Refractory Technology Which property of refractories is the most important for top section of the blast furnace? Resistance to slag peneration Resistance to corrosion by slag Stability of volume at high temperature Resistance to abrasion Resistance to slag peneration Resistance to corrosion by slag Stability of volume at high temperature Resistance to abrasion ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories used in/for __________ should have low thermal conductivity. Insulation Regenerators Muffle furnaces Coke ovens Insulation Regenerators Muffle furnaces Coke ovens ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is a neutral refractory? Magnesia Magnesite chrome Silica Graphite Magnesia Magnesite chrome Silica Graphite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology 10 to 30% magnesite is added to chromite to produce chrome-magnesite refractories. Magnesite addition is mainly done to improve the __________ of chromite. Spalling resistance Refractoriness Crushing strength Resistance to slag Spalling resistance Refractoriness Crushing strength Resistance to slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories are dried in the None of these Rotary kilns Tunnel kilns Sun None of these Rotary kilns Tunnel kilns Sun ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology What is Thoria? Thoria Has high resistance to basic slags All of these Which is expensive & radioactive, is used in crucibles for melting high purity metals Thoria Has high fusion temperature (> 3000°C) but poor resistance to thermal shock Thoria Has high resistance to basic slags All of these Which is expensive & radioactive, is used in crucibles for melting high purity metals Thoria Has high fusion temperature (> 3000°C) but poor resistance to thermal shock ANSWER DOWNLOAD EXAMIANS APP
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