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Refractory Technology

Refractory Technology
Bauxite calcining rotary kilns are lined with __________ bricks.

85% alumina
Corundum
Fireclay
Carbon

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Refractory Technology
__________ is not a single oxiderefractory.

None of these
Magnesia
Silicon carbide
Zirconia

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Refractory Technology
Roof of a basic open hearth furnace is lined with __________ bricks.

Fireclay
Dolomite
Silica
Magnesite

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Refractory Technology
Highest melting (m.p = 3070°C) oxide refractory is

Zirconia
Alumina
Thoria
Magnesia

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Refractory Technology
Refractory bricks with lower permeability is produced by using

All of these
Finer grog size
Higher moulding pressure
Higher firing temperature

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Refractory Technology
__________ bricks are used in the burning zone of a cement rotary kiln.

Thoria
Fireclay
Silicon carbide
High alumina

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