Refractory Technology Mullite is chemically represented by 2Al2O₃ . 3SiO₂ 3Al2O₃ . 2SiO₂ Al2O₃ . 2SiO₂ Al2O₃ . SiO₂ 2Al2O₃ . 3SiO₂ 3Al2O₃ . 2SiO₂ Al2O₃ . 2SiO₂ Al2O₃ . SiO₂ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Mixing of ground refractory material and water is done in a __________ mill. Pug Rod Ball Tube Pug Rod Ball Tube ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High porosity refractory bricks have Better thermal spalling resistance Poor heat conductivity & low strength All of these Poor resistance to the peneration of molten slag, metal & flue gases Better thermal spalling resistance Poor heat conductivity & low strength All of these Poor resistance to the peneration of molten slag, metal & flue gases ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum alumina content in high alumina refractory can be as high as __________ percent. 30 90 70 50 30 90 70 50 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity of fireclay refractories is __________ percent. 35-50 43961 25-35 44129 35-50 43961 25-35 44129 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Graphite or carbon refractories Are not resistant to corrosion by slag Exhibit high shrinkage on thermal treatment Should be used in neutral or reducing atmosphere Exihibit wetting characteristics Are not resistant to corrosion by slag Exhibit high shrinkage on thermal treatment Should be used in neutral or reducing atmosphere Exihibit wetting characteristics ANSWER DOWNLOAD EXAMIANS APP
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