Clay Bricks
Description:
Clay bricks is made from high-purity refractory clays, the temperature of use range from 1100℃ to 1700℃ and each grade is formulated to meet specific thermal and physical requirements.
Features:
Clay bricks has the low thermal conductive, low heat storage, good thermal insulation, enable the use of thin-walled constructions. The good alumina contents confer good refractoriness, low iron and alkali fluxcontent contributes to their stability to reducing atmosphere.
Application:
Clay bricks are widely used in glass furnace, blast furnace, hot-air furnace, cement furnace, chemical furnace and other heat-engineering equipments.
Specification:
Item | General High-Alumina Bricks | General Fire Clay Bricks | |||||||||
Brand | LZ-75 | LZ-65 | LZ-55 | N1 | N2a | N2b | N3a | N3B | N4 | N5 | N6 |
Al2O3 % Min | 75 | 65 | 55 | 36-48 | |||||||
Fe2O3 % Max | 2 | ||||||||||
Refractoriness ℃ Min | 1790 | 1770 | 1770 | 1750 | 1730 | 1730 | 1710 | 1710 | 1690 | 1670 | 1580 |
Reheating Linear Change 1500℃ 2h % PLC | +0.1 -0.4 | 1400℃, 2h% | 1350℃,2h% | ||||||||
+0.1 -0.4 | +0.1 -0.5 | +0.2 -0.5 | +0.2 -0.4 | +0.2 -0.5 | +0.2 -0.5 | +0.2 -0.5 | |||||
Refractoriness Under Load (0.2MPa) ℃ PUL Min | 1520 | 1500 | 1470 | 1400 | 1350 | 1320 | 1300 | ||||
Apparent Porosity % Max | 23 | 23 | 22 | 22 | 24 | 26 | 24 | 26 | 24 | 26 | 28 |
Cold Crushing Strength Mpa Min | 53.9 | 49 | 44.1 | 30 | 25 | 20 | 20 | 15 | 20 | 15 | 15 |
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