Refractory Technology Pyrometric cone equivalent (PCE) value (Segar cone) of 'superduty refractories' is more than 33 which corresponds to a temperature of __________ °C. 1730 1630 1670 1520 1730 1630 1670 1520 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion point of an acidic refractory material is Increased by the addition of basic oxides Not affected by the addition of basic oxides Not affected by the addition of basic oxides Reduced by the addition of basic oxides Increased by the addition of basic oxides Not affected by the addition of basic oxides Not affected by the addition of basic oxides Reduced by the addition of basic oxides ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Segar cones are used for the determination of __________ of refractories. Electrical conductivity Softening temperature Resistance to slag attack Spalling resistance Electrical conductivity Softening temperature Resistance to slag attack Spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories are generally not used in the Electric furnace walls Burning zone of cement kilns Open hearth furnace Steel melting furnace Electric furnace walls Burning zone of cement kilns Open hearth furnace Steel melting furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as __________ percent. 15 30 20 10 15 30 20 10 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is a basic refractory? None of these Fireclay Chrome magnesite Silica None of these Fireclay Chrome magnesite Silica ANSWER DOWNLOAD EXAMIANS APP
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