Tabular Alumina is an aggregate of high-purity, well-sintered ( ≥ 1900℃) crystalline alpha alumina, it has coarse crystal, well-developed a-Al2O3 crystal structure . Tabular Alumina has high temperature volume stability, low water absorption, low apparent porosity and impurities, and high thermal thock resistance. Tabular Alumina can be used as the main component in aluminium-carbon, widely
tabular corundum is rapidly fired at a high temperature above 1900°C and then crystallized α-Al2O3. Unlike ordinary corundum, accelerators such as MgO and CaO are added. It does not contain any additives, so tabular alumina has the following characteristics. ① The composition is well-developed α-Al2O3 crystal; ② The crystals of α-Al2O3 are coarse, the median diameter range
Tabular alumina has good heat resistance and good bulk temperature thermal shock capabilities. The crystal staggered plate shape, to increasing the mechanical strength of the particles Physical and Chemical Properties: Style(Item) chemical index physical index Al2O3(%) SiO2(%) Fe2O3(%) Na2O(%) Volume density (g/cm3) water absorption(%) apparent porosity(%) 0-1mm 1-3mm 3-5mm
Product Details Tabular alumina is a kind of pure sintered alumina,which is sintered and completely shrink without adding any additive ,with coarse crystals and well-developed α- Al2O3 crystal structure.The tabular crystal structure is characterized by narrow pores,with more closed porosity, almost the same apparent porosity compare with fused corundum ,high purity, good stability volume density
Tabular alumina is pur α-alumina resulting from intensive sintering at temperatures exceeding 1,800 °C, without sintering additives. Low temperature expansion and high heat resistance can be explained by the microstructure specifics: low effective porosity and large sizes of crystals with closed spherical pores resulting from intensive sintering. Style(Item) chemical index
The tabular alumina powder takes the imported industrial alumina powder as the main material. Through special processing, grain growth direction is controlled by high temperature, the particles appears the unique plate-like structure, mohs hardness is up to 9 degree, it has the strong grinding force, not easy to produce scratches. Physical and Chemical Properties:
