Refractory Technology Pure oxide refractories are generally monocrystaliine in nature and are self bonded __________ bricks are generally used as moderator in nuclear reactors. Beryllia Thoria Carborundum Corundum Beryllia Thoria Carborundum Corundum ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Highest melting (m.p = 3070°C) oxide refractory is Thoria Magnesia Zirconia Alumina Thoria Magnesia Zirconia Alumina ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory bricks with lower permeability is produced by using All of these Higher firing temperature Higher moulding pressure Finer grog size All of these Higher firing temperature Higher moulding pressure Finer grog size ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness of a typical silica brick corresponds to Segar cone number, '32', which is equivalent to a temperature of __________ °C. 1710 1520 1380 1915 1710 1520 1380 1915 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay refractories Shrink during firing Combine with salts (e.g. chlorides sulphates etc.) & bases (e.g. lime, magnesia etc.) forming fusible aluminates silicates etc All of these Are not resistant to the action of basic slags Shrink during firing Combine with salts (e.g. chlorides sulphates etc.) & bases (e.g. lime, magnesia etc.) forming fusible aluminates silicates etc All of these Are not resistant to the action of basic slags ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica refractories Can not be used in the dome of hot blast stoves All of these Crack when subjected to sudden change of temperature Have lower thermal conductivity than fireclay bricks Can not be used in the dome of hot blast stoves All of these Crack when subjected to sudden change of temperature Have lower thermal conductivity than fireclay bricks ANSWER DOWNLOAD EXAMIANS APP
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