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
Refractory Technology Highest melting (m.p = 3070°C) oxide refractory is Zirconia Magnesia Alumina Thoria Zirconia Magnesia Alumina Thoria ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Capacity of a refractory brick to withstand-sudden changes in temperature is denoted by the property called Refractoriness Refractoriness under load (RUL) None of these Spalling resistance Refractoriness Refractoriness under load (RUL) None of these Spalling resistance 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 Increasing its porosity Using a coarser grog during its manufacture Decreasing its thermal co-efficient of expansion Making it denser Increasing its porosity Using a coarser grog during its manufacture ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology SiO₂ percentage in firebrick is about 35-40 80-85 55-60 >94 35-40 80-85 55-60 >94 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Pyrometric cone equivalent (PCE) value (Segar cone) of 'superduty refractories' is more than 33 which corresponds to a temperature of __________ °C. 1520 1630 1730 1670 1520 1630 1730 1670 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS