Refractory Technology Roof of a basic open hearth furnace is lined with __________ bricks. Silica Fireclay Magnesite Dolomite Silica Fireclay Magnesite Dolomite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories have low resistance to Disintegration on sudden change of temperature Attack by basic slag Abrasion Both B and C Disintegration on sudden change of temperature Attack by basic slag Abrasion Both B and C ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increasing alumina content, the fusion point of high alumina refractories Remains constant May increase or decrease ; depends on its alumina content Increases Decreases Remains constant May increase or decrease ; depends on its alumina content Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Graphite or carbon refractories 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 Exihibit wetting characteristics Exhibit high shrinkage on thermal treatment Are not resistant to corrosion by slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Carbon refractories have very high Wetting characteristics Refractoriness Both B and C Thermal conductivity Wetting characteristics Refractoriness Both B and C Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chemically, mullite refractories is ZrSO₄ 3Al2O₃.2SiO₂ Al2O₃ ThO₂ ZrSO₄ 3Al2O₃.2SiO₂ Al2O₃ ThO₂ ANSWER DOWNLOAD EXAMIANS APP
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