Refractory Technology
Cermets are combination of ceramic and metallic materials due to which they have high strength & resistance to high temperature. Cermets are used in the

Nuclear reactors, missiles & space crafts
Insulation of high temperature furnaces
Roof of electric furnaces
Hearth of the blast furnace

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Refractory Technology
Tar bonded dolomite bricks

Are used in outer lining of L.D. converters
Have poorer hydration resistance than pitch bonded bricks
Are stored under controlled temperature & humidity to avoid hydration
All of these

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