Refractory Technology __________ of carbon blocks in the hearth of blast furnace helps in avoiding skull formation, when it becomes cold. High thermal conductivity Non-wetting characteristics High density Low porosity High thermal conductivity Non-wetting characteristics High density Low porosity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High porosity refractory bricks have Poor resistance to the peneration of molten slag, metal & flue gases Better thermal spalling resistance All of these Poor heat conductivity & low strength Poor resistance to the peneration of molten slag, metal & flue gases Better thermal spalling resistance All of these Poor heat conductivity & low strength ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Panel test determines the __________ of refractories. Spalling resistance Fusion point Slag penetration resistance Refractoriness under load (RUL) Spalling resistance Fusion point Slag penetration resistance Refractoriness under load (RUL) ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is an acidic refractory? Chrome magnesite Magnesite Dolomite Fireclay Chrome magnesite Magnesite Dolomite Fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content, the refractoriness of high alumina refractories Decreases Increases May increase or decrease Remains same Decreases Increases May increase or decrease Remains same ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica refractories are not used in Beehive coke ovens Open hearth furnace roof Coke oven walls Dome and upper portion of B.F. stoves Beehive coke ovens Open hearth furnace roof Coke oven walls Dome and upper portion of B.F. stoves ANSWER DOWNLOAD EXAMIANS APP
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