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Refractory Technology

Refractory Technology
Refractory materials are never used in the construction of

Orton cones
Ovens & retorts
Segar cones
Pressure vessels

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Refractory Technology
__________ bricks should not be used in oxidising atmosphere.

Tar dolomite
Silica
Carbon
Fireclay

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Refractory Technology
Periclase refractory contains mainly

CaO
MgO
SiO₂
Al2O₃

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Refractory Technology
Silica bricks have low spalling resistance below 600°C, due to its

Very high thermal conductivity
High thermal diffusivity
High co-efficient of expansion upto this temperature
Low refractoriness

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

Fireclay
Silica
Dolomite
Very low alumina

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Refractory Technology
Maximum safe working temperature for fireclay bricks is about __________ °C.

1300
1150
1550
1450

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MORE MCQ ON Refractory Technology

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