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Refractory Technology

Refractory Technology
Fireclay bricks are used in the

All of these
Furnaces allowed to cool frequently
Flues
Chimney linings

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Refractory Technology
Refractoriness under loads (RUL) is quite close to the fusion temperature (PCE) for __________ bricks.

Dolomite
Silica
Fireclay
Very low alumina

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Refractory Technology
Magnesite refractories are used for the construction of those furnaces, which are

Not required to resist the corrosive action of basic slag
Not subjected to fluctuation in temperature
Both (b) and ©
Used for raising & maintaining high temperature

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Refractory Technology
PCE value (Segar cone) of superduty refractories is more than 33, which is equivalent to a temperature of __________ °C.

1520
1630
1730
1670

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Refractory Technology
High density refractory bricks have lower

Fusion point
Thermal conductivity
Spalling resistance
Slag penetration resistance

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Refractory Technology
Which is an acidic refractory?

Magnesite
Fireclay
Dolomite
Chrome magnesite

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