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    Fused cast corundum brick - RS Refractory
    Fused corundum bricks, also known as α-β fused cast bricks, are high-performance refractories made primarily from aluminum oxide (
    A l 2 O 3 cap A l sub 2 cap O sub 3
    𝐴 𝑙 2 𝑂 3
    )
    with a blend of alpha (
    α alpha
    𝛼
    )
    and beta (
    β beta
    𝛽
    )
    alumina crystal phases.
    They are created by melting high-purity alumina in an arc furnace and casting it into molds, resulting in a dense, low-porosity material with excellent high-temperature resistance, chemical stability, and corrosion resistance, especially against molten glass. This makes them ideal for applications in glass furnaces, such as the working end, paving, and launders.
    Manufacturing and composition
    • Process :
      Raw alumina is melted at temperatures above
      2000 °C 2000 °C
      2 0 0 0 ° C
      in an electric arc furnace, then cast into molds and slowly cooled.
    • Composition :
      The bricks typically contain a mixture of alpha (
      α alpha
      𝛼
      )
      and beta (
      β beta
      𝛽
      )
      alumina phases, with the balance depending on the specific product.
    • Structure :
      The fusion-casting process creates a dense, crystalline structure with very low porosity.
    • What Is Fused Cast Refractory Brick? - Chemistry For Everyone
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    • Fused Cast Alpha Beta Alumina Lip Brick for Float Glass Furnace
      The composition of α, β-Al2O3 fused cast bricks contains only a small amount of glass phase, which will not ooze out and pollute t...
      Alibaba.com
    • [Hot Item] Glass Kiln Refractory, Alpha-Beta Al2O3 Fused Cast Corundum Brick
      May 26, 2022 — This kind of product has dense structure and no contamination to glass. It ( Alpha-Beta Al2O3 Fused Cast Corundum Bric...
      Made-in-China.com
    Key properties
    • High-temperature resistance :
      They can withstand temperatures between
      1600 °C 1600 °C
      1 6 0 0 ° C
      and
      1800 °C 1800 °C
      1 8 0 0 ° C
      or higher.
    • Corrosion resistance :
      They offer excellent resistance to corrosion from molten glass and other aggressive substances, and their use minimizes the risk of bubbles or contamination in the glass melt.
    • Thermal shock resistance :
      The combination of
      α alpha
      𝛼
      and
      β beta
      𝛽
      alumina phases provides good resistance to rapid temperature changes.
    • Mechanical strength :
      These bricks have high mechanical strength and good wear resistance.
    • Chemical stability :
      They are chemically stable and resist corrosion from acids, alkalis, and slags.
    Applications
    • Glass furnaces : Widely used in the working parts of glass melting furnaces, including the clarification section, working end, launders, nozzles, and brick for the port openings.
    • Other high-temperature industrial furnaces : Can be used in various high-temperature industrial applications.
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    • Fused Cast Alpha Beta Alumina Refractory Brick Block - Wedge India
      Properties: High-temperature resistance: Fused cast alpha beta alumina bricks can withstand temperatures ranging from 1600°C to 18...
      Wedge India
    • Fused Cast Corundum Alpha-Beta Series - AGRM ENGINEERING
      With a high crystal density, α-β corundum products have distinctive corrosion resistance to glass liquid at 1350 ℃. Fused cast α c...
      AGRM ENGINEERING
    • THE DIFFERENCE BETWEEN FUSED ZIRCONIUM CORUNDUM ...
      Mar 7, 2022 — This process leads directly to the formation of a dense structure, so this block has good resistance to strong alkaline...
      otq.tprefractory.com
    • The difference between fused zirconium corundum bricks ... - LinkedIn
      Dec 13, 2024 — Fused corundum bricks are mainly composed of α-Al2O3 and β-Al2O3 crystal phases, with a content of about 50% each. The...
      LinkedIn
    • Alpha Beta Alumina Bricks - Durable Refractories for Glass Melting ...
      The crystal structure is compact, the porosity is low, the high temperature wear resistance is good, the mechanical strength is hi...
      Alibaba.com
    • Fused Cast Corundum Brick α-β, α, β | Glass Furnace Refractory
      What is Fused cast corundum brick? The fused cast corundum brick is a refractory product widely used in glass furnaces and other i...
      kilnrefractories.com
    • Fused Cast Alpha Beta Alumina Refractory Brick Block
      Beta alumina (β-Al2O3): Beta alumina is another crystalline phase of alumina that enhances the thermal shock resistance and chemic...
      Wedge Group
    • Fused α-β corundum brick characteristics - Refractory Materials
      Nov 7, 2023 — Due to its excellent performance in resistance to glass erosion, resistance to foaming, and resistance to stones, espec...
      rsxwrefractory.com
    • Fused Corundum Refractory Bricks
      Alumina fused cast bricks are divided into: α-Al2O3 bricks, 95%~98% Al2O3; (α-β)-Al2O3 bricks, 2%~5% to 53%~50% β-Al2O3; and β-Al2...
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    • Fused Cast Alpha Beta Alumina Refractory Brick Block - Wedge India
      Properties: High-temperature resistance: Fused cast alpha beta alumina bricks can withstand temperatures ranging from 1600°C to 18...
      Wedge India
    • Fused Cast Corundum Alpha-Beta Series - AGRM ENGINEERING
      With a high crystal density, α-β corundum products have distinctive corrosion resistance to glass liquid at 1350 ℃. Fused cast α c...
      AGRM ENGINEERING
    • THE DIFFERENCE BETWEEN FUSED ZIRCONIUM CORUNDUM ...
      Mar 7, 2022 — This process leads directly to the formation of a dense structure, so this block has good resistance to strong alkaline...
      otq.tprefractory.com
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    Fused Cast Corundum Alpha-Beta - AGRM ENGINEERING


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