Refractory Technology Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to Thermal spalling Fusion under load Slag attack CO attack Thermal spalling Fusion under load Slag attack CO attack ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon refractories are exclusively used in the Walls of coke oven Hearth of blast furnace Side wall of soaking pits Regenerators of coke oven Walls of coke oven Hearth of blast furnace Side wall of soaking pits Regenerators of coke oven ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hot face insulating linings of high purity alumina fused mullite are used, where All of these Presence of iron or silica is harmful Very high temperatures are involved Highly reducing conditions are involved All of these Presence of iron or silica is harmful Very high temperatures are involved Highly reducing conditions are involved ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories are used for the construction of those furnaces, which are Not subjected to fluctuation in temperature Not required to resist the corrosive action of basic slag Used for raising & maintaining high temperature Both (b) and © Not subjected to fluctuation in temperature Not required to resist the corrosive action of basic slag Used for raising & maintaining high temperature Both (b) and © ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not an alumino-silicate refractory? Mullite bricks High alumina bricks Tar dolomite bricks Fireclay bricks Mullite bricks High alumina bricks Tar dolomite bricks Fireclay bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Graphite or carbon refractories Exhibit high shrinkage on thermal treatment Are not resistant to corrosion by slag Exihibit wetting characteristics Should be used in neutral or reducing atmosphere Exhibit high shrinkage on thermal treatment Are not resistant to corrosion by slag Exihibit wetting characteristics Should be used in neutral or reducing atmosphere ANSWER DOWNLOAD EXAMIANS APP
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