Refractory Technology Graphite or carbon refractories Exihibit wetting characteristics Should be used in neutral or reducing atmosphere Are not resistant to corrosion by slag Exhibit high shrinkage on thermal treatment Exihibit wetting characteristics Should be used in neutral or reducing atmosphere Are not resistant to corrosion by slag Exhibit high shrinkage on thermal treatment 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. 55 70 90 80 55 70 90 80 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chromite refractories are Fired at a temperature of 600°C only Basic refractory Acidic refractory Neutral refractory Fired at a temperature of 600°C only Basic refractory Acidic refractory Neutral refractory 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 Fireclay Silica Corundum Magnesite Fireclay Silica Corundum ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as __________ percent. 10 30 20 15 10 30 20 15 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon bricks are not used in the lining of the Blast furnace hearth Combustion chamber of blast furnace stoves Electric furnaces Highly chemical resistant equipments Blast furnace hearth Combustion chamber of blast furnace stoves Electric furnaces Highly chemical resistant equipments ANSWER DOWNLOAD EXAMIANS APP
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