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Refractory Technology

Refractory Technology
Ferromagnetic ceramic material is not used in the

Transformers
Thermal insulation
Magnetic switches
Television sets

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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
Roof of electric furnaces
Insulation of high temperature furnaces
Nuclear reactors, missiles & space crafts

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Refractory Technology
A steel member used in the furnace construction to take the thrust of the brickwork is called

Breast wall
Buckstay
Armouring
Baffle

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Refractory Technology
Hot blast main (carrying air at 1000°C) in blast furnace are lined with __________ bricks.

Fireclay
Magnesite
Silica
Zirconia

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Refractory Technology
Which of the following is not a high alumina refractory material?

Periclase
Kyanite
Sillimanite
Diaspore

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Refractory Technology
Bottom of basic open hearth furnace are constructed of

Silicon carbide bricks
Porous fireclay bricks
Semi-silica bricks
Dead burnt magnesite ramming mass

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