Refractory Technology
Which of the following bricks should not be used, if the furnace is to be used intermit-tantly?

Sillimanite
Silicon carbide bricks
Silica bricks
Firebricks

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Refractory Technology
Tar bonded dolomite bricks

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

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