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REFRACTORY TECHNOLOGY

Refractory Technology
Which is an acidic refractory?

Fireclay
Magnesite
Chrome magnesite
Dolomite

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Refractory Technology
Ferromagnetic ceramic material is not used in the

Television sets
Transformers
Thermal insulation
Magnetic switches

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Refractory Technology
Electrical resistor bars are made of

Silicon carbide
Zirconia
Graphite
Alumina

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Refractory Technology
Chrome magnesite brick is not used for lining the

Coke oven regenerator
Hearth of soaking pits
Bottom hearth of reheating furnace
Burning zone of limestone rotary kilns

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Refractory Technology
silicon carbide refractories have very low

None of these
Refractoriness (< 1700°C)
Resistance to thermal shock
Thermal conductivity

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