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Refractory Technology

Refractory Technology
Refractory materials are never used in the construction of

Pressure vessels
Ovens & retorts
Segar cones
Orton cones

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

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

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Refractory Technology
Most Cermets, which normally have high thermal conductivity and high thermal shock resistance, comprises of ceramic & metallic components of __________ percent respectively.

20 and 80
50 and 50
80 and 20
60 and 40

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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
Porosity of fireclay refractories is __________ percent.

25-35
43961
44129
35-50

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Refractory Technology
Conversion of silica mineral to cristobalite is accompanied by reduction in its

Neither A nor B
Specific gravity
Both A & B
Volume

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