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Refractory Technology

Refractory Technology
The main raw material for manufacture of silicon carbide refractories is

Carborundum
Bauxite
Corrundum
Periclase

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Refractory Technology
Chemically, mullite refractories is

ThO₂
3Al2O₃.2SiO₂
ZrSO₄
Al2O₃

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

Texture
Composition
Firing temperature
Shape

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Refractory Technology
RUL of refractories depends on the

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

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Refractory Technology
Refractory materials are never used in the construction of

Orton cones
Pressure vessels
Segar cones
Ovens & retorts

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Refractory Technology
Porosity of fireclay refractories is __________ percent.

44129
43961
35-50
25-35

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