Refractory Technology Tar bonded dolomite bricks Are used in outer lining of L.D. converters Are stored under controlled temperature & humidity to avoid hydration Have poorer hydration resistance than pitch bonded bricks All of these Are used in outer lining of L.D. converters Are stored under controlled temperature & humidity to avoid hydration Have poorer hydration resistance than pitch bonded bricks All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cold crushing strength of fireclay bricks is about __________ kgf/cm². 100-150 50-100 200-400 500-1000 100-150 50-100 200-400 500-1000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cold crushing strength of refractories depends upon its All of these Composition Firing temperature Texture All of these Composition Firing temperature Texture ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not an acidic refractory? High alumina refractory Silica Fireclay Carbon black High alumina refractory Silica Fireclay Carbon black ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Roof of a basic electric furnace is made of __________ bricks. Superduty fireclay Silica None of these Chromite Superduty fireclay Silica None of these Chromite 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
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