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Refractory Technology

Refractory Technology
Which furnace consumes maximum refractory annually in an integrated steel plant?

Soaking pit
Coke ovens
L.D. converter
Blastfurnace

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Refractory Technology
With increase in the alumina content in firebricks, its fusion point (refractoriness)

Decreases
Increases
Decreases linearly
Remains unchanged

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Refractory Technology
An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture?

Chemically prepared foam
Sand
Cork
Saw dust

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Refractory Technology
Refractoriness of a typical silica brick corresponds to Segar cone number, '32', which is equivalent to a temperature of __________ °C.

1915
1380
1520
1710

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Refractory Technology
High porosity refractory bricks have

Better thermal spalling resistance
Poor heat conductivity & low strength
Poor resistance to the peneration of molten slag, metal & flue gases
All of these

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Refractory Technology
Maximum safe working temperature for fireclay bricks is about __________ °C.

1450
1550
1150
1300

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