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      Active α-Al2O3 Micro-powders
      Addtime:2011/10/21 15:36:17   Hit:0   Add to Favorites

              Active α-Al2O3 Micro-powders, produced by our company, is calcined in a unique firing process by using excellent alumina as its raw material, selected composite mineralizing agents, and adopted superfine grinding technology. It has good properties such as, high inversion rate, good activity, small water demand, good fluidness, high bulk density, excellent thermal strength etc. It is an excellent filling agent and superfine powder coagulation binder for producing monolithic refractories. The product has been used in numerous famous manufacturers, and has gained good reputations.

             We can make all kinds of Activated α-Al2O3 Micro-powders with different properties according to the customer's requirement.
      Main crystal phase : α Phase ≥95%
      Chemical analysis: AL2O3≥98.5% , SiO2≤ 0.2%, Fe2O3≤ 0.2%
      Fineness:D50≤0.7um( type A ) , D50≤2um ( type B)
      True specific gravity:≥3.92g/cm3
      α-AL2O3 Micro powders Fineness Test upshot
      Sam dens: 3.95(g/cc)    Liq dens: 1(g/cc)       
      Liq visc: 0.0096(ccp)    sed.height:0.5(cm)
      D50=0.54 um        Dstoks=0.85 um      D03=0.17 um
      D97=3.03 um        D10=0.23 um        D90=1.88um
      D25=0.33 um        D75=0.97 um        S. area=0 cm2/g

      Type
      A
      B
                                        Name
       
      Characteristics
      Active   α-AL2O3    Micro-powders
      Active α-AL2O3 Micro-powders
      AL2O3
      ≥98.5
      ≥98.5
      SiO2%
      ≤0.15
      ≤0.15
      Fe2O3%
      ≤0.20
      ≤0.15
      D50
      ≤0.7um
      ≤2um
      Fineness
      (%)
      ≤1 um
      ≥60%
      ≥30%
      ≤2um
      ≥90%
      ≥50%
      ≤5um
      100%
      90%
      ≤10um
      -
      100%
      True specific gravity(g/cm3
      ≥3.92
      ≥3.92
      α-AL2O3phase
      ≥95%
      ≥95%

      Marks: we also can producing different grain size according to the customer inquiry such as D50≤5μm, D50≤10μm etc.