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Refractory Technology

Refractory Technology
Hot metal runner in blast furnace are lined with __________ bricks.

Fireclay
Silica
Magnesite
Carborundum

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Refractory Technology
Pyrometric cone equivalent (PCE) value (Segar cone) of 'superduty refractories' is more than 33 which corresponds to a temperature of __________ °C.

1630
1730
1670
1520

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Refractory Technology
Which is not an acidic refractory?

High alumina refractory
Fireclay
Carbon black
Silica

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Refractory Technology
Which is a neutral refractory?

Magnesia
Graphite
Magnesite chrome
Silica

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Refractory Technology
Permeability of bricks is a measure of the

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

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Refractory Technology
Magnesite bricks are used in those parts of furnaces, which are

Required to resist corrosive basic slag
Subjected to temperature fluctuation
None of these
Subjected to high load

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