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Refractory Technology

Refractory Technology
Refractories are dried in the

None of these
Sun
Rotary kilns
Tunnel kilns

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Refractory Technology
With increasing alumina content, the fusion point of high alumina refractories

Decreases
Remains constant
Increases
May increase or decrease ; depends on its alumina content

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Refractory Technology
Outer combustion chamber of blast furnace stove is lined with __________ bricks.

Silica
Zirconia
Chrome magnesite
Fireclay

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Refractory Technology
Segar cones are used for the determination of __________ of refractories.

Electrical conductivity
Spalling resistance
Softening temperature
Resistance to slag attack

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Refractory Technology
Grog

Is a non-plastic material
Iscrushed firebrick
Contains both alumina and silica
All of these

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Refractory Technology
Si percentage in silica refractories used in the walls of coke oven is about

95
80
45
60

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