Refractory Technology Refractoriness under loads (RUL) is quite close to the fusion temperature (PCE) for __________ bricks. Very low alumina Fireclay Dolomite Silica Very low alumina Fireclay Dolomite Silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling of a refractory means its Resistancce to compressive loads Resistance to chemical action of gases and molten fluxes Fracture due to uneven expansion at high temperature Softening Resistancce to compressive loads Resistance to chemical action of gases and molten fluxes Fracture due to uneven expansion at high temperature Softening ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Lower wall courses of soaking pits are made of __________ bricks to avoid the action of molten slag & scale. Lowduty fireclay Silica Chrome or magnesite Silicon carbide Lowduty fireclay Silica Chrome or magnesite Silicon carbide ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal spalling mainly occurs during __________ of furnaces. Warming up Both A & B Cooling down Neither A nor B Warming up Both A & B Cooling down Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Grog Is a non-plastic material Iscrushed firebrick All of these Contains both alumina and silica Is a non-plastic material Iscrushed firebrick All of these Contains both alumina and silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Resistance to slag attack of a refractory 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 All of these Decreases at higher temperature ANSWER DOWNLOAD EXAMIANS APP
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