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Refractory Technology

Refractory Technology
Which is not an alumino-silicate refractory?

High alumina bricks
Fireclay bricks
Mullite bricks
Tar dolomite bricks

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Refractory Technology
Periclase is

MgCO₃
ZrSO₄
Crystalline form of MgO
Amorphous magnesite

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Refractory Technology
High alumina refractory compared to fireclay bricks have

High resistance to thermal shock and creep
Less load bearing capacity
Low refractoriness
Less resistance to slag attack

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Refractory Technology
Which of the following is not an acidic refractory?

Bauxite bricks
Silica bricks
Magnesia bricks
Fireclay bricks

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Refractory Technology
With increase in the alumina content, the refractoriness of high alumina refractories

Increases
Decreases
May increase or decrease
Remains same

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Refractory Technology
Firing of refractory brick is done to

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

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