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Refractory Technology

Refractory Technology
Rotary kilns meant for calcination of limestone are lined with chrome magnesite in __________ zone.

Burning
Preheating
All of these
Cooling

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Refractory Technology
Magnesite bricks are used in those parts of furnaces, which are

None of these
Subjected to high load
Required to resist corrosive basic slag
Subjected to temperature fluctuation

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Refractory Technology
High alumina refractories are used in the

Dome of blast furnace stoves
All of these
Electric arc furnace roof
Glass melting furnaces

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Refractory Technology
Refractory bricks having lower porosity have

Low heat capacity
Low thermal conductivity
High insulating properties
Greater strength

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Refractory Technology
Which of the following consumes the maximum tonnage of refractories annually in an integrated steel plant?

Rotary lime kiln
Ceheating furnace
Soaking pits
L.D. converter

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Refractory Technology
With increase in the alumina content, the refractoriness of high alumina refractories

Decreases
Remains same
Increases
May increase or decrease

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