• Alumina hollow ball brick-alumina insulating brick
  • Application:
    Used for lining heat-protection material of industrial furnaces in industries such as metallurgy, petrochemical, magnetic materials, powder metallurgy, machinery and electron. etc
    Add composite binding agent based on the host materials alumina hollow ball and a-Al203, vibration and pressurization for molding, it is of high temperature of load soften-ing, small vibration burning wire, which is the ideal lining material of industrial furnace below 1800C
    Physical and chemical indicators:

    Name of commodity
    Performance and index
    Alumina hollow ball product Alumina insu lat ing brick
    Bulk density (℃) 1.2—1.5 1 1.2
    Compressive strength at ambient temp Mpa 10 4 5
    Linear change on reheating ℃×hr % ≤ 1800×40.3 1650×60.4 1650×60.3
    Apparent porosity % 60-70    
    A12O3% ≥ 98.5 88 92
    SiO2% ≤ 0.2    
    Fe2O3 % ≤ 0.1 0.4 0.4
    Heat conductivity≤350±20℃w/m.k 0.6-0.9 0.5 0.65
    Highest use temp ℃ 1800 1500 1550
    Load softening temp ℃ 1750    
    Heat shock stability ℃/times 1100 Air cooling>20    

    The actual parameters can be adjusted according to the requirements of users.

Dongtai Huanghai Refractcries Factory all right reserved
Contact:Zhai Zhi Hui 18962038246 Tel:0086-0515-85545098
Fax:0086-0515-85541768 Email:zzh@ Website:http://www.
Add:Dongtai Hougang Town Industrial Park, Jiang Su Province Record number: Technical support:
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