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Refractory Technology

Refractory Technology
Maximum safe working temperature for fireclay bricks is about __________ °C.

1450
1550
1300
1150

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Refractory Technology
Carbon bricks are not used in the lining of the

Combustion chamber of blast furnace stoves
Highly chemical resistant equipments
Electric furnaces
Blast furnace hearth

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Refractory Technology
Chrome magnesite is not used in the

All of these
Inner lining of L.D. converter
Aluminium melting furnaces
Wear out lining of steel melting furnaces

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Refractory Technology
Refractoriness/fusion points of 'superduty' refractories is __________ °C.

1630-1670
> 2000
1520-1630
> 1730

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Refractory Technology
Permeability of bricks is a measure of the

Expansion during heating
Refractoriness
Rate at which a fluid will pass through the pores
Melting point

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

Bauxite
Periclase
Corrundum
Carborundum

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