Refractory Technology With increase in the alumina content, the refractoriness of high alumina refractories May increase or decrease Increases Remains same Decreases May increase or decrease Increases Remains same Decreases ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica bricks have low spalling resistance below 600°C, due to its High thermal diffusivity Low refractoriness Very high thermal conductivity High co-efficient of expansion upto this temperature High thermal diffusivity Low refractoriness Very high thermal conductivity High co-efficient of expansion upto this temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Firing temperature of magnesite bricks is about __________ °C. 800-1000 1000-1200 2400-2600 1600-1800 800-1000 1000-1200 2400-2600 1600-1800 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness of a typical silica brick corresponds to Segar cone number, '32', which is equivalent to a temperature of __________ °C. 1915 1520 1380 1710 1915 1520 1380 1710 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Sillimanite is a __________ refractory. Neutral Insulating Basic High alumina Neutral Insulating Basic High alumina ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ of carbon blocks in the hearth of blast furnace helps in avoiding skull formation, when it becomes cold. Non-wetting characteristics High thermal conductivity Low porosity High density Non-wetting characteristics High thermal conductivity Low porosity High density ANSWER DOWNLOAD EXAMIANS APP
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