Refractory Technology Which is not an acidic refractory? Carbon black High alumina refractory Fireclay Silica Carbon black High alumina refractory Fireclay Silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Test piece for determination of RUL of a refractory is heated in a/an Electric furnace Oxidising atmosphere Neutral atmosphere Reducing atmosphere Electric furnace Oxidising atmosphere Neutral atmosphere Reducing atmosphere ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Grog addition in fireclay during brick manufacture is done to Reduce its shrinkage on heating Enhance the strength of fired refractories All of these Impart greater spalling resistance Reduce its shrinkage on heating Enhance the strength of fired refractories All of these Impart greater spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Highest melting (m.p = 3070°C) oxide refractory is Alumina Zirconia Magnesia Thoria Alumina Zirconia Magnesia Thoria ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which property of refractories is the most important for top section of the blast furnace? 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 Stability of volume at high temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content, the refractoriness of high alumina refractories Increases Decreases May increase or decrease Remains same Increases Decreases May increase or decrease Remains same ANSWER DOWNLOAD EXAMIANS APP
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