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Refractory Technology

Refractory Technology
Silliminite (Al2O₃.SiO₂) refractory, which is a neutral refractory, is not used in

Glass melting furnace
Crucibles
Gas retorts
Pottery furnace

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Refractory Technology
Zirconia refractories are not used in

Lining high temperature ceramic kilns
High frequency induction furnaces in the form of inductors
Furnaces subjected to fluctuating temperature
Making sheaths for thermocouple

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Refractory Technology
Chrome magnesite bricks are

Neutral in nature
Made by mixing 30% chromite and 70% periclase
Acidic in nature
Having higher RUL than silica bricks

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Refractory Technology
Periclase refractory contains mainly

Al2O₃
CaO
MgO
SiO₂

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Refractory Technology
Which refractory must have controlled atmosphere (temperature and humidity) for its safe storage?

Magnesite bricks
Fireclay bricks
Mullite bricks
Tar bonded dolomite bricks

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Refractory Technology
Outer combustion chamber of blast furnace stove is lined with __________ bricks.

Silica
Zirconia
Chrome magnesite
Fireclay

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