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Wfa White Fused Alumina/Aluminum Oxide/Alumina Oxide/Corundum


  • AlO3: 99.5%
  • TiO2: 0.0995%
  • SiO2 (not free): 0.05%
  • Fe2: 0.08%
  • MgO: 0.02%
  • Alkali (Soda & Potash): 0.30%
  • Crystal Form: Rhombohedral Class
  • Chemical Nature: Amphoteric
  • Specific Gravity: 3.95 grm/cc
  • Bulk Density: 116 lbs/ ft3
  • Hardness: KNOPPS = 2000, MOHS = 9
  • Melting Point: 2,000°C
  • Product Detail

    APPLICATION

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    Product Description

    White fused alumina powder is made of high-purity low-sodium alumina powder by melting at the high temperature, cooling crystallization, and then crushing. The white fused aluminum oxide powder grit is under strict controlling to keep the grain size distribution and the consistent appearance.

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    CHEMICAL PROPERTIES

      Abrasives Grade  Refractory Grade
    Item Grain  Micro Powder  Group Size Fine Powder
    Al2O3 (%)≥ 99  99  99 98.5  99 99
    Fe2O3 (%)≤ 0.05  0.06  0.08  0.1  0.1  0.1
    SiO2 (%)≤ 0.26  0.28  0.30  0.40  0.35  0.35
    TiO2 (%)≤ 0.08  0.09  0.10  0.15 0.3 0.3
    Size 12-80 90-150  180-220  240-4000 0-1mm1-3mm

    3-5mm

    5-8mm

    -180mesh -200mesh -240mesh -320mesh

     

    Physical Properties

    Appearance Angular
    Color White
    Hardness MOH 9.0 2100-3000kgf/cm2      
    True Density ≥3.90g/cm3
    Basic Material a-Al2O3

     

    Chemical Analysis

    Grain Size

    Component

    Required by GB Standard

    Typical Value of Our Product

    #4 - #80

    Al2O3

    ≥ 99.10%

    99.65%

     

    Na2O

    ≤ 0.35%

    0.22%

     

    Fe2O3

    -

    0.03%

     

    SiO2

    -

    0.03%

    #90 - #150

    Al2O3

    ≥ 99.10%

    99.35%

     

    Na2O

    ≤ 0.40%

    0.30%

     

    Fe2O3

    -

    0.04%

     

    SiO2

    -

    0.05%

    #180 - #220

    Al2O3

    ≥ 98.60%

    99.20%

     

    Na2O

    ≤ 0.50%

    0.34%

     

    Fe2O3

    -

    0.05%

     

    SiO2

    -

    0.08%

     


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  • Product Application

    1.Sandblasting, polishing and grinding of metal and glass.

    2.Filling of the paint, wear-resistant coating, ceramic, and glaze.

    3.Making of oil stone, grinding stone, grinding wheel, sandpaper and emery cloth.

    4.Production of ceramic filter membranes, ceramic tubes, ceramic plates.

    5.Production of polishing liquid, solid wax and liquid wax.

    6.For the use of wear-resistant floor.

    7.Advanced grinding and polishing of piezoelectric crystals, semiconductors, stainless steel, aluminum and other metals and non-metals.

    8.Specifications and composition.

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