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Refractory Technology

Refractory Technology
Outer combustion chamber of blast furnace stove is lined with __________ bricks.

Fireclay
Silica
Zirconia
Chrome magnesite

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Refractory Technology
Refractoriness under load (RUL) is the most important property for the refractory bricks

Used in the roof of the furnace
Used for furnace insulation
At the hearth bottom of the furnace on which stock is placed
None of these

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Refractory Technology
Which is not a high alumina refractory?

Bauxite
Dolomite
Corrundum
Mullite

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Refractory Technology
Ramming masses are used for

Obtaining monolithic working faces
Both A & B
Repairing construction of various furnace parts
Neither A nor B

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Refractory Technology
Chromite refractories are

Acidic refractory
Basic refractory
Fired at a temperature of 600°C only
Neutral refractory

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Refractory Technology
Which is the stable form of silica below 870°C ?

Cristobalite
Quartz
None of these
Tridymite

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