Refractory Technology Alumina-graphite bricks are used for lining the Continuous casting systems Both A & B Neither A nor B Slide gate in teeming laddies Continuous casting systems Both A & B Neither A nor B Slide gate in teeming laddies ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is a basic refractory? Chrome magnesite None of these Silica Fireclay Chrome magnesite None of these Silica Fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the stable form of silica upto 1470°C ? Cristobalite None of these Tridymite Quartz Cristobalite None of these Tridymite Quartz ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Because of its very high refractoriness of the order of __________ °C, silicon carbide refractories are used in zinc smelting furnace, muffle furnace and for supporting the wares in tunnel kilns. 2200 1800 2700 2400 2200 1800 2700 2400 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hot face insulating linings of high purity alumina fused mullite are used, where Presence of iron or silica is harmful All of these Very high temperatures are involved Highly reducing conditions are involved Presence of iron or silica is harmful All of these Very high temperatures are involved Highly reducing conditions are involved 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 corrosion by slag Stability of volume at high temperature Resistance to abrasion Resistance to slag peneration Resistance to corrosion by slag Stability of volume at high temperature Resistance to abrasion ANSWER DOWNLOAD EXAMIANS APP
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