Refractory Technology Dolomite bricks have good resistance to attack by Molten steel Lime slag Iron oxide None of these Molten steel Lime slag Iron oxide None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Addition of grog in fireclay brick during its manufacture is advantageous, because it results in All of these Less shrinkage in heating, decreased apparent porosity & increased specific gravity Less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production High strength & thermal spalling resistance All of these Less shrinkage in heating, decreased apparent porosity & increased specific gravity Less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production High strength & thermal spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to Fusion under load Slag attack CO attack Thermal spalling Fusion under load Slag attack CO attack Thermal spalling ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chromite refractories are used in Both A & B Between acid & basic linings in basic open hearth furnaces to prevent their chemical action with each other Bottom of soaking pits Neither A nor B Both A & B Between acid & basic linings in basic open hearth furnaces to prevent their chemical action with each other Bottom of soaking pits Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High alumina refractory compared to fireclay bricks have Less resistance to slag attack Less load bearing capacity High resistance to thermal shock and creep Low refractoriness Less resistance to slag attack Less load bearing capacity High resistance to thermal shock and creep Low refractoriness ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon refractory blocks Are acidic in nature Are wetted by molten iron All of these Are used in the hearth of blast furnace Are acidic in nature Are wetted by molten iron All of these Are used in the hearth of blast furnace ANSWER DOWNLOAD EXAMIANS APP
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