Refractory Technology To resist spalling tendency, a refractory should have All of these Greater diffusivity Low specific heat Low thermal co-efficient of expansion All of these Greater diffusivity Low specific heat Low thermal co-efficient of expansion ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following impurities reduces the refractoriness of magnesite bricks? All of these CaO Al2O₃ SiO₂ All of these CaO Al2O₃ SiO₂ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Slide gates in teeming laddie used for steel pouring in ingot moulds is lined with __________ bricks. Silica Bakelite impregnated or fused periclase Fireclay Semi-silica Silica Bakelite impregnated or fused periclase Fireclay Semi-silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks is not used for lining the Bottom of hot metal mixer Roof of open hearth furnace Cupola Gas producer Bottom of hot metal mixer Roof of open hearth furnace Cupola Gas producer ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay refractories have Poor thermal spalling resistance Low co-efficient of thermal expansion Tendency to expand unduly high during firing Very high cost Poor thermal spalling resistance Low co-efficient of thermal expansion Tendency to expand unduly high during firing Very high cost 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
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