types of Black pumice stones
Black types of pumice stone
Size pf black types of pumice stone : 0.1-1mm,1-3mm,3-5mm,5-10mm.10-20mm,20-40mm,40-100 mm,100-300 mm or as requested
Color of black types of pumice stone: Black and red, white
1.Chemical Composition:
SiO2 | CaO | MgO | Fe2O3 | FeO | Al2O3 | TiO2 | K2O | Na2O |
73.32% | 0.73% | 0.20% | 1.34% | 1.12% | 13.24% | 0.10% | 4.33% | 3.58% |
2.Properties:
1.It has lots of holes.
2.Weight is very light.
3.Perfect intensity
4.Heat preservation and thermal insulation, noice insulation.
5.Fireproofing
6.Corrosion and acid-base resisting
7.Non-pollution and no radioactivity, environment protection
3.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) |
4.Usage:
Application | washing clothes |
construction | |
irrigation works | |
grinding | |
filter material | |
barbecue charcoal | |
garden scene | |
soilless culture | |
hot stone therapy |
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