Refractory Technology Spalling tendency of refractories is reduced by increasing its Specific gravity Strength Porosity Thermal conductivity Specific gravity Strength Porosity Thermal conductivity 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 High strength & thermal spalling resistance Less shrinkage in heating, decreased apparent porosity & increased specific gravity All of these Less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production High strength & thermal spalling resistance Less shrinkage in heating, decreased apparent porosity & increased specific gravity All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rotary kilns meant for calcination of limestone are lined with chrome magnesite in __________ zone. All of these Burning Preheating Cooling All of these Burning Preheating Cooling ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory castables are used for All of these Producing monolithic linings Patch work Minimising the number of joints in the structure All of these Producing monolithic linings Patch work Minimising the number of joints in the structure ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Lower wall courses of soaking pits are made of __________ bricks to avoid the action of molten slag & scale. Lowduty fireclay Silica Silicon carbide Chrome or magnesite Lowduty fireclay Silica Silicon carbide Chrome or magnesite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Permeability of bricks is a measure of the Rate at which a fluid will pass through the pores Expansion during heating Melting point Refractoriness Rate at which a fluid will pass through the pores Expansion during heating Melting point Refractoriness ANSWER DOWNLOAD EXAMIANS APP
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