Refractory Technology Which of the following bricks should not be used, if the furnace is to be used intermit-tantly? Silicon carbide bricks Firebricks Silica bricks Sillimanite Silicon carbide bricks Firebricks Silica bricks Sillimanite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity of fireclay refractories is __________ percent. 25-35 44129 43961 35-50 25-35 44129 43961 35-50 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology SiO₂ percentage in firebrick is about 35-40 55-60 >94 80-85 35-40 55-60 >94 80-85 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Highest melting (m.p = 3070°C) oxide refractory is Alumina Magnesia Zirconia Thoria Alumina Magnesia Zirconia Thoria ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal diffusivity of a refractory brick is high, when its __________ is high. None of these Thermal conductivity Density Specific heat None of these Thermal conductivity Density Specific heat ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks is not used for lining the Cupola Roof of open hearth furnace Gas producer Bottom of hot metal mixer Cupola Roof of open hearth furnace Gas producer Bottom of hot metal mixer ANSWER DOWNLOAD EXAMIANS APP
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