Refractory Technology Which is the stable form of silica below 870°C ? None of these Cristobalite Tridymite Quartz None of these Cristobalite Tridymite Quartz ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Zircon refractories have High RUL (1600°C) and refractoriness (> 2000°C) All of these Low co-efficient of expansion High spalling resistance High RUL (1600°C) and refractoriness (> 2000°C) All of these Low co-efficient of expansion High spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content, the refractoriness of high alumina refractories Increases Remains same May increase or decrease Decreases Increases Remains same May increase or decrease Decreases ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion point of an acidic refractory material is Not affected by the addition of basic oxides Reduced by the addition of basic oxides Not affected by the addition of basic oxides Increased by the addition of basic oxides Not affected by the addition of basic oxides Reduced by the addition of basic oxides Not affected by the addition of basic oxides Increased by the addition of basic oxides ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Firing temperature of magnesite bricks is about __________ °C. 1600-1800 2400-2600 1000-1200 800-1000 1600-1800 2400-2600 1000-1200 800-1000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following consumes the maximum tonnage of refractories annually in an integrated steel plant? Ceheating furnace Rotary lime kiln L.D. converter Soaking pits Ceheating furnace Rotary lime kiln L.D. converter Soaking pits ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS