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.

2200
2400
1800
2700

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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
All of these
Are used in outer lining of L.D. converters

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