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