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Refractory Technology

Refractory Technology
__________ is the measure of the strength of refractory under the combined effect of temperature & load.

RUL
Specific gravity
Thermal conductivity
Porosity

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Refractory Technology
Dry mix hydraulic compositions of refractory aggregates with suitable bonding materials are called refractory

Castables
Mortars
Cements
None of these

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Refractory Technology
Which is not a high alumina refractory?

Dolomite
Mullite
Corrundum
Bauxite

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Refractory Technology
Chemically, mullite refractories is

ZrSO₄
ThO₂
3Al2O₃.2SiO₂
Al2O₃

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Refractory Technology
Zirconia refractories are not used in

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

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Refractory Technology
Fireclay bricks are never used in the

Lead blast furnace
Coke oven walls
Beehive oven
Zinc roaster

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