Refractory Technology Vacuum steel degassing units are lined with Silica bricks High alumina bricks Graphite blocks Low duty firebricks Silica bricks High alumina bricks Graphite blocks Low duty firebricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling resistance of a refractory can not be increased by Increasing its porosity Decreasing its thermal co-efficient of expansion Making it denser Using a coarser grog during its manufacture Increasing its porosity Decreasing its thermal co-efficient of expansion Making it denser Using a coarser grog during its manufacture ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Presence of MgO in alumino-silicate refractories __________ its refractoriness. Does not affect Increases Either A or B; depends on its quantity Lowers Does not affect Increases Either A or B; depends on its quantity Lowers ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks are used in the Furnaces allowed to cool frequently All of these Chimney linings Flues Furnaces allowed to cool frequently All of these Chimney linings Flues ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High refractorinness of refractory bricks means, that it has a Low porosity High resistance to fusion Low spalling resistance High spalling resistance Low porosity High resistance to fusion Low spalling resistance High spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Pure bauxite is the best raw material for the manufacture of high alumina refractories, in which maximum alumina content can be as high as __________ percent. 90 70 80 55 90 70 80 55 ANSWER DOWNLOAD EXAMIANS APP
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