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Refractory Technology

Refractory Technology
Periclase refractory contains mainly

SiO₂
CaO
Al2O₃
MgO

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Refractory Technology
Silica bricks are never used for lining the

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

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Refractory Technology
Basic bricks are not made of

Fireclay
Chromite
Magnesite
Foresterite

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Refractory Technology
Silicon carbide refractories are used in the

Muffle furnace
All of these
Ceramic recuperators
Zinc smelting furnace

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Refractory Technology
Cermets are combination of ceramic and metallic materials due to which they have high strength & resistance to high temperature. Cermets are used in the

Hearth of the blast furnace
Nuclear reactors, missiles & space crafts
Roof of electric furnaces
Insulation of high temperature furnaces

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Refractory Technology
PCE value (Segar cone) of superduty refractories is more than 33, which is equivalent to a temperature of __________ °C.

1630
1730
1670
1520

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