Refractory Technology Resistance to slag attack of a refractory All of these Decreases at higher temperature Depends on the nature of slag & refractory Decreases, if defective joints & cracks exist in the refractory All of these Decreases at higher temperature Depends on the nature of slag & refractory Decreases, if defective joints & cracks exist in the refractory ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories have low resistance to Both B and C Attack by basic slag Abrasion Disintegration on sudden change of temperature Both B and C Attack by basic slag Abrasion Disintegration on sudden change of temperature 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. Fireclay Corundum Magnesite Silica Fireclay Corundum Magnesite Silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness under loads (RUL) is quite close to the fusion temperature (PCE) for __________ bricks. Silica Very low alumina Fireclay Dolomite Silica Very low alumina Fireclay Dolomite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chemically, mullite refractories is ThO₂ ZrSO₄ 3Al2O₃.2SiO₂ Al2O₃ ThO₂ ZrSO₄ 3Al2O₃.2SiO₂ Al2O₃ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Machine moulding of dry mixture of refractories requires a pressure of the order of __________ kg/cm². 1000 500 10 100 1000 500 10 100 ANSWER DOWNLOAD EXAMIANS APP
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