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    CHALCO Fine Calcined Alumina Powder

    Using high raw materials, calcined alumina is being produced in the rotary kiln on the reasonable temperature, with the characteristic of high conversion rate, stable crystallization and low impurity content.

    Its products have excellent performance of high mechanical strength, stable shrinkage rate, good electrical insulation, high wear resistance, and outstanding corrosion resistance.


    SPECIFICATION SHEET

    Calcined Alumina

     

     

     

     

    Brand

    chemical components %

     

     

    α-Al2O3%≥

    effective

    density g/cm3

     

    Primary crystal size D50 μm

     

    Al2O3

     

    SiO2

     

    Fe2O3

     

    Na2O≤

     

    L.O.L≤

    A-C-30

    99.0

    0.10

    0.04

    0.35

    0.20

    94

    3.93

    4±1

    A-C-3-A

    99.0

    0.10

    0.04

    0.35

    0.20

    93

    3.93

    2.5±1

    A-C-40

    99.4

    0.20

    0.07

    0.40

    0.25

    90

    3.90

    -

     

     

     

    Using high raw materials, calcined alumina is being produced in the rotary kiln on the reasonable temperature, with the characteristic of high conversion rate, stable crystallization and low impurity content.

    Its products have excellent performance of high mechanical strength, stable shrinkage rate, good electrical insulation, high wear resistance, and outstanding corrosion resistance.

    Application:

     

    various abrasives, abrasive tools and fillers

    fine powder of various ceramic and refractory grade alumina

    high alumina structural ceramic

    electronic components, high insulating ceramic

     

    SPECIFICATION SHEET

    Fine Powder of Calcined Alumina

     

     

     

     

    Brand

    chemical components %

    Particle size

     

    Al2O3

     

    SiO2

     

    Fe2O3

     

    Na2O≤

     

    L.O.L≤

    median particle sizeD50 μm

     

    screen residue ≤

    A-CG-2-A

    99.0

    0.2

    0.04

    0.35

    0.25

    1-3

    -

    A-CG-1-A

    99.2

    0.2

    0.04

    0.3

    0.25

    ≤1

    -

    A-C-10-LS

    99.5

    0.1

    0.04

    0.1

    0.2

    ≤1

    -

     

     


    Excellent sintering performance, stable linear shrinkage,suitable particle size and narrow particle size distribution. Widely used in refractory and ceramic industries.

    Application:

     

    Refractories, refractory binder

    High-alumina ceramic.High-alumina glaze

    Glass

    Polishing materials


    SPECIFICATION SHEET

    Low sodium Calcined Alumina

     

    Brand

    AC-200MS

    AC-200LS

    AC-200LLS

    AC-300MS

    AC-300LS

    AC-300LLS

    Al2O3

    99.0

    99.5

    99.5

    99.0

    99.5

    99.5

    SiO2

    0.02

    0.02

    0.02

    0.02

    0.02

    0.02

    Fe2O3

    0.02

    0.02

    0.02

    0.02

    0.02

    0.02

    Na2O≤

    0.20

    0.10

    0.05

    0.20

    0.10

    0.05

    L.O.L≤

    0.20

    0.10

    0.10

    0.20

    0.10

    0.10

    α-Al2O3%≥

    93

    94

    95

    93

    94

    95

    crystallinity

    μm

     

    2±1

     

    2±1

     

    2±1

     

    3±1

     

    3±1

     

    3±1

    effective density g/cm3

     

     

    3.93

     

     

    3.94

     

     

    3.95

     

     

    3.93

     

     

    3.94

     

     

    3.95

     

    Calcined alumina is made of high-quality raw materials and calcined at high temperature. It has the advantages of high conversion rate, stable crystal shape and low impurity content. Its products have high mechanical strength, stable shrinkage rate, good electrical insulation performance, excellent wear resistance, corrosion resistance and high temperature resistance.

    Features

    •  High α-Al2O3% content

    •  No mineralization, low sodium oxide content, high purity

    • Excellent particle distribution

    Application

    •  High quality refractory material

    • Electronics and Advanced Ceramics

    •   Wear-resistant alumina ceramics

    SPECIFICATION SHEET

    Low sodium Fine powder of Calcined Alumina

     

     

    Brand

    ACG-200

    MS

    ACG-200L

    S

    ACG-200LL

    S

    ACG-300

    MS

    ACG-300L

    S

    ACG-300LL

    S

    Al2O3≥

    99

    99.5

    99.5

    99

    99.5

    99.5

    SiO2≤

    0.02

    0.02

    0.02

    0.02

    0.02

    0.02

    Fe2O3≤

    0.04

    0.04

    0.04

    0.04

    0.04

    0.04

    Na2O≤

    0.2

    0.1

    0.05

    0.2

    0.1

    0.05

    L.O.L≤

    0.3

    0.2

    0.1

    0.3

    0.2

    0.1

    α-Al2O3%

    93

    94

    95

    93

    94

    95

    Particle

    size μm

    2±1

    2±1

    2±1

    4±1

    4±1

    4±1

     

    Calcined α alumina micro powder takes calcined α alumina raw powder as raw material, and is processed and ground into micro powder products with reasonable particle size distribution and high thermal stability. For wear-resistant ceramics, anti-insulators, thermally conductive resins, transparent ceramics, etc.

    Features

    • Reasonable particle size distribution

    •     good uniformity

    •     High thermal stability 

    APPLICATIONS:

    • High quality refractory material

    • Electronics and Advanced Ceramics

    • Wear-resistant alumina ceramics



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