Pumice
Pumice, with crude appearance,get its name for it can float on the water. It is a natural,ideal,environmental product with the following characteristics:light,high strength,acid and alkali-resistance,corrosion-resistant,no-pollution,no- radioactivity and so on.
physical property
color | hardness | PH | radioactivity | ignition loss | Water materials | Acid materials | Density | softening point | Fusion temperature |
grey | 5.0 | 7.0 | 0 | 3% | 0.15% | 2.7% | 350-900g/l | 900℃ | 1200℃ |
Chemical property
SiO2 | AL2O3 | Fe | Fe2O3 | H2O | Na | K | Ca | TiO2 | SO3 |
71.5％ | 12.5％ | 12.5％ | 1.5％ | 3.4％ | 1.6％ | 1.8％ | 2.8％ | 0.2％ | 0.1％ |
Usage
● In China it is mainly used in these fields:
1.Building:natural concrete light aggregate. Like heat insulation and preservation materials ,floor,wallboard,active addition and so on.
2. Chemical Industry: filtering medium,desiccant,catalyst,molecular sieve carrier.
3. Plastics and Padding Industry
4. Others: pesticides carrier,fertilizer control agent.
● In foreign countries it is mainly used in following fields:
1.Building Materials: as padding can reduce weight and increase refract ability.
2.Abrasive Industry: mainly as abrasive and polishing composition.
3.Daily-Use Chemical Industry: beauty materials,padding of cosmetics,toothpaste,soap and so on.
4.Petrochemical Industry: as padding of rubber,asphalt,paper making,paint and so on.
5.Heat Insulator: pumice is the main material, we can get mineral wool product after high melt which is used as ceiling sound insulation.