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golden expanded Vermiculite flake
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
- A. Chemical properties of vermiculite
Chemical quota: Mg x (H2O)(Mg3-x)(ALSiO3O10)(OH2)
Molecular |
SiO2 |
MgO |
AI2O3 |
Fe2O3 |
FeO |
K2O |
H20 |
CaO |
PH |
Loss in burning 800°C/Hour |
Name |
Silicon |
Magnesium |
Aluminum |
Iron |
Iron |
Potassium |
Hydrogen |
Calcium |
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 |
- B. Physical properties of Vermiculite
Vermiculite sheet Density |
Expanded vermiculite Porosity |
Hard-ness |
Melting |
Compressive |
Index of |
Moisture |
Moisture |
Anti |
Anti microbial |
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- |
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 |
|
In 15kg,25kg,500kg ,500kg bags
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