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REFRACTORY TECHNOLOGY

Refractory Technology
Which is a basic refractory?

Chrome magnesite
Silica
Fireclay
None of these

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Refractory Technology
Which one expands on heating?

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

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Refractory Technology
Fireclay bricks are never used in the

Coke oven walls
Lead blast furnace
Beehive oven
Zinc roaster

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Refractory Technology
High density refractory bricks have lower

Thermal conductivity
Spalling resistance
Fusion point
Slag penetration resistance

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Refractory Technology
Zircon refractories have

High spalling resistance
All of these
Low co-efficient of expansion
High RUL (1600°C) and refractoriness (> 2000°C)

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