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 Ramming masses are used for Both A & B Repairing construction of various furnace parts Obtaining monolithic working faces Neither A nor B Both A & B Repairing construction of various furnace parts Obtaining monolithic working faces Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Ceramic recuperators used for waste heat recovery from high temperature flue gas going out of the furnace is made of Silicon carbide Corrundum Siliceous fireclay Fireclay Silicon carbide Corrundum Siliceous fireclay Fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Pure bauxite is the best raw material for the manufacture of high alumina refractories, in which maximum alumina content can be as high as __________ percent. 70 90 55 80 70 90 55 80 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The main raw material for manufacture of silicon carbide refractories is Carborundum Periclase Corrundum Bauxite Carborundum Periclase Corrundum Bauxite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The linear thermal expansion of __________ bricks upto 1000 °C is very low of the order of ≤ 0.5 percent. Magnesite Silica Fireclay Corundum Magnesite Silica Fireclay Corundum ANSWER DOWNLOAD EXAMIANS APP
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