Gray Pumice Stone
Pumice stone is light porous acid volcanic rock having the
composition of rhyolite, used for scouring and, in powdered form, as an
abrasive and for polishing.
Pumice stone has a number of characteristics that combine to make it a valuable
and versatile player in a variety of industrial processes and products.
Pumice is amorphous and generally inert, has a neutral pH, yet is hard enough
to be used as an abrasive. Yet, because of its porous nature, pumice is
amazingly lightweight.
The friable nature of pumice is one of its most significant characteristics
meaning pumice is easily crushed and refined without loosing its utility: at
any grade from half-inch aggregate to microfine powder-pumice remains abrasive,
absorbent, non-compacting, lightweight.
Size of pumice sone: 1-3mm,3-5mm,5-10mm,10-30mm,30-50mm etc.
Application of pumice stone:
- Industry abrasive
- Light weight aggregate
- Water filter media
- Hydrophobic agricuture and horticulture
- Head insulation filler
Properties:
* Pumice Stone
has lots of holes.
* Weight is
very light.
* Perfect
intensity
* Heat
preservation and thermal insulation, noice insulation.
* Fireproofing
* Corrosion
and acid-base resisting
* Non-pollution
and no radioactivity, environment protection
Spesifikasi :
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)
