Refractory Technology Lower part of hot metal mixer are lined with __________ bricks. High alumina Superduty fireclay Silica Carborundum High alumina Superduty fireclay Silica Carborundum ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cold crushing strength of fireclay bricks is about __________ kgf/cm². 500-1000 200-400 100-150 50-100 500-1000 200-400 100-150 50-100 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Beryllia (which is used in making crucibles for melting uranium & thorium) is superior to alumina in all respects for high temperature (> 1900°C ) use, except Thermal conductivity Cost Electrical conductivity Fusion point Thermal conductivity Cost Electrical conductivity Fusion point ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling resistance of a refractory can not be increased by Making it denser Decreasing its thermal co-efficient of expansion Increasing its porosity Using a coarser grog during its manufacture Making it denser Decreasing its thermal co-efficient of expansion Increasing its porosity Using a coarser grog during its manufacture ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness under load (RUL) of fireclay bricks (under a load of 2 kg/cm² ) is __________ °C. 500 >1350 1000 >2000 500 >1350 1000 >2000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rotary kilns meant for calcination of limestone are lined with chrome magnesite in __________ zone. All of these Burning Preheating Cooling All of these Burning Preheating Cooling ANSWER DOWNLOAD EXAMIANS APP
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