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Introduction
Features
-- As calcic metasilcate mineral, is a new kind of industrial raw mineral materials.
-- White powder and relative density is 2.8,melting point is 1554°C
-- Good insulation performance, endure acid, resist abrade, bear high temperature.
Chemical analysis
| Whiteness |
SiO2 |
CaO |
Al2O3 |
Fe2O3 |
TiO2 |
MgO |
L.O.I |
| >80 |
49-53 |
43-45 |
0.26max |
0.35max |
0.02max |
1.3max |
1.5-3 |
The physical properties of wollastonite
| Iterm |
Result |
| Granularity(mesh) |
80-2500 |
| Ratio of length to diameter(L/D) |
8-25 |
| absorption oil value (g/100g) |
20-26 |
| Whiteness(%) |
>80 |
| Refraction(%) |
1.63 |
| Density(g/cm3) |
2.95 |
| Expantion coefficient(mm//mmºC) |
6.5×10-6 |
| Melting point( ºC ) |
1450 |
| Hardness(Moh's) |
4.5-5 |
| Sedimentation value(ml/200m) |
40-90 |
Usage
--At present, it's mainly applied to ceramic industry, and secondly used as metallurgy protecting slag and paint.
--Further, it can be used as electrode coating, mountain cork substitute, abradant binding agent, compound of glass and stuffing of rubber, plastic, insulating material and paper.
--Be widely used in paint, plastics, rubber, electric welding, glass, electron industry, metallurgy and paper making, Friction material, Construction, Ceramics.
--Some wollastonite can be used as finishing material of building or compound of white cement.
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