Refractory Technology Roof of a basic electric furnace is made of __________ bricks. Superduty fireclay Silica Chromite None of these Superduty fireclay Silica Chromite None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following does not occur during firing/burning of refractories? Decrease in crushing strength Development of stable mineral form Vitrification Removal of water of hydration Decrease in crushing strength Development of stable mineral form Vitrification Removal of water of hydration ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories are generally not used in the Burning zone of cement kilns Electric furnace walls Steel melting furnace Open hearth furnace Burning zone of cement kilns Electric furnace walls Steel melting furnace Open hearth furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal conductivity of refractory bricks Decreases with decreases in porosity Increases with decrease in porosity Increases with the amount of air entrapped in pores Is independent of its porosity and is maximum for insulating bricks Decreases with decreases in porosity Increases with decrease in porosity Increases with the amount of air entrapped in pores Is independent of its porosity and is maximum for insulating bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Slide gates in teeming laddie used for steel pouring in ingot moulds is lined with __________ bricks. Semi-silica Fireclay Bakelite impregnated or fused periclase Silica Semi-silica Fireclay Bakelite impregnated or fused periclase Silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Periclase is MgCO₃ Amorphous magnesite Crystalline form of MgO ZrSO₄ MgCO₃ Amorphous magnesite Crystalline form of MgO ZrSO₄ ANSWER DOWNLOAD EXAMIANS APP
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