Refractory Technology Outer combustion chamber of blast furnace stove is lined with __________ bricks. Fireclay Chrome magnesite Zirconia Silica Fireclay Chrome magnesite Zirconia Silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High density refractory bricks have lower Slag penetration resistance Thermal conductivity Spalling resistance Fusion point Slag penetration resistance Thermal conductivity Spalling resistance Fusion point ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling resistance of a refractory can not be increased by Decreasing its thermal co-efficient of expansion Making it denser Using a coarser grog during its manufacture Increasing its porosity Decreasing its thermal co-efficient of expansion Making it denser Using a coarser grog during its manufacture Increasing its porosity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content in firebricks, its fusion point (refractoriness) Decreases Decreases linearly Increases Remains unchanged Decreases Decreases linearly Increases Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the most stable crystalline form of silica at room temperature? None of these Quartz Cristobalite Tridymite None of these Quartz Cristobalite Tridymite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture? Sand Cork Chemically prepared foam Saw dust Sand Cork Chemically prepared foam Saw dust ANSWER DOWNLOAD EXAMIANS APP