Refractory Technology Silica bricks have low spalling resistance below 600°C, due to its High co-efficient of expansion upto this temperature Very high thermal conductivity High thermal diffusivity Low refractoriness High co-efficient of expansion upto this temperature Very high thermal conductivity High thermal diffusivity Low refractoriness ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Basic bricks are not made of Magnesite Fireclay Foresterite Chromite Magnesite Fireclay Foresterite Chromite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks are not used in the By-product coke oven walls Beehive coke oven Combustion chamber of B.F. stoves Coke oven regenerators By-product coke oven walls Beehive coke oven Combustion chamber of B.F. stoves Coke oven regenerators ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is an acidic refractory? Dolomite Fireclay Magnesite Chrome magnesite Dolomite Fireclay Magnesite Chrome magnesite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Natural silica Transforms to other allotropic forms i.e tridymite and cristoballite involving very high volume changes Is not stable at high temperature All of these Mainly contains quartz Transforms to other allotropic forms i.e tridymite and cristoballite involving very high volume changes Is not stable at high temperature All of these Mainly contains quartz ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High porosity refractory bricks have Poor resistance to the peneration of molten slag, metal & flue gases All of these Better thermal spalling resistance Poor heat conductivity & low strength Poor resistance to the peneration of molten slag, metal & flue gases All of these Better thermal spalling resistance Poor heat conductivity & low strength ANSWER DOWNLOAD EXAMIANS APP
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