Fire bricks ( chamotte refractory bricks )are alumina silicate bricks with the refractoriness of SK 32-34 and contain 35-40% alumina. The bricks are made from various raw material s of fire clay, calcined chamotte, soft clay. We manufacture chamotte bricks using thorough quality control. Shapes and properties depend unpon sevice conditions, becuase the bricks have low porosity, high strength, good resistance to thermal spalling and abrasion and to creep, they are applied for the linings of various incinerators, reheating furnaces etc. ItemSK-34SK-33SK-32Refractoriness(SK)343332Apparent Porosity(%)232426Bulk Density(g/cm3)2.202.152.00Cold Crushing Strength(MPa)353020Thermal Linear Expansion(%)@ 1000℃0.60.60.6Permanent Linear Change(%)@ 1400℃X2hrs±0.3±0.5±0.5Refractoriness under Load(℃)@0.2MPa135013001250Chemical Composition(%)Al2O3403835Fe2O32.02.23.0Main Applications-Various Incinerator-Reheating Furnace-Blast furnace-Rotary& Shaft Kiln-General Industrial Funace etc.Package: The bricks are always palletized and shrink wrapped, usually 1.2~1.5MT per pallet.Delivery time: within two weeks after receive the depositDelivery port:Qingdao port