Refractory Technology
Permeability of bricks is a measure of the

Refractoriness
Melting point
Rate at which a fluid will pass through the pores
Expansion during heating

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Refractory Technology
Tar bonded dolomite bricks

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

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