Refractory Technology Addition of grog in fireclay brick during its manufacture is advantageous, because it results in All of these Less shrinkage in heating, decreased apparent porosity & increased specific gravity High strength & thermal spalling resistance 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 Less shrinkage in heating, decreased apparent porosity & increased specific gravity High strength & thermal spalling resistance Less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory bricks having lower porosity have High insulating properties Low heat capacity Greater strength Low thermal conductivity High insulating properties Low heat capacity Greater strength Low thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories used in/for __________ should have low thermal conductivity. Regenerators Coke ovens Insulation Muffle furnaces Regenerators Coke ovens Insulation Muffle furnaces ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories are generally not used in the Steel melting furnace Burning zone of cement kilns Open hearth furnace Electric furnace walls Steel melting furnace Burning zone of cement kilns Open hearth furnace Electric furnace walls ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Sillimanite is a __________ refractory. Neutral High alumina Insulating Basic Neutral High alumina Insulating Basic ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Ramming masses are used for Obtaining monolithic working faces Neither A nor B Both A & B Repairing construction of various furnace parts Obtaining monolithic working faces Neither A nor B Both A & B Repairing construction of various furnace parts ANSWER DOWNLOAD EXAMIANS APP
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