Fire Clay Brick

The main chemical components: Al2O3 content is 30%-48%,Website:http://www.chinadita.com, SiO2 content is 50%-65%, and a small number of alkali metals, metal oxides, etc. Its refractoriness is 1580-1750 °C, refractoriness under load is 1250-1450 °C, with good thermal resistance and strong ability to resist acid slag.Fire Clay Bricks is used for lower parts of regenerators, hot blast stove, furnaces of metallurgic, building material, glass, ferrous metal and so on.ItemIndexSK-30SK-32SK-34SK-35AL2O3 %   (≥)30353845Fe2O3 %   (≤)2.52.52.02.0Refractoriness(SK)30323435Refractoriness Under Load, 0.2MPa, (°C )1250130013501400Apparent Porosity (%)22-2622-2620-2420-22Bulk Density (g/cm³)1.9-2.01.95-2.12.1-2.22.15-2.22Cold Crushing Strength (MPa)20252530Thermal Expansion at 1000°C (%)0.80.60.60.5



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