Refractory Technology Silica bricks are never used for lining the Dome of blast furnace stoves Beehive coke ovens By-product coke ovens Roof of open hearth furnace Dome of blast furnace stoves Beehive coke ovens By-product coke ovens Roof of open hearth furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology RUL of refractories depends on the Physical structure All of these Presence of impurities like iron & alkali Chemical composition Physical structure All of these Presence of impurities like iron & alkali Chemical composition ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness under loads (RUL) is quite close to the fusion temperature (PCE) for __________ bricks. Silica Very low alumina Fireclay Dolomite Silica Very low alumina Fireclay Dolomite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum water percentage in refractory mix meant for hand moulding may be as high as __________ percent. 5-7 14-20 7-12 2-3 5-7 14-20 7-12 2-3 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling resistance of a refractory can not be increased by Using a coarser grog during its manufacture Increasing its porosity Decreasing its thermal co-efficient of expansion Making it denser Using a coarser grog during its manufacture Increasing its porosity Decreasing its thermal co-efficient of expansion Making it denser ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum safe working temperature for fireclay bricks is about __________ °C. 1550 1450 1150 1300 1550 1450 1150 1300 ANSWER DOWNLOAD EXAMIANS APP
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