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      Alumina Bubble
      Addtime:2011/10/21 15:38:39   Hit:0   Add to Favorites

      Alumina Bubble

            The alumina bubble produced by our company is a hollow spherulitic heat-insulating meterial, which is made by electrofused method. It is noted for its light-weight, heat-resistance, close pore. It is an ideal filler for high-temperatuerfurnaces and excellent aggregate of light weight castable refractory.it is also and ideal heat-insulating and energy-saving refractory.
                                              Index
      Properties
      Alumina Bubble
      Guarantee value
      Typical Value
       
      Chemical
      composition
      Al2O3
      ≥98.5
      99.2
      SiO2
      ≤0.2
      0.18
      Fe2O3
      ≤0.15
      0.10
      NaO
      ≤0.4
      0.3
      Packing density(g/cm3
      0.5-1.0
      0.85
      Damaged rate (%)
      ≤15
      12
      Refractoriness (℃)
      1790
      Grain Size: (mm)
      0.25-5,0.2-1,1-3,3-5,