Product description： Adding zirconia fine powder to the high alumina brick batching, the solid solution of zirconia and alumina is changed during the high temperature sintering process, and small microcracks are formed, thus changing the internal structure of the product and improving the suddenly-changing temperature resistance of the product. compared with the general high alumina brick, The thermal shock resistance of the product has been improved by about three times. At the same time, the high temperature resistance、wear resistance and compactness of the product has also been greatly improved. It is widely used in many high temperature industrial furnaces.Index:ItemJB70JB75JB80JB85Al2O3 ≥ %70758085Fe2O3 ≤ %1.51.51.51.5ZrO2 ≤ %6.0——————Refractoriness ℃——179017901790Apparent porosity %22222222Bulk density g/cm32.552.552.72.7Cold crushing strength Mpa60606070Refractoriness under load T2,℃1470150015501550Reheating linear change 1500℃×2h,%——0.1～–0.30.1～–0.30.1～–0.3Thermal shock resistance, times20303030Remarks——Contain andalusiteProduct characteristics: Adding Zircon Sand to high aluminum bricks, which changes the mineral structure of the original product, and improves the suddenly-changing temperature resistance of the product by more than two times. At the same time, it also improves the working temperature and wear resistance of the product. Application: As a kiln furniture product, the product is widely used in heating furnace, annealing furnace, cement kiln and lime kiln.
View Original Size
