Refractory Technology The linear thermal expansion of __________ bricks upto 1000 °C is very low of the order of ≤ 0.5 percent. Silica Fireclay Magnesite Corundum Silica Fireclay Magnesite Corundum ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Skull is not formed on the carbon blocks in the hearth of a blast furnace, when it becomes cold, becaus of its None of these High thermal conductivity Non-wetting characteristic High crushing strength None of these High thermal conductivity Non-wetting characteristic High crushing strength ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chrome magnesite bricks are Neutral in nature Having higher RUL than silica bricks Acidic in nature Made by mixing 30% chromite and 70% periclase Neutral in nature Having higher RUL than silica bricks Acidic in nature Made by mixing 30% chromite and 70% periclase ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content, the refractoriness of high alumina refractories Remains same Decreases May increase or decrease Increases Remains same Decreases May increase or decrease Increases ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling of a refractory means its 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 Softening ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Dolomite bricks have good resistance to attack by Iron oxide Lime slag Molten steel None of these Iron oxide Lime slag Molten steel None of these ANSWER DOWNLOAD EXAMIANS APP
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