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Refractory Technology

Refractory Technology
Sillimanite is a __________ refractory.

Neutral
Insulating
High alumina
Basic

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Refractory Technology
Zirconia refractory

Has poor electrical conductivity at high temperature
Can not be used as an insulator
Is produced from baddeleyite
Does not react with basic slags

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Refractory Technology
Ceramic recuperators used for waste heat recovery from high temperature flue gas going out of the furnace is made of

Fireclay
Silicon carbide
Corrundum
Siliceous fireclay

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Refractory Technology
__________ nozzles are used in continuous casting of steel,

Zircon
Carborundum
Thoria
Beryllia

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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
Armouring
Buckstay
Baffle

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Refractory Technology
Presence of MgO in alumino-silicate refractories __________ its refractoriness.

Does not affect
Either A or B; depends on its quantity
Lowers
Increases

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