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nature : mainly refers to refractory clay brick (fireclay brick), is the most commonly used semi-acidic refractories. The refractory clay and good clinker burning, crushing, mixing, forming, having derived. Alumina is the general content of 30% -45%, good thermal stability, refractoriness 1580-1750 ° C Widely used in masonry furnaces, open hearth furnace and kiln, the tunnel kilns, furnaces, etc.. Firebrick standard specification is 230 mm × 113 mm × 65 mm.
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