Refractory Technology Spalling of a refractory means its 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 Resistancce to compressive loads Resistance to chemical action of gases and molten fluxes ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite chrome refractories Have very low thermal co-efficient of expansion Are not at all resistant to the corrosive action of iron oxide Have better spalling resistance than chrome magnesite refractories Have very low (50 kg/cm² ) cold crushing strength (C.C.S.), and can not be used in metalcase form Have very low thermal co-efficient of expansion Are not at all resistant to the corrosive action of iron oxide Have better spalling resistance than chrome magnesite refractories Have very low (50 kg/cm² ) cold crushing strength (C.C.S.), and can not be used in metalcase form ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory bricks with lower permeability is produced by using Finer grog size Higher moulding pressure All of these Higher firing temperature Finer grog size Higher moulding pressure All of these Higher firing temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which refractory must have controlled atmosphere (temperature and humidity) for its safe storage? Fireclay bricks Mullite bricks Magnesite bricks Tar bonded dolomite bricks Fireclay bricks Mullite bricks Magnesite bricks Tar bonded dolomite bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Pure oxide refractories are generally monocrystaliine in nature and are self bonded __________ bricks are generally used as moderator in nuclear reactors. Carborundum Corundum Thoria Beryllia Carborundum Corundum Thoria Beryllia ANSWER DOWNLOAD EXAMIANS APP
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