Refractory Technology Refractoriness/fusion points of 'superduty' refractories is __________ °C. > 1730 > 2000 1630-1670 1520-1630 > 1730 > 2000 1630-1670 1520-1630 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to Thermal spalling Slag attack CO attack Fusion under load Thermal spalling Slag attack CO attack Fusion under load ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one contains minimum percentage of SiO₂? Firebrick Semi-silica Aluminous firebrick Sillimanite Firebrick Semi-silica Aluminous firebrick Sillimanite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thoria is an expensive refractory material and is radioactive in nature. Thorium oxide is used in the manufacture of Segar cones Insulating bricks Muffles for muffle furnaces Crucibles used for melting of high purity metals Segar cones Insulating bricks Muffles for muffle furnaces Crucibles used for melting of high purity metals ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which property of refractories is the most important for top section of the blast furnace? Resistance to slag peneration Resistance to abrasion Stability of volume at high temperature Resistance to corrosion by slag Resistance to slag peneration Resistance to abrasion Stability of volume at high temperature Resistance to corrosion by slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks are not used in the By-product coke oven walls Combustion chamber of B.F. stoves Coke oven regenerators Beehive coke oven By-product coke oven walls Combustion chamber of B.F. stoves Coke oven regenerators Beehive coke oven ANSWER DOWNLOAD EXAMIANS APP
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