Refractory Technology Slide gates in teeming laddie used for steel pouring in ingot moulds is lined with __________ bricks. Semi-silica Silica Bakelite impregnated or fused periclase Fireclay Semi-silica Silica Bakelite impregnated or fused periclase Fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Alumina-graphite bricks are used for lining the Both A & B Continuous casting systems Slide gate in teeming laddies Neither A nor B Both A & B Continuous casting systems Slide gate in teeming laddies Neither A nor B 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 Natural silica Transforms to other allotropic forms i.e tridymite and cristoballite involving very high volume changes Mainly contains quartz All of these Is not stable at high temperature Transforms to other allotropic forms i.e tridymite and cristoballite involving very high volume changes Mainly contains quartz All of these Is not stable at high temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The highest melting pure oxide (m.p. > 3000°C) is Alumina Thoria Beryllia Zirconia Alumina Thoria Beryllia Zirconia ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Mullite is chemically represented by Al2O₃ . 2SiO₂ 2Al2O₃ . 3SiO₂ 3Al2O₃ . 2SiO₂ Al2O₃ . SiO₂ Al2O₃ . 2SiO₂ 2Al2O₃ . 3SiO₂ 3Al2O₃ . 2SiO₂ Al2O₃ . SiO₂ ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS