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Fireclay bricks are produced on the basis of different domestic qualities of fired fireclay and dried clays. Fireclay bricks are used for linings of thermal aggregates of 1400℃ working temperature. They are made by mechanical pressing .These products are used in the ceramic industry for linings of tunnel and chamber furnace, steam boiler furnaces, certain parts of lime furnaces, etc.
Index Products Series Al2O3% Fe2O3 (Max.)% R2O (Max.)% Na2O(Max.)% Apparent Porosity (Min.)MPa Cold Crushing Strength (Min.)MPa Refractoriness (Min.)℃ Reheating Linear Change% Refractoriness Under Load (0.2MPa) (Min.)℃ Fireclay Bricks N-1 22 30 1750 1400 N-2a 24 25 1730 1400℃×2h+0.1-0.5 1350 N-2b 26 20 1730 1400℃×2h+0.2-0.5 N-3a 24 20 1710 1350℃×2h+0.2-0.5 1320 N-3b 26 15 1710 1350℃×2h+0.2-0.5 n-4 24 20 1691 1350℃×2h+0.2-0.5 1300 Kaolinite Bricks For Blast Furnace ZGN-42 42(Min.) 1.6 15 58.8 1750 1450℃×3h 0-0.2 1450 GN-42 42(Min.) 1.7 16 49.0 1750 1450℃×3h 0-0.3 1430 Fireclay Bricks For Glass Oven BN-40a 40Min.) 1.5 18 49 1400℃×2h+0 -0.4 1450 BN-40b 40Min.) 1.8 18 34.3 1400℃×2h+0 -0.4 1400 FXN-40 40Min.) 1.5 1.2 0.5 18 42 1400℃×2h+0.1-0.1 Low Porosity Fireclay Bricks For Glass Oven N-14 42-48 1.6 14 49 1750 1400℃×2h+0.1-0.5 1430 N-15 42-48 1.8 15 39.2 1750 1400℃×2h+0.1-0.5 1420 N-16 42-48 2 16 39.2 1750 1400℃×2h+0.1-0.5 1400 N-18 42-48 2 18 39.2 1750 1400℃×2h+0.1-0.5 1400
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