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Corundum Sphere

Corundum balls, also known as alumina corundum ceramic balls, are mainly composed of alumina (Al2O3). They feature high alumina content, low lattice defects, excellent high-temperature resistance, thermal shock resistance, high mechanical strength, oxidation resistance, slag erosion resistance, wear resistance, corrosion resistance, and long service life. Due to the product's low SiO2 content, it avoids adverse reactions with fluorine-containing compounds in high-temperature gases that form volatile silicon compounds. This solves issues in the second-stage ammonia synthesis converter where SiO2 interacts with nitrogen-containing compounds, affecting process operation and product quality. The product can be widely used under special conditions involving high temperature, high pressure, high corrosion, and strong impact.

Keywords:

Corundum Sphere

Product Description

  • 产品描述
  •   Corundum balls, also known as alumina corundum ceramic balls, are mainly composed of alumina (Al2O3). They have the advantages of high alumina content, low lattice defects, high temperature resistance, excellent thermal shock resistance, high mechanical strength, oxidation resistance, slag erosion resistance, wear resistance, corrosion resistance, and long service life. Because the product has a low SiO2 content, it avoids adverse reactions with fluorine-containing compounds in high-temperature gases that form volatile silicon compounds. This solves the adverse factors affecting process operation and product quality caused by SiO2 reacting with nitrogen-containing compounds in the second-stage converter of ammonia synthesis. The product can be widely used under special conditions of high temperature, high pressure, high corrosion, and strong impact.

       Technical Specifications

    Performance

    Corundum Ball

    High Purity Aluminum Ball

    Chemical Composition

    Al 2 O 3

    99-99.5

    ≧99.9

    SiO 2

    0.5-5.0

    ≦0.3

    Fe 2 O 3

    ≦0.5

    ≦0.1

    Refractoriness ℃

    ≧1750

    ≧1850

    Acid Resistance %

    ≧95

    Alkali Resistance %

    ≧85

    Thermal Shock Resistance ℃

    800

    1000

    Mohs Hardness

    ≧8

    8.5-9

    Bulk Density Kg/m³ 3

    1800~2000

    2000~2200

    Specification Size

    Diameter Φ

    3

    6

    8

    10

    13

    16

    20

    25

    30

    38

    50

    60

    75

    Diameter Tolerance mm

    ±1.0

    ±1.5

    ±2.0

    ±2.0

    Opening Diameter mm

    -

    3-5

    5-8

    8-10

    Execution Standard: Industry Standard HG/T3683.1-2014 "Industrial Ceramic Balls - Inert Ceramic Balls"

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