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Refractory Technology

Refractory Technology
Carbon refractories have very high

Refractoriness
Wetting characteristics
Both B and C
Thermal conductivity

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Refractory Technology
Fireclay bricks are never used in the

Coke oven walls
Beehive oven
Zinc roaster
Lead blast furnace

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Refractory Technology
Silica bricks are never used for lining the

Roof of open hearth furnace
Dome of blast furnace stoves
Beehive coke ovens
By-product coke ovens

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Refractory Technology
Permeability of bricks is a measure of the

Expansion during heating
Refractoriness
Rate at which a fluid will pass through the pores
Melting point

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Refractory Technology
Semi-silica bricks compared to silica bricks have

Less fusion point
Both A & B
Neither A nor B
Better spalling resistance

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Refractory Technology
High alumina refractory compared to fireclay bricks have

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

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