Refractory Technology Refractoriness under load (RUL) is the most important property for the refractory bricks None of these Used in the roof of the furnace Used for furnace insulation At the hearth bottom of the furnace on which stock is placed None of these Used in the roof of the furnace Used for furnace insulation At the hearth bottom of the furnace on which stock is placed ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology RUL of refractories depends on the Presence of impurities like iron & alkali Physical structure All of these Chemical composition Presence of impurities like iron & alkali Physical structure All of these Chemical composition ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory bricks with lower permeability is produced by using All of these Finer grog size Higher moulding pressure Higher firing temperature All of these Finer grog size Higher moulding pressure Higher firing temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following bricks has the most close values of RUL and PCE? Fireclay bricks Tar dolomite bricks Silica bricks High alumina bricks Fireclay bricks Tar dolomite bricks Silica bricks High alumina bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity is induced in insulating refractories by adding Calcium phosphate Powdered naphthalene Ammonium chloride/sulphate All of these Calcium phosphate Powdered naphthalene Ammonium chloride/sulphate All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ bricks should not be used in oxidising atmosphere. Carbon Silica Fireclay Tar dolomite Carbon Silica Fireclay Tar dolomite ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS