Refractory Technology Refractoriness of a typical silica brick corresponds to Segar cone number, '32', which is equivalent to a temperature of __________ °C. 1915 1380 1520 1710 1915 1380 1520 1710 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica bricks are attacked by basic slags at high temperature. Which of the following is not used solely as a binding material? Aluminium phosphate Plaster of paris Water Lime Aluminium phosphate Plaster of paris Water Lime ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following impurities reduces the refractoriness of magnesite bricks? Al2O₃ CaO SiO₂ All of these Al2O₃ CaO SiO₂ All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Crushing strength of a refractory Is unaffected with change in service temperature Decreases with increase in porosity Decreases with rise in service temperature Increases with rise in service temperature Is unaffected with change in service temperature Decreases with increase in porosity Decreases with rise in service temperature Increases with rise in service temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High porosity refractory bricks have All of these Poor heat conductivity & low strength Better thermal spalling resistance Poor resistance to the peneration of molten slag, metal & flue gases All of these Poor heat conductivity & low strength Better thermal spalling resistance Poor resistance to the peneration of molten slag, metal & flue gases ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Colour of fireclay bricks is Black None of these Yellow Light buff to reddish buff Black None of these Yellow Light buff to reddish buff ANSWER DOWNLOAD EXAMIANS APP
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