Refractory Technology Hot blast main (carrying air at 1000°C) in blast furnace are lined with __________ bricks. Magnesite Silica Zirconia Fireclay Magnesite Silica Zirconia Fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon refractories Have extremely low thermal & electrical conductivities Are not attacked by slags, as they are not wetted by melts Do not burn/oxidise, when exposed to air on heating Do not resist temperature fluctuations Have extremely low thermal & electrical conductivities Are not attacked by slags, as they are not wetted by melts Do not burn/oxidise, when exposed to air on heating Do not resist temperature fluctuations ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness of a typical silica brick corresponds to Segar cone number, '32', which is equivalent to a temperature of __________ °C. 1380 1710 1520 1915 1380 1710 1520 1915 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High alumina refractory compared to fireclay bricks have Less resistance to slag attack Less load bearing capacity High resistance to thermal shock and creep Low refractoriness Less resistance to slag attack Less load bearing capacity High resistance to thermal shock and creep Low refractoriness ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Sillimanite is a __________ refractory. High alumina Neutral Basic Insulating High alumina Neutral Basic Insulating ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which form of silica has the highest specific gravity? Quartz Cristobalite Tridymite All of these Quartz Cristobalite Tridymite All of these ANSWER DOWNLOAD EXAMIANS APP
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