Refractory Technology Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the Corrosion by layer of slag Both A & B Washing action of metal Neither A nor B Corrosion by layer of slag Both A & B Washing action of metal Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High porosity refractory bricks have Better thermal spalling resistance All of these Poor resistance to the peneration of molten slag, metal & flue gases Poor heat conductivity & low strength Better thermal spalling resistance All of these Poor resistance to the peneration of molten slag, metal & flue gases Poor heat conductivity & low strength ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not an alumino-silicate refractory? Mullite bricks Tar dolomite bricks High alumina bricks Fireclay bricks Mullite bricks Tar dolomite bricks High alumina bricks Fireclay bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Machine moulding of dry mixture of refractories requires a pressure of the order of __________ kg/cm². 10 100 500 1000 10 100 500 1000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hot metal runner in blast furnace are lined with __________ bricks. Carborundum Fireclay Silica Magnesite Carborundum Fireclay Silica Magnesite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ of carbon blocks in the hearth of blast furnace helps in avoiding skull formation, when it becomes cold. High thermal conductivity Low porosity Non-wetting characteristics High density High thermal conductivity Low porosity Non-wetting characteristics High density ANSWER DOWNLOAD EXAMIANS APP
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