Refractory Technology Silicon carbide refractories are used in the Muffle furnace Ceramic recuperators Zinc smelting furnace All of these Muffle furnace Ceramic recuperators Zinc smelting furnace All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling of a refractory means its Softening Resistance to chemical action of gases and molten fluxes Fracture due to uneven expansion at high temperature Resistancce to compressive loads Softening Resistance to chemical action of gases and molten fluxes Fracture due to uneven expansion at high temperature Resistancce to compressive loads ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Segar cones are used for the determination of __________ of refractories. Softening temperature Electrical conductivity Spalling resistance Resistance to slag attack Softening temperature Electrical conductivity Spalling resistance Resistance to slag attack ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Firing temperature of magnesite bricks is about __________ °C. 1000-1200 800-1000 2400-2600 1600-1800 1000-1200 800-1000 2400-2600 1600-1800 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Addition of grog in fireclay brick during its manufacture is advantageous, because it results in Less shrinkage in heating, decreased apparent porosity & increased specific gravity All of these High strength & thermal spalling resistance Less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production Less shrinkage in heating, decreased apparent porosity & increased specific gravity All of these High strength & thermal spalling resistance Less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carborundum used for making crucibles for melting non-ferrous metals is chemically Crystalline magnesia Silicon carbide Silicon nitride Zirconium sulphate Crystalline magnesia Silicon carbide Silicon nitride Zirconium sulphate ANSWER DOWNLOAD EXAMIANS APP
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