Refractory Technology Silicon carbide refractories are used in the Zinc smelting furnace Muffle furnace All of these Ceramic recuperators Zinc smelting furnace Muffle furnace All of these Ceramic recuperators ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology What is Thoria? 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 All of these Thoria Has high resistance to basic slags ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Test piece for determination of RUL of a refractory is heated in a/an Electric furnace Oxidising atmosphere Reducing atmosphere Neutral atmosphere Electric furnace Oxidising atmosphere Reducing atmosphere Neutral atmosphere ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ of carbon blocks in the hearth of blast furnace helps in avoiding skull formation, when it becomes cold. Non-wetting characteristics Low porosity High thermal conductivity High density Non-wetting characteristics Low porosity High thermal conductivity High density ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Machine moulding of dry mixture of refractories requires a pressure of the order of __________ kg/cm². 10 500 1000 100 10 500 1000 100 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Grog addition in fireclay during brick manufacture is done to All of these Enhance the strength of fired refractories Reduce its shrinkage on heating Impart greater spalling resistance All of these Enhance the strength of fired refractories Reduce its shrinkage on heating Impart greater spalling resistance ANSWER DOWNLOAD EXAMIANS APP
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