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Refractory Technology

Refractory Technology
Colour of fireclay bricks is

Black
Yellow
None of these
Light buff to reddish buff

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Refractory Technology
Vacuum steel degassing units are lined with

High alumina bricks
Silica bricks
Graphite blocks
Low duty firebricks

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Refractory Technology
Maximum alumina content in high alumina refractory can be as high as __________ percent.

30
50
90
70

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Refractory Technology
RUL of refractories depends on the

All of these
Physical structure
Presence of impurities like iron & alkali
Chemical composition

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Refractory Technology
Refractories are dried in the

Sun
Rotary kilns
None of these
Tunnel kilns

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Refractory Technology
Silica refractories are not used in

Coke oven walls
Dome and upper portion of B.F. stoves
Beehive coke ovens
Open hearth furnace roof

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MORE MCQ ON Refractory Technology

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