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Refractory Technology

Refractory Technology
Refractory materials are never used in the construction of

Pressure vessels
Ovens & retorts
Segar cones
Orton cones

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Refractory Technology
Which one expands on heating?

Both A & B
Neither A nor B
Silica bricks
Fireclay bricks

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

Fireclay
Tar dolomite
Silica
Carbon

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

1550
1450
1300
1150

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Refractory Technology
Dolomite bricks have good resistance to attack by

Iron oxide
Lime slag
None of these
Molten steel

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Refractory Technology
Firing of refractory brick is done to

Form ceramic bonds necessary for development of high crushing strength in the finished product
All of these
Dehydrate the dried refractory
Develop stable mineral forms in them

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