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Volcanic rocks

  Volcanic rock (volcanic rock or pumice) is a kind of glassy lava with dense pores, which is formed by the rapid cooling of magma in the process of volcanic eruption, due to the rapid decrease of pressure and the rapid overflow and expansion of interna

Product Details

Chemical Composition
SiO2
CaO
MgO
Fe2O3
FeO
Al2O3
TiO2
K2O
Na2O
53.82%
8.36%
2.46%
9.08%
1.12%
16.89%
0.06%
2.30%
2.55%
Lava rock
Color: red,black,white
Size: 3-6mm,6-8mm,8-10mm,1-3cm,3-6cm,6-8cm,8-10cm,10-50cm can be customized.
style: stone, particle,powder.
Feature:

(1)Porous ,light weight, high strength.
(2)Containing sodium, magnesium, aluminum, silicon, calcium, titanium,manganese, iron, nickel, cobalt, molybdenum etc
(3)Far infrared magnetic wave.
(4)Thermal insulation, heat preservation, sound absorption.
(5)Fireproofing, acid and alkali resistance, corrosion resistance.
(6)No pollution ,no radiation.

Volume-weight(kg/m3)
430-870
Water absorption
11.7-17.03%
Loose volume-weight(kg/m3)
520
Cylinder pressure strength
1.218Mpa
Moisture
1%
Mechanical Intensity
5.08Mpa
Heat conductivity coefficient w/(m.k)
0.326
Soften coefficient
0.84
Apparent density
Kg/m 3 640-860/(390*240*190)
Hollow ratio(%)
48/(390 *240 *190)


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