Refractory Technology Magnesite refractories have low resistance to Disintegration on sudden change of temperature Both B and C Abrasion Attack by basic slag Disintegration on sudden change of temperature Both B and C Abrasion Attack by basic slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Resistance to slag attack of a refractory All of these Depends on the nature of slag & refractory Decreases, if defective joints & cracks exist in the refractory Decreases at higher temperature All of these Depends on the nature of slag & refractory Decreases, if defective joints & cracks exist in the refractory Decreases at higher temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Segar cones are used for the determination of __________ of refractories. Spalling resistance Softening temperature Resistance to slag attack Electrical conductivity Spalling resistance Softening temperature Resistance to slag attack Electrical conductivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The linear thermal expansion of __________ bricks upto 1000 °C is very low of the order of ≤ 0.5 percent. Magnesite Fireclay Corundum Silica Magnesite Fireclay Corundum Silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica bricks have low spalling resistance below 600°C, due to its Low refractoriness High co-efficient of expansion upto this temperature Very high thermal conductivity High thermal diffusivity Low refractoriness High co-efficient of expansion upto this temperature Very high thermal conductivity High thermal diffusivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Mullite is chemically represented by 2Al2O₃ . 3SiO₂ Al2O₃ . SiO₂ Al2O₃ . 2SiO₂ 3Al2O₃ . 2SiO₂ 2Al2O₃ . 3SiO₂ Al2O₃ . SiO₂ Al2O₃ . 2SiO₂ 3Al2O₃ . 2SiO₂ ANSWER DOWNLOAD EXAMIANS APP
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