1.Description:
Name | Expanded Vermiculite |
Color | Gold or silver |
Size | 0-30um0.3-0.6mm0.65-1mm0.3-1mm0.5-1.5mm0.5-1.2mm 1.2-3.5mm1.5-2.5mm1-2mm2-4mm3-6mm3.5-7mm,4-8mm,etc |
Features | poisonless, odorless , corrosion-resistant, Non-combustible , natural refractory properties , Good thermal insulation , low density ,etc |
2.Chemical properties:
Chemical quota: Mg x (H2O)(Mg3-x)(ALSiO3O10)(OH2)
Molecular | SiO2 | MgO | AI2O3 | Fe2O3 | FeO | K2O | H2O | CaO | PH | Loss in burning 800°C/Hour |
Content | 37-42% | 11-23% | 9-17% | 3.5-18% | 1-3% | 5-8% | 7-18% | 1-2% | 7-8 | 4.5-7.5% |
3. Physical properties of Vermiculite:
Vermiculite sheet Density | Expanded vermiculite Porosity | Hard-ness | Melting | Compressive | Index of | Moisture | Moisture | Anti | Antibio-ticity | Corrosion |
Kg/m3 | Kg/m3 |
| °C | Mpa | Ng=1.525-1.561 | % | % |
|
|
|
1100-1200 | 110-280 | 1-1.5 | 1320-1370 | 100-150 | Ng=1.545-1.581 | 7 | < 2 | good | good | Alkali- |
a.Reletive humidity 100% 24H.
b. Frozen and melted for 15 minutes in 20 under zero, its size won’t change
4.Norms of raw vermiculite (Implementation standards JC/T810-1996)
Categories | No.1 | No.2 | No.3 | No.4 | No.5 | No.5 |
Size mm | 8-16 | 4-8 | 2-4 | 1-2 | 0.5-1 | < 0.5 |
Sand contend % | ≤10 | ≤12 | ≤15 | ≤15-20 | ||
Expansion coefficient | 8 times | ≥7-8 times | >7 times | 6.5-7 times |
5. Main Use and Functions:
Jinli Minerals is the first in North China to set up an advanced digital thermostat to cool, select, winnow and grade its products .Jinli has produced and developed many products ,which have such advantages as lighter, easy to reduce high-temperature recession heat and cold and corrosion resistant, better ventilation and water preservation , poisonous less and odorless, low hardness, burning-avoidance.
It has already been used in many fields like construction materials ,heat-resistant materials ,sheet materials, painting, rubber, agriculture, forestry, nursery gardening ,forage, cultivation ,pharmacy, friction and sealing, metallurgy, etc.
| Agriculture | Horticulture | Construction | Industry |
| Animal feed | Blocking mixes | Sound Absorption Loose Filling | Thermal Insulation.Refracory |
| Anti-caking material | Hydroponics | Air setting binder | Sound Absorption Loose Filling |
| Bulking agent | Micro-propagation | Construction Coating | Gaskets or Seals |
| Fertilizer carrier | Rooting cuttings | Fireproofing Board | Friction Linings |
| Seed encapsulated | Seed germination | Gypsum plaster | Packing Materials |
| Soil conditioner | Sowing composts | Loft insulation | Drilling mud |
| Pesticide carrier | Potting mixes | Vermiculite Screeds | Filtration |
| Incubation animal | Lightweight Concretes | Brake pads & brake shoes | |
| Fixation of hazardous material | |||
| Paints |