Refractory Technology Silica bricks have low spalling resistance below 600°C, due to its High co-efficient of expansion upto this temperature High thermal diffusivity Low refractoriness Very high thermal conductivity High co-efficient of expansion upto this temperature High thermal diffusivity Low refractoriness Very high thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chrome magnesite brick is not used for lining the Coke oven regenerator Burning zone of limestone rotary kilns Hearth of soaking pits Bottom hearth of reheating furnace Coke oven regenerator Burning zone of limestone rotary kilns Hearth of soaking pits Bottom hearth of reheating furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Furnace atmosphere for softening temperature determination of refractories (in which segar cones are placed) should be Neither A nor B Neutral Oxidising Either A or B Neither A nor B Neutral Oxidising Either A or B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks are never used in the Coke oven walls Beehive oven Zinc roaster Lead blast furnace Coke oven walls Beehive oven Zinc roaster Lead blast furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Natural silica Is not stable at high temperature Transforms to other allotropic forms i.e tridymite and cristoballite involving very high volume changes All of these Mainly contains quartz Is not stable at high temperature Transforms to other allotropic forms i.e tridymite and cristoballite involving very high volume changes All of these Mainly contains quartz ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica bricks are never used for lining the Roof of open hearth furnace Dome of blast furnace stoves By-product coke ovens Beehive coke ovens Roof of open hearth furnace Dome of blast furnace stoves By-product coke ovens Beehive coke ovens ANSWER DOWNLOAD EXAMIANS APP
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