Refractory Technology Which is required in an insulating refractory? High thermal conductivity Both A & B Low porosity Neither A nor B High thermal conductivity Both A & B Low porosity Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spalling resistance of a refractory can not be increased by Increasing its porosity Making it denser Decreasing its thermal co-efficient of expansion Using a coarser grog during its manufacture Increasing its porosity Making it denser Decreasing its thermal co-efficient of expansion Using a coarser grog during its manufacture ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fusion temperature of pure silica (SiO₂) is __________ °C. 1350 2570 2800 1715 1350 2570 2800 1715 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks is not used for lining the Gas producer Cupola Bottom of hot metal mixer Roof of open hearth furnace Gas producer Cupola Bottom of hot metal mixer Roof of open hearth furnace ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Basic bricks are not made of Fireclay Foresterite Magnesite Chromite Fireclay Foresterite Magnesite Chromite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ bricks are used in the burning zone of a cement rotary kiln. High alumina Thoria Fireclay Silicon carbide High alumina Thoria Fireclay Silicon carbide ANSWER DOWNLOAD EXAMIANS APP
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