Refractory Technology Hot blast main (carrying air at 1000°C) in blast furnace are lined with __________ bricks. Magnesite Silica Fireclay Zirconia Magnesite Silica Fireclay Zirconia ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks is not used for lining the Gas producer Bottom of hot metal mixer Roof of open hearth furnace Cupola Gas producer Bottom of hot metal mixer Roof of open hearth furnace Cupola ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories are used for the construction of those furnaces, which are Not subjected to fluctuation in temperature Used for raising & maintaining high temperature Not required to resist the corrosive action of basic slag Both (b) and © Not subjected to fluctuation in temperature Used for raising & maintaining high temperature Not required to resist the corrosive action of basic slag Both (b) and © ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as __________ percent. 30 20 15 10 30 20 15 10 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling tendency of refractories is reduced by increasing its Specific gravity Strength Porosity Thermal conductivity Specific gravity Strength Porosity Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion point of a basic refractory material is Increased by the addition of acid oxides Always less than 1000°C Not affected by the addition of acid oxides Reduced by the addition of acid oxides Increased by the addition of acid oxides Always less than 1000°C Not affected by the addition of acid oxides Reduced by the addition of acid oxides ANSWER DOWNLOAD EXAMIANS APP
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