Refractory Technology Ramming masses are used for Repairing construction of various furnace parts Neither A nor B Obtaining monolithic working faces Both A & B Repairing construction of various furnace parts Neither A nor B Obtaining monolithic working faces Both A & B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High porosity refractory bricks have Poor resistance to the peneration of molten slag, metal & flue gases All of these Poor heat conductivity & low strength Better thermal spalling resistance Poor resistance to the peneration of molten slag, metal & flue gases All of these Poor heat conductivity & low strength Better thermal spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite chrome refractories Have better spalling resistance than chrome magnesite refractories Have very low (50 kg/cm² ) cold crushing strength (C.C.S.), and can not be used in metalcase form Have very low thermal co-efficient of expansion Are not at all resistant to the corrosive action of iron oxide Have better spalling resistance than chrome magnesite refractories Have very low (50 kg/cm² ) cold crushing strength (C.C.S.), and can not be used in metalcase form Have very low thermal co-efficient of expansion Are not at all resistant to the corrosive action of iron oxide ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Colour of fireclay bricks is Black Light buff to reddish buff None of these Yellow Black Light buff to reddish buff None of these Yellow ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Zircon refractories have All of these Low co-efficient of expansion High RUL (1600°C) and refractoriness (> 2000°C) High spalling resistance All of these Low co-efficient of expansion High RUL (1600°C) and refractoriness (> 2000°C) High spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Bottom of basic open hearth furnace are constructed of Porous fireclay bricks Dead burnt magnesite ramming mass Semi-silica bricks Silicon carbide bricks Porous fireclay bricks Dead burnt magnesite ramming mass Semi-silica bricks Silicon carbide bricks ANSWER DOWNLOAD EXAMIANS APP
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