Refractory Technology Most Cermets, which normally have high thermal conductivity and high thermal shock resistance, comprises of ceramic & metallic components of __________ percent respectively. 80 and 20 20 and 80 60 and 40 50 and 50 80 and 20 20 and 80 60 and 40 50 and 50 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increasing alumina content, the fusion point of high alumina refractories Remains constant May increase or decrease ; depends on its alumina content Decreases Increases Remains constant May increase or decrease ; depends on its alumina content Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon refractory blocks Are used in the hearth of blast furnace Are wetted by molten iron Are acidic in nature All of these Are used in the hearth of blast furnace Are wetted by molten iron Are acidic in nature All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Pyrometric cone equivalent (PCE) of a refractory is the measure of its Fusion point Resistance to carbon monoxide attack Resistance to slag penetration Spalling resistance Fusion point Resistance to carbon monoxide attack Resistance to slag penetration Spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Grog addition in fireclay during brick manufacture is done to All of these Impart greater spalling resistance Enhance the strength of fired refractories Reduce its shrinkage on heating All of these Impart greater spalling resistance Enhance the strength of fired refractories Reduce its shrinkage on heating ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Lower wall courses of soaking pits are made of __________ bricks to avoid the action of molten slag & scale. Silicon carbide Chrome or magnesite Silica Lowduty fireclay Silicon carbide Chrome or magnesite Silica Lowduty fireclay ANSWER DOWNLOAD EXAMIANS APP
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