Refractory Technology Porosity is induced in insulating refractories by adding All of these Calcium phosphate Ammonium chloride/sulphate Powdered naphthalene All of these Calcium phosphate Ammonium chloride/sulphate Powdered naphthalene ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High alumina refractory compared to fireclay bricks have Less resistance to slag attack High resistance to thermal shock and creep Low refractoriness Less load bearing capacity Less resistance to slag attack High resistance to thermal shock and creep Low refractoriness Less load bearing capacity 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 Both A & B Corrosion by layer of slag Neither A nor B Washing action of metal Both A & B Corrosion by layer of slag Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Machine moulding of dry mixture of refractories requires a pressure of the order of __________ kg/cm². 100 1000 500 10 100 1000 500 10 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one contains maximum percentage of Al2O₃ ? Aluminous firebrick Magnesite Firebrick Sillimanite Aluminous firebrick Magnesite Firebrick Sillimanite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hot blast main (carrying air at 1000°C) in blast furnace are lined with __________ bricks. Magnesite Silica Fireclay Zirconia Magnesite Silica Fireclay Zirconia ANSWER DOWNLOAD EXAMIANS APP
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