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Preheating Alumina Silica Fire Brick / Strong Fire Resistance Insulating Fire Brick

Categories Furnace Refractory Bricks
Brand Name: SEEC
Model Number: electric arc furnace preheating furnace LD BOF BF
Certification: ISO
Place of Origin: China
Delivery Time: 1-3months
Packaging Details: Standard international package
Type: preheating furnace, electric arc furnace
Material: High-alumina Brick
Application: LD, BOF, BF
model: as required
Conditon: Brand new
Weight: as designed
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    • Product Details
    • Company Profile

    Preheating Alumina Silica Fire Brick / Strong Fire Resistance Insulating Fire Brick

    furnace refractory bricks for Ladle furnace BOF BF preheating furnace electric arc furnace


    Made of fused mag-chrome, magnesite and chromite;

    processed by ultra high temperature firing.

    With properties of very good thermal shock stability, oxidation-reduction resistance, thermal fatigue resistance, wear resistance and erosion resistance.

    Especially with ultra strong resistance to slag attack and vacuum damage.

    Under vacuum refining condition, or strong oxidation atmosphere, or ultra high temperature liquid erosion, or high alkaline slag and frequent alkalinity changes slag attacks.

    They are proved to be the irreplaceable, the longest service life and the most economical furnace lining refractories.

    Therefore they are widely used in the vacuum refining furnaces (eg. RH Gegasser, VOD degassing ladles), Argon Oxygen Refining Furnaces (eg. AOD Converters), ultra high power EAF furnace, non-ferrous smelting big furnaces ( IC3 Refining Converters, Pierce Smith Converters, Noranda Furnaces, Outokumpu Flash Smelting Furnaces), or used at key parts of refining furnaces under very harsh conditions, eg. Working linings, hot spots, slag line zone, tuyere zone, erosion zone and easily damaged parts of big furnaces.


    Aluminum oxide wear-resistant thermal refractory fire bricks


    At present,our main products are clay brick,sillica brick,high alumina bricks,mullite bricks,carborundum brick,magnesite refractory castable ,spun injection type aluminum sillicate alcupunctue blankets,aluminum sillicate fiber products,such as all kinds of refratory materials,not only have good reputation among the same industry at home and sales perfomance ,but also have a good service.Produces are mainly covers metallurgy,steel,chemical industry building materials, thermal power,coking and other high temperture fields.


    Advantages

    1, Guarantee period is one year , since the date of purchasing.
    2, 24- hour technical supports.
    3, Design product according to the customers requirement.
    4, We provide available price.


    High-alumina Brick QRL-65 Physical and Chemical Indexes
    AL2O3 ,%≥42
    refractoriness ℃≥1750
    Reheating linear change rate (1500 degrees *2h)-0.3--0.1
    Apparent Porosity AP,%≤21
    Cold Crushing Strength CCS,Mpa≥40
    Volume Density BD,g/cm³≥2.15
    Creep rate% (1250℃*50h)0.2Mpa<0.8

    Details
    Brand

    Silica Brick

    Fire clay

    Special High Alumina
    Cordierite
    JNLA
    JN40a
    JN40b
    BGZ-65
    BGZ-70
    JLZ-75
    JHL-75
    SDHA60S
    Al2O3 %≤1.530~36≥40≥40
    ≥75
    ≥75
    ≥60
    ≥40
    Fe2O3 %≤1.5≤2.5≤2.0≤2.0
    ≤0.8
    ≤1.5
    SiO2 %≥94.5
    ≥65
    ≥70
    K2O+Na2O %CaO≤2.5
    ≤0.5
    MgO≥3

    Refractoriness
    ≥1690
    ≥1730
    ≥1730
    ≥1790
    ≥1790
    ≥1790
    ≥1580

    Refractoriness under Load
    KD≥1650
    Ta≥1450
    Ta≥1400
    Ta≥1320
    Ta≥1350
    KD≥1550
    KD≥1650
    Ta≥1640
    %
    Permanent Linear Change
    1450℃×2h
    0~+0.2
    1500℃×2h
    +0.1~-0.4
    1500℃×2h
    0~+0.3
    1300℃×2h
    0.7
    %
    Apparent Porosity
    ≤22
    ≤24
    ≤24(22)
    ≤20
    ≤24
    ≤22(24)
    ≤21(23)
    ≤20
    ≤18
    ≤20
    ≤30
    g/cm3
    Bulk Density

    ≤2.33
    True
    Density

    ≤2.34
    True
    Density
    ≥2.0
    ≥2.0
    ≥2.0
    ≥2.65
    ≥2.4
    MPa
    Cold crushing strength
    ≥40
    ≥35
    ≥25(20)
    ≥35
    ≥30
    ≥35(25)
    ≥40(30)
    ≥65
    ≥90
    ≥50
    ≥15
    (1100℃ )
    Thermal shock resistance(cycles)
    ≥35
    ≥20
    (DIN51068)
    ≥20
    ≤1.0%
    Residue quartz
    ≤1.0
    %
    (1000℃)
    ≤1.28
    ≤1.30
    ≤0.6
    ≤0.6
    ≤0.6

    Application

    Furnace
    bottom, wall

    Others

    Regenerator wall brick and checker

    Coking chamer,
    combustion chamber

    Door



    Product Tags:

    heat proof bricks

      

    stove fire bricks

      
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