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High quality aggregate hydrophobic swelling perlite


Hydrophobic perlite is a glassy granular products. It  is a certain size of perlite after the appropriate temperature preheating, high temperature calcined expansion and the special hydrophobic treatment. It is neutral, non-flammable, tasteless, acid and alkali and with good chemical stability. Compared with ordinary hydrophobic products, it has good durability. Hydrophobic perlite is particularly suitable in LNG / LPG transport ships, large cryogenic liquid storage tanks and other ultra-low temperature insulation.

 
(1) Particle size gradation Sieve Analysis :
    Grain Size
    (μ)Sieve residue (%)
    Type A Type B
    + 800 5±5 20±10
    800 ~ 500 20±10 20±10
    500 ~ 250 30±10 30±10
    250 ~ 160 20±10 20±10
    160 ~ 63 20±10 10±10
    - 63 5±5 5±5
(2) Tap density Compacted Density : 50 ~ 65 kg/m3
(3) Hydrophobicity: ≥ 98%
(4) Thermal Conductivity:≤0.039 w/mk at 0℃
(5) Water content:≤ 0.3% by weight