Refractory Technology Maximum alumina content in high alumina refractory can be as high as __________ percent. 50 70 30 90 50 70 30 90 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Roof of a basic open hearth furnace is lined with __________ bricks. Dolomite Fireclay Magnesite Silica Dolomite Fireclay Magnesite Silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The largest consumer of refractories is the __________ industry. Cement Power Metallurgical Fertiliser Cement Power Metallurgical Fertiliser ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon refractories Do not burn/oxidise, when exposed to air on heating Are not attacked by slags, as they are not wetted by melts Have extremely low thermal & electrical conductivities Do not resist temperature fluctuations Do not burn/oxidise, when exposed to air on heating Are not attacked by slags, as they are not wetted by melts Have extremely low thermal & electrical conductivities Do not resist temperature fluctuations ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal diffusivity of a refractory brick is high, when its __________ is high. Density Specific heat None of these Thermal conductivity Density Specific heat None of these Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rotary kilns meant for calcination of limestone are lined with chrome magnesite in __________ zone. Burning All of these Cooling Preheating Burning All of these Cooling Preheating ANSWER DOWNLOAD EXAMIANS APP
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