractories Are not attacked by slags, as they are not wetted by melts Do not burn/oxidise, when exposed to air on heating Have extremely low thermal & electrical conductivities Do not resist temperature fluctuations Are not attacked by slags, as they are not wetted by melts Do not burn/oxidise, when exposed to air on heating Have extremely low thermal & electrical conductivities Do not resist temperature fluctuations ANSWER DOWNLOAD EXAMIANS APP
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