Refractory Technology Tar bonded dolomite bricks Are used in outer lining of L.D. converters Have poorer hydration resistance than pitch bonded bricks Are stored under controlled temperature & humidity to avoid hydration All of these Are used in outer lining of L.D. converters Have poorer hydration resistance than pitch bonded bricks Are stored under controlled temperature & humidity to avoid hydration All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Sillimanite is a __________ refractory. Basic High alumina Neutral Insulating Basic High alumina Neutral Insulating ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which form of silica has the highest specific gravity? Cristobalite Tridymite All of these Quartz Cristobalite Tridymite All of these Quartz ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology What is Thoria? Which is expensive & radioactive, is used in crucibles for melting high purity metals Thoria Has high fusion temperature (> 3000°C) but poor resistance to thermal shock All of these Thoria Has high resistance to basic slags Which is expensive & radioactive, is used in crucibles for melting high purity metals Thoria Has high fusion temperature (> 3000°C) but poor resistance to thermal shock All of these Thoria Has high resistance to basic slags ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Resistance to slag attack of a refractory All of these Decreases, if defective joints & cracks exist in the refractory Depends on the nature of slag & refractory Decreases at higher temperature All of these Decreases, if defective joints & cracks exist in the refractory Depends on the nature of slag & refractory Decreases at higher temperature ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS