Refractory Technology Silica bricks are never used for lining the Dome of blast furnace stoves By-product coke ovens Beehive coke ovens Roof of open hearth furnace Dome of blast furnace stoves By-product coke ovens Beehive coke ovens Roof of open hearth furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology silicon carbide refractories have very low Resistance to thermal shock Thermal conductivity Refractoriness (< 1700°C) None of these Resistance to thermal shock Thermal conductivity Refractoriness (< 1700°C) None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Resistance to slag attack of a refractory All of these Decreases, if defective joints & cracks exist in the refractory Depends on the nature of slag & refractory Decreases at higher temperature All of these Decreases, if defective joints & cracks exist in the refractory Depends on the nature of slag & refractory Decreases at higher temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the stable form of silica between 1470°C and the melting point 1713°C ? Cristobalite Quartz Tridymite None of these Cristobalite Quartz Tridymite None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology 'Spinel', a refractory mineral is chemically represented as MgAl2O₃ MgSO₄ MgAl2O₄ MgAl2O₃.2H₂O MgAl2O₃ MgSO₄ MgAl2O₄ MgAl2O₃.2H₂O ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spray test determines the __________ of refractories. Resistance to slag penetration Resistance to CO attack Permanent linear change RUL Resistance to slag penetration Resistance to CO attack Permanent linear change RUL ANSWER DOWNLOAD EXAMIANS APP
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