Refractory Technology Quartz is 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 All of these Converted to tridymite on firing between 870 to 1470°C Stable form of silica upto 870°C ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High alumina refractory compared to fireclay bricks have 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 Low refractoriness Less resistance to slag attack Less load bearing capacity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology A steel member used in the furnace construction to take the thrust of the brickwork is called Buckstay Baffle Armouring Breast wall Buckstay Baffle Armouring Breast wall ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which property of refractories is the most important for top section of the blast furnace? Resistance to abrasion Stability of volume at high temperature Resistance to slag peneration Resistance to corrosion by slag Resistance to abrasion Stability of volume at high temperature Resistance to slag peneration Resistance to corrosion by slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica bricks have low spalling resistance below 600°C, due to its Very high thermal conductivity High thermal diffusivity Low refractoriness High co-efficient of expansion upto this temperature Very high thermal conductivity High thermal diffusivity Low refractoriness High co-efficient of expansion upto this temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories are generally not used in the Steel melting furnace Burning zone of cement kilns Electric furnace walls Open hearth furnace Steel melting furnace Burning zone of cement kilns Electric furnace walls Open hearth furnace ANSWER DOWNLOAD EXAMIANS APP
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