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      • Nozzle Wall-block

    • Category：
      Steel＆Iron Industry
    • Browse number：
      211
    • Release time：
      2024-05-29 11:44:57
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    Nozzle wall-block uses high-purity corundum and spinel as raw materials, formed by vibration casting and baked at low temperature, which has the advantages of high thermal strength, good resistance to thermal shock, good resistance of corrosion and scouring, and long service life.


    Item

    Diffusive purging plug

    Purging plug

    Nozzle wall-block

    Al2O3(%) ≥

    90

    95

    94.5

    Al2O3+MgO(%) ≥

    92

    97.5

    96

     SiO2(%) ≤  

    0.4

    /

    /

    Apparent Porosity(%) ≤

    1500℃×3h

    25

    18

    16

    Bulk Density (g/cm3) ≥

    110℃×24h

    2.70

    3.25

    3.20

    Cold Crushing Strength (MPa) ≥

    1500℃×3h

    30

    120

    100

    Modulus of Rupture(MPa) ≥

    1500℃×3h

    10

    30

    25

    Linear Change After Heat(%)

    1580℃x3h

    0~+0.3

    0~+0.18

    0~+0.3

    0.2Mpa RUL(℃) ≥

    0.2MPa

    1680

    1690

    1690




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