Refractory Technology Hot blast main (carrying air at 1000°C) in blast furnace are lined with __________ bricks. Silica Fireclay Magnesite Zirconia Silica Fireclay Magnesite Zirconia 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 55 90 80 70 55 90 80 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ of carbon blocks in the hearth of blast furnace helps in avoiding skull formation, when it becomes cold. High thermal conductivity Low porosity Non-wetting characteristics High density High thermal conductivity Low porosity Non-wetting characteristics High density ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ is the measure of the strength of refractory under the combined effect of temperature & load. RUL Specific gravity Porosity Thermal conductivity RUL Specific gravity Porosity Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology In panel test for spalling resistance, the average face temperature of panel assembly is maintained at __________ °C for 24 hours. 1600 1000 2000 700 1600 1000 2000 700 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology 'Spinel', a refractory mineral is chemically represented as MgSO₄ MgAl2O₃.2H₂O MgAl2O₃ MgAl2O₄ MgSO₄ MgAl2O₃.2H₂O MgAl2O₃ MgAl2O₄ ANSWER DOWNLOAD EXAMIANS APP
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