Refractory Technology Which property of refractories is the most important for top section of the blast furnace? Resistance to slag peneration Stability of volume at high temperature Resistance to abrasion Resistance to corrosion by slag Resistance to slag peneration Stability of volume at high temperature Resistance to abrasion Resistance to corrosion by slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chrome magnesite brick is not used for lining the Bottom hearth of reheating furnace Hearth of soaking pits Burning zone of limestone rotary kilns Coke oven regenerator Bottom hearth of reheating furnace Hearth of soaking pits Burning zone of limestone rotary kilns Coke oven regenerator ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Sillimanite is a __________ refractory. Insulating Basic Neutral High alumina Insulating Basic Neutral High alumina ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness/fusion points of 'superduty' refractories is __________ °C. 1630-1670 > 2000 1520-1630 > 1730 1630-1670 > 2000 1520-1630 > 1730 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one contains maximum percentage of Al2O₃ ? Aluminous firebrick Magnesite Sillimanite Firebrick Aluminous firebrick Magnesite Sillimanite Firebrick ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity of silica bricks varies from __________ percent. 45 to 60 5 to 10 20 to 30 60 to 75 45 to 60 5 to 10 20 to 30 60 to 75 ANSWER DOWNLOAD EXAMIANS APP
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