Product Description
Lava stone volcanic rock
Specification:
1.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% |
2. Physical properties
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) |
3.Usage
Lava is used in construction,irrigation works, grinding, filter material, barbecue charcoal, garden scene, soilless culture, etc. It is also a perfect material used in hot stone the rapy, which is good to Promote the body's metabolism