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REFRACTORY TECHNOLOGY

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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Refractory Technology
The linear thermal expansion of __________ bricks upto 1000 °C is very low of the order of ≤ 0.5 percent.

Fireclay
Magnesite
Corundum
Silica

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Refractory Technology
With decrease in porosity, the __________ of the refractories decreases.

Strength
None of these
Spalling resistance
Thermal conductivity

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Refractory Technology
Tar dolomite bricks are used in the

All of these
Electric furnaces
Basic Bessemer converter
Basic open hearth furnace

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Refractory Technology
Chromite refractories are used in

Both A & B
Between acid & basic linings in basic open hearth furnaces to prevent their chemical action with each other
Bottom of soaking pits
Neither A nor B

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