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Refractory Technology

Refractory Technology
Dolomite bricks have good resistance to attack by

Iron oxide
Molten steel
Lime slag
None of these

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Refractory Technology
Chromite refractories are used in

Neither A nor B
Between acid & basic linings in basic open hearth furnaces to prevent their chemical action with each other
Both A & B
Bottom of soaking pits

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Refractory Technology
Grog

Contains both alumina and silica
All of these
Is a non-plastic material
Iscrushed firebrick

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Refractory Technology
Bauxite calcining rotary kilns are lined with __________ bricks.

Fireclay
Corundum
Carbon
85% alumina

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Refractory Technology
Cold crushing strength of a refractory does not depend upon its

Composition
Firing temperature
Shape
Texture

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Refractory Technology
RUL of refractories depends on the

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

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