Refractory Technology Zircon refractories have Low co-efficient of expansion All of these High RUL (1600°C) and refractoriness (> 2000°C) High spalling resistance Low co-efficient of expansion All of these High RUL (1600°C) and refractoriness (> 2000°C) High spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Addition of zircon to silica refractory brick improves its Resistance to slag attack Neither A nor B Neither A nor B Crushing strength Resistance to slag attack Neither A nor B Neither A nor B Crushing strength ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High density refractory bricks have lower Thermal conductivity Slag penetration resistance Spalling resistance Fusion point Thermal conductivity Slag penetration resistance Spalling resistance Fusion point ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which property of refractories is the most important for top section of the blast furnace? Resistance to slag peneration Resistance to abrasion Resistance to corrosion by slag Stability of volume at high temperature Resistance to slag peneration Resistance to abrasion Resistance to corrosion by slag Stability of volume at high temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chromite refractories are used in Both A & B Neither A nor B Bottom of soaking pits Between acid & basic linings in basic open hearth furnaces to prevent their chemical action with each other Both A & B Neither A nor B Bottom of soaking pits Between acid & basic linings in basic open hearth furnaces to prevent their chemical action with each other ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ bricks should not be used in oxidising atmosphere. Fireclay Silica Carbon Tar dolomite Fireclay Silica Carbon Tar dolomite ANSWER DOWNLOAD EXAMIANS APP
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