- BrandJinli
- Country of manufactureChina
- TypeMineral
Vermiculite is a layer-structured metamorphic rock of gibbsite silicate. Rich in magnesium, it comes from hot-liquid-eroded or weathered phlogopite.
Specification
a. Vermiculite-B model : 0.3mm-1mm ,07-2mm,1.4mm-4mm
b.Vermiculite for board,gardening, fire-proof : 1mm-3mm,2mm-4mm,3mm-5mm,5mm-8mm
c.Vermiculite for friction and seal :16mesh-40mesh,40mesh-80mesh 60mesh-100mesh,200mesh.325mesh,400mesh
d.Vermiculite -H model : 0.3mm-1mm, 1.4mm-4mm,0.7mm-2m
Chemical properties of vermiculite
Chemical quota: Mg x (H2O)(Mg3-x)(ALSiO3O10)(OH2)
Molecular formula |
SiO2 | MgO | AI2O3 | Fe2O3 | FeO | K2O | H20 | CaO | PH | Loss in burning 800°C/Hour |
Name | Silicon dioxide |
Magnesium oxide |
Aluminum trioxide |
Iron trioxide |
Iron oxide |
Potassium oxide |
Hydrogen oxide |
Calcium oxide |
PH |
4.5-7.5 |
Content% | 37-42 | 11-23 | 9-17 | 3.5-18 | 1-3 | 5-8 | 7-18 | 1-2 | 8-11 |
Physical properties of Vermiculite
Vermiculite sheet Density | Expanded vermiculite Porosity | Hard-ness | Melting point |
Compressive resistance |
Index of refraction |
Moisture content |
Moisture absorbency |
Anti congelation |
Antimicrobial | Corrosion resistance |
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- resistant |
1.Relative humidity 100% 24H
2. Frozen and melted for 15 minutes in 20 under zero, its size won't change
Norms of Vermiculite Flakes ( standards JC/T810-1996)
Categories | No.1 | No.2 | No.3 | No.4 | No.5 | No.5 |
Grain Size mm | 8-16 | 4-8 | 2-4 | 1-2 | 0.5-1 | < 0.5 |
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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.