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Refractory Technology

Refractory Technology
Si percentage in silica refractories used in the walls of coke oven is about

95
80
60
45

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Refractory Technology
Which property is important for bricks used in the combustion chamber & dome of blast furnace stoves?

High refractoriness
All of these
High strength and density
High resistance to spalling

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Refractory Technology
Silica bricks are never used for lining the

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

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Refractory Technology
Ramming masses are used for

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

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Refractory Technology
RUL of refractories depends on the

Chemical composition
All of these
Physical structure
Presence of impurities like iron & alkali

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Refractory Technology
Roof of a basic electric furnace is made of __________ bricks.

Chromite
Superduty fireclay
Silica
None of these

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