Refractory Technology Spalling resistance of a refractory can not be increased by Decreasing its thermal co-efficient of expansion Using a coarser grog during its manufacture Making it denser Increasing its porosity Decreasing its thermal co-efficient of expansion Using a coarser grog during its manufacture Making it denser Increasing its porosity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Sillimanite is a __________ refractory. Insulating Neutral High alumina Basic Insulating Neutral High alumina Basic ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks are never used in the Lead blast furnace Beehive oven Coke oven walls Zinc roaster Lead blast furnace Beehive oven Coke oven walls Zinc roaster ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology RUL of refractories depends on the Chemical composition All of these Physical structure Presence of impurities like iron & alkali Chemical composition All of these Physical structure Presence of impurities like iron & alkali ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following impurities reduces the refractoriness of magnesite bricks? All of these SiO₂ Al2O₃ CaO All of these SiO₂ Al2O₃ CaO ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hot blast main (carrying air at 1000°C) in blast furnace are lined with __________ bricks. Zirconia Magnesite Silica Fireclay Zirconia Magnesite Silica Fireclay ANSWER DOWNLOAD EXAMIANS APP
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