Refractory Technology Lower part of hot metal mixer are lined with __________ bricks. Silica Carborundum Superduty fireclay High alumina Silica Carborundum Superduty fireclay High alumina ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Addition of grog in fireclay brick during its manufacture is advantageous, because it results in Less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production All of these High strength & thermal spalling resistance Less shrinkage in heating, decreased apparent porosity & increased specific gravity Less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production All of these High strength & thermal spalling resistance Less shrinkage in heating, decreased apparent porosity & increased specific gravity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Dolomite bricks have good resistance to attack by Lime slag None of these Molten steel Iron oxide Lime slag None of these Molten steel Iron oxide ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory materials are never used in the construction of Orton cones Ovens & retorts Segar cones Pressure vessels Orton cones Ovens & retorts Segar cones Pressure vessels ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay refractories have Low co-efficient of thermal expansion Poor thermal spalling resistance Tendency to expand unduly high during firing Very high cost Low co-efficient of thermal expansion Poor thermal spalling resistance Tendency to expand unduly high during firing Very high cost ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Presence of MgO in alumino-silicate refractories __________ its refractoriness. Increases Lowers Does not affect Either A or B; depends on its quantity Increases Lowers Does not affect Either A or B; depends on its quantity ANSWER DOWNLOAD EXAMIANS APP
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