Refractory Technology Pyrometric cone equivalent (PCE) value (Segar cone) of 'superduty refractories' is more than 33 which corresponds to a temperature of __________ °C. 1730 1520 1670 1630 1730 1520 1670 1630 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Slide gates in teeming laddie used for steel pouring in ingot moulds is lined with __________ bricks. Semi-silica Bakelite impregnated or fused periclase Fireclay Silica Semi-silica Bakelite impregnated or fused periclase Fireclay Silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness under loads (RUL) is quite close to the fusion temperature (PCE) for __________ bricks. Silica Fireclay Very low alumina Dolomite Silica Fireclay Very low alumina Dolomite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Quartz is All of these Converted to tridymite on firing between 870 to 1470°C Stable form of silica upto 870°C Transformed to crystoballite on heating above 1470°C All of these Converted to tridymite on firing between 870 to 1470°C Stable form of silica upto 870°C Transformed to crystoballite on heating above 1470°C ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High alumina refractory compared to fireclay bricks have Low refractoriness Less resistance to slag attack Less load bearing capacity High resistance to thermal shock and creep Low refractoriness Less resistance to slag attack Less load bearing capacity High resistance to thermal shock and creep ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Machine moulding of dry mixture of refractories requires a pressure of the order of __________ kg/cm². 500 1000 10 100 500 1000 10 100 ANSWER DOWNLOAD EXAMIANS APP
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