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Refractory Technology

Refractory Technology
Which is not an acidic refractory?

Silica
Fireclay
High alumina refractory
Carbon black

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Refractory Technology
In panel test for spalling resistance, the average face temperature of panel assembly is maintained at __________ °C for 24 hours.

700
1600
1000
2000

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Refractory Technology
Refractories are dried in the

Sun
Tunnel kilns
None of these
Rotary kilns

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Refractory Technology
Chrome magnesite brick is not used for lining the

Hearth of soaking pits
Bottom hearth of reheating furnace
Coke oven regenerator
Burning zone of limestone rotary kilns

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

Increases
Remains unchanged
Decreases linearly
Decreases

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

Increases
May increase or decrease
Remains same
Decreases

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