Refractory Technology Which one contains minimum percentage of SiO₂? Sillimanite Aluminous firebrick Semi-silica Firebrick Sillimanite Aluminous firebrick Semi-silica Firebrick ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Lower part of hot metal mixer are lined with __________ bricks. Silica Superduty fireclay High alumina Carborundum Silica Superduty fireclay High alumina Carborundum ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High density refractory bricks have lower Spalling resistance Thermal conductivity Fusion point Slag penetration resistance Spalling resistance Thermal conductivity Fusion point Slag penetration resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which property of refractories is the most important for top section of the blast furnace? Stability of volume at high temperature Resistance to corrosion by slag Resistance to abrasion Resistance to slag peneration Stability of volume at high temperature Resistance to corrosion by slag Resistance to abrasion Resistance to slag peneration ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Furnace atmosphere for softening temperature determination of refractories (in which segar cones are placed) should be Neither A nor B Either A or B Oxidising Neutral Neither A nor B Either A or B Oxidising Neutral ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Graphite or carbon refractories Exhibit high shrinkage on thermal treatment Exihibit wetting characteristics Should be used in neutral or reducing atmosphere Are not resistant to corrosion by slag Exhibit high shrinkage on thermal treatment Exihibit wetting characteristics Should be used in neutral or reducing atmosphere Are not resistant to corrosion by slag ANSWER DOWNLOAD EXAMIANS APP