• 石川ライト1号

    • Particle Size

      10mmPass

    • Specific gravity

      0.40~0.75

  • 石川ライト2号

    • Particle Size

      4.0mmPass

    • Specific gravity

      0.45~0.75

  • 石川ライトF2号

    • Particle Size

      2.8mmPass

    • Specific gravity

      0.55~0.85

  • 石川ライト3号

    • Particle Size

      1.7mmPass

    • Specific gravity

      0.65~0.95

  • 石川ライト4号

    • Particle Size

      1.0mmPass

    • Specific gravity

      0.75~1.00

  • 石川ライト4S号

    • Particle Size

      1.0mmPass

    • Specific gravity

      0.75~1.10

  • 石川ライト5号

    • Particle Size

      0.5mmPass

    • Specific gravity

      0.8~1.05

  • 石川ライト6号

    • Particle Size

      0.355mmPass

    • Specific gravity

      0.75~1.10

Characteristics of ISHIKAWALITE

Rock type:Sedimentary rock(mainly tuff)

Microphotograph of ISHIKAWALITE(30)

Microphotograph of ISHIKAWALITE(180)

Main composition

Components
(Chemical symbols)
Analytical Value(%)
Silicic anhydride(SiO2 74.00
Alumina(Al2O3 12.60
Iron oxide(Fe2O3 0.99
Calcium oxide(CaO) 0.83
Magnesium oxide(MgO) 0.16
Potassium oxidize(K2O) 4.50
Sodium oxide(Na2O) 3.30
Titanium oxide(TiO2 0.062
Ignition loss(Ig.loss) 3.40
  • Absorption rate

    29.20%(JIS:R:A5208)

  • Prosity test

    77.6%(ISHIKAWALITE No.1)(JIS:R:2614)

  • pH test

    4.5~7.0

  • Acid resistance test

    60℃ Be sulfuric acid, Be sulfuric acid+concentrated nitric acid 2.3%...unchanged
    30℃ Be sulfuric acid, Be sulfuric acid+concentrated nitric acid 2.3%...unchanged
    ISHIKAWALITE is a natural glass (SiO2), and is extremely stable scientifically.

  • Refractoriness

    SK 3a(C1.140℃)JIS-R2204

  • Thermal conductivity

    180.5℃ 0.280Kcal/mh℃
    302.5℃ 0.348Kcal/mh℃

  • Freezing test

    Left the product for 24 hours at -20℃...Unchanged (JIS-A5208)

  • Satirated permeation

    2.5×10-2m/s

※As ISHIKAWALITE is a natural material, all of the products may not conform to the above data.