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Refractory Technology

Refractory Technology
Cold crushing strength of refractories depends upon its

Firing temperature
Composition
Texture
All of these

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Refractory Technology
Mullite is chemically represented by

Al2O₃ . SiO₂
2Al2O₃ . 3SiO₂
Al2O₃ . 2SiO₂
3Al2O₃ . 2SiO₂

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Refractory Technology
Chemically, mullite refractories is

ZrSO₄
3Al2O₃.2SiO₂
ThO₂
Al2O₃

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Refractory Technology
Chromite refractories are used in

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

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Refractory Technology
Machine moulding of dry mixture of refractories requires a pressure of the order of __________ kg/cm².

10
100
500
1000

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Refractory Technology
__________ bricks are used in the burning zone of a cement rotary kiln.

Fireclay
Silicon carbide
Thoria
High alumina

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