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High-Density Sintered Alumina Channel Blocks - Premium Quality from China Suppliers & Factory
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High-Density Sintered Alumina Channel Blocks - Premium Quality from China Suppliers & Factory

Introducing our high-quality 99 dense alumina forehearth channel blocks, proudly manufactured in China by leading suppliers in the industry. These innovative ceramic components offer exceptional purity and density, making them the ideal choice for replacing fused α-β blocks in forehearths. Known for their outstanding mechanical strength, high thermal conductivity, and superior resistance to wear and corrosion, our dense alumina channel blocks are perfect for a variety of industrial applications. Trust our factory to provide you with reliable, high-performance solutions tailored to your needs.

    Manufacturing Process

    1_99% ALumia Casting Channel Block 1b7r
    • 1
      Raw Material Preparation

      High-purity alumina powder and various particle grains size are prepared.

    • 2
      Forming

      The raw material is formed into the desired shape using techniques such as casting or extrusion.

    • 3
      Sintering

      The formed blocks are sintered at high temperatures to achieve the required density and mechanical properties.

    The Advantages

    99 dense alumina channel blocks are no glass pollution, eliminate glass impurity, bubble, ‘Cat-Scratch’ and reducing defects of glass production. The production yield-rate can be highly improved, especially for crystal glass, cosmetic glass, perfume glass, high-grade container glass etc.
    1. High Density

    Dense alumina has a high density, contributing to its mechanical strength and durability.

    2. Thermal Stability

    It can withstand high temperatures, making it suitable for high-temperature applications.

    3. Wear Resistance

    Alumina is highly resistant to wear and abrasion, which is beneficial in harsh environments.

    4. Corrosion Resistance

    It resists chemical attacks from acids and alkalis, enhancing its longevity in corrosive settings.

    5. Electrical Insulation

    Alumina is an excellent electrical insulator, making it useful in electrical and electronic applications.

    1_99% ALumia Casting Channel Block799

    Application

    This product is mainly used in the hot end of furnaces such as tableware glass and bottle glass, container glass furnace etc.

    Items 99 Dense Alumina(Casting)
    Al2O3% ≥97.5
    SiO2% ≤0.18
    Fe2O3% ≤0.1
    Bulk Density g/cm³ ≥3.15
    Apparent Porosity % ≤16
    Cold Crushing Strength (Mpa) ≥110
    Refractoriness Under Load T0.6/℃ ≥1700
    NOTE: All data above are average test results under standard procedure and are subjected to variation. Result should not be used for specification purpose or creating any contractual obligation. For more information on the safety application or materials, please contact with our sales engineer.

    Frequently Asked Questions (FAQ)

    What are the primary applications of 99 Dense Alumina Casting Channel Blocks?
    These blocks are primarily used in the hot end of furnaces for manufacturing tableware glass, bottle glass, and container glass. They are especially beneficial for high-grade glass products like crystal, cosmetics, and perfume glass.
    How do these channel blocks prevent defects in glass production?
    By utilizing high-purity dense alumina, these blocks eliminate glass pollution, impurities, bubbles, and "Cat-Scratch" defects, significantly increasing the overall production yield-rate.
    What is the manufacturing process of these alumina blocks?
    The manufacturing process involves three key stages: Raw Material Preparation (mixing high-purity alumina powder and grains), Forming (shaping via casting or extrusion), and Sintering at high temperatures to achieve density.
    What are the key technical specifications of the casting material?
    Key specifications include: Al2O3 ≥97.5%, SiO2 ≤0.18%, Bulk Density ≥3.15 g/cm³, Cold Crushing Strength ≥110 Mpa, and Refractoriness Under Load T0.6 ≥1700℃.
    Why is thermal stability important for channel blocks?
    Dense alumina has exceptional thermal stability (Refractoriness Under Load ≥1700℃), allowing it to withstand the continuous extreme temperatures inside glass furnaces without losing structural integrity.
    Do these blocks offer corrosion and wear resistance?
    Yes, dense alumina is highly resistant to chemical attacks from acids and alkalis, as well as mechanical wear and abrasion, which greatly enhances its service life in harsh environments.