Refractory Technology SiO₂ percentage in firebrick is about 55-60 35-40 >94 80-85 55-60 35-40 >94 80-85 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Graphite or carbon refractories Exihibit wetting characteristics Are not resistant to corrosion by slag Should be used in neutral or reducing atmosphere Exhibit high shrinkage on thermal treatment Exihibit wetting characteristics Are not resistant to corrosion by slag Should be used in neutral or reducing atmosphere Exhibit high shrinkage on thermal treatment ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories used in/for __________ should have low thermal conductivity. Insulation Regenerators Coke ovens Muffle furnaces Insulation Regenerators Coke ovens Muffle furnaces ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion temperature of pure silica (SiO₂) is __________ °C. 2800 2570 1715 1350 2800 2570 1715 1350 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 Silica bricks are never used for lining the Beehive coke ovens Roof of open hearth furnace By-product coke ovens Dome of blast furnace stoves Beehive coke ovens Roof of open hearth furnace By-product coke ovens Dome of blast furnace stoves ANSWER DOWNLOAD EXAMIANS APP
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