Chemical Engineering :: Refractory Technology
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Carbon bricks are not used in the lining of the
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Pick out the wrong statement.
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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.
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Chrome magnesite bricks are
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A.
Fluxing material like lime is added in clay to reduce the vitrification temperature.
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B.
Main constituents of clay are alumina and silica.
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C.
Addition of sand in ceramic materials makes it non-plastic, increases its fusion point and reduces its shrinkage on burning.
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D.
Vitrification of fireclay material is done to increase its porosity.
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