Refractory Technology Bottom of basic open hearth furnace are constructed of Porous fireclay bricks Dead burnt magnesite ramming mass Silicon carbide bricks Semi-silica bricks Porous fireclay bricks Dead burnt magnesite ramming mass Silicon carbide bricks Semi-silica bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the Washing action of metal Corrosion by layer of slag Both A & B Neither A nor B Washing action of metal Corrosion by layer of slag Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following has the lowest electrical resistivity? Fireclay Alumina Zircon Graphite Fireclay Alumina Zircon Graphite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High refractorinness of refractory bricks means, that it has a Low porosity Low spalling resistance High spalling resistance High resistance to fusion Low porosity Low spalling resistance High spalling resistance High resistance to fusion ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Vacuum steel degassing units are lined with High alumina bricks Silica bricks Low duty firebricks Graphite blocks High alumina bricks Silica bricks Low duty firebricks Graphite blocks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Ceramic recuperators used for waste heat recovery from high temperature flue gas going out of the furnace is made of Fireclay Siliceous fireclay Corrundum Silicon carbide Fireclay Siliceous fireclay Corrundum Silicon carbide ANSWER DOWNLOAD EXAMIANS APP
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