Refractory Technology Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the Corrosion by layer of slag Washing action of metal Neither A nor B Both A & B Corrosion by layer of slag Washing action of metal Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity is induced in insulating refractories by adding Calcium phosphate Powdered naphthalene All of these Ammonium chloride/sulphate Calcium phosphate Powdered naphthalene All of these Ammonium chloride/sulphate ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology PCE value (Segar cone) of superduty refractories is more than 33, which is equivalent to a temperature of __________ °C. 1630 1520 1670 1730 1630 1520 1670 1730 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Graphite or carbon refractories Exihibit wetting characteristics Exhibit high shrinkage on thermal treatment Are not resistant to corrosion by slag Should be used in neutral or reducing atmosphere Exihibit wetting characteristics Exhibit high shrinkage on thermal treatment Are not resistant to corrosion by slag Should be used in neutral or reducing atmosphere ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology silicon carbide refractories have very low Resistance to thermal shock Thermal conductivity Refractoriness (< 1700°C) None of these Resistance to thermal shock Thermal conductivity Refractoriness (< 1700°C) None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Firing of refractory brick is done to Develop stable mineral forms in them Dehydrate the dried refractory All of these Form ceramic bonds necessary for development of high crushing strength in the finished product Develop stable mineral forms in them Dehydrate the dried refractory All of these Form ceramic bonds necessary for development of high crushing strength in the finished product ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS