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REFRACTORY TECHNOLOGY

Refractory Technology
Because of its very high refractoriness of the order of __________ °C, silicon carbide refractories are used in zinc smelting furnace, muffle furnace and for supporting the wares in tunnel kilns.

2700
2400
1800
2200

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Refractory Technology
Fireclay bricks are used in the

All of these
Furnaces allowed to cool frequently
Chimney linings
Flues

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Refractory Technology
Skull is not formed on the carbon blocks in the hearth of a blast furnace, when it becomes cold, becaus of its

High crushing strength
None of these
High thermal conductivity
Non-wetting characteristic

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Refractory Technology
'Spinel', a refractory mineral is chemically represented as

MgAl2O₃.2H₂O
MgAl2O₄
MgAl2O₃
MgSO₄

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Refractory Technology
Fireclay bricks are not used in the

By-product coke oven walls
Coke oven regenerators
Beehive coke oven
Combustion chamber of B.F. stoves

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