Refractory Technology Permeability of bricks is a measure of the Expansion during heating Melting point Rate at which a fluid will pass through the pores Refractoriness Expansion during heating Melting point Rate at which a fluid will pass through the pores Refractoriness ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Graphite or carbon refractories Exhibit high shrinkage on thermal treatment Are not resistant to corrosion by slag Exihibit wetting characteristics Should be used in neutral or reducing atmosphere Exhibit high shrinkage on thermal treatment Are not resistant to corrosion by slag Exihibit wetting characteristics Should be used in neutral or reducing atmosphere ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which property of refractories is the most important for top section of the blast furnace? Stability of volume at high temperature Resistance to abrasion Resistance to corrosion by slag Resistance to slag peneration Stability of volume at high temperature Resistance to abrasion Resistance to corrosion by slag Resistance to slag peneration ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling resistance of a refractory can not be increased by 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 Making it denser Decreasing its thermal co-efficient of expansion ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness under loads (RUL) is quite close to the fusion temperature (PCE) for __________ bricks. Silica Dolomite Fireclay Very low alumina Silica Dolomite Fireclay Very low alumina ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory materials are never used in the construction of Segar cones Pressure vessels Ovens & retorts Orton cones Segar cones Pressure vessels Ovens & retorts Orton cones ANSWER DOWNLOAD EXAMIANS APP
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