Pumice lumps are extensively used in the dressing of grinding wheels and abrasive belts. They are also used as a biological filtration media in odour control applications, in particular to assist in the removal of H2S, mercaptans, ammonia and volatile organic compounds. Pumice lumps are also used worldwide as a filtration media in koi aquatic systems and as a decorative feature in largescale landscaping projects.
Technical Data Sheet
1. Product Name / Reference
Pumice Lumps
2. Main Intended Use
Dressing of grinding wheels, odour control applications and koi aquatic filtration media
3. Chemical Description
This media contains no free silica
Compound Element | Chemical Formula | Typical Content |
Silicon Dioxide | SiO2 | 74.55% |
Aluminium Oxide | Al203 | 12.45% |
Potassium Oxide | K2O | 4.50% |
Sodium Oxide | Na2O | 4.00% |
Ferric Oxide | Fe2O | <2.00% |
Calcium Oxide | CaO | <2.00% |
Magnesium Oxide | MgO | <2.00% |
Titanium Dioxide | TiO2 | <2.00% |
Sulphur Trioxide | SO3 | 0.20% |
Manganese Oxide | MnO | 0.10% |
Carbon Dioxide | CO2 | 0.10% |
Ferrous Oxide | FeO | 0.06% |
Phosphorous Pentoxide | P2O5 | 0.005% |
Combined Water | H2O+ | 4.35% |
Determined by FAAS
4. Physical Properties
a. Bulk Density | 0.50 – 0.75g/cm3 |
b. Melting Point | 1200 oc |
c. pH Value | 7.0 – 8.0 |
d. Specific Gravity | 2.40 g/cm3 |
e. Hardness | 5.5 Mohs |
5. Sizes Available
Grade | Size |
TW | 30 – 50 mm |
TX | 60 – 80 mm |
6. Packaging
Packed in 25kg polypropylene sacks and 1 cubic metre IBC big bags
Water Filtration | No |
Odour Control | Yes |
Green Roof Systems | No |
Cosmetics Scrubs | No |
Dental Treatments | No |
PCB Scrubbing | No |
Glass Treatments | No |
Metal Finishing | Yes |
Lightweight Precast Concrete | No |
Odour Treatment | Yes |
Seawater Reverse Osmosis | No |
Automotive Polish | No |
Effluent Treatment | Yes |
Horticulture | Yes |
Construction | No |
Hand Cleaner | No |
Paints & Coatings | No |
Lightweight Plasters | No |