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High-quality fibrous wollastonite has a high aspect ratio (10-20:1) after processing. Because wollastonite has a fibrous, Needle-like structure, the color is bright, and it is naturally low in iron, micro-sulfur, and phosphorus without crystals. Water, high melting point, acid and alkali resistance, low moisture and oil absorption, low electrical conductivity, good insulation, good thermal stability and dimensional stability, etc., are natural green, low-carbon and energy-saving industrial mineral raw materials.
Needle-like wollastonite can partially replace glass fiber, plant fiber, and pulp fiber as the reinforcement of polymer composite materials, improve material properties, play a role in weight gain and reinforcement, and reduce production costs. It has stronger reinforcing performance than ordinary wollastonite powder, and it is used as a skeleton structure in the product.
Technical indicators (reference value)
|
Component |
SiO2（%） |
CaO（%） |
Al2O3 （%） |
Fe2O3（%） |
TiO,（%） |
MgO（%） |
S (%)，Max |
P (%)，Max |
L.O.I (1050C) (%) |
PH |
|
Content |
46-50 |
43-45 |
0.15-0.30 |
0.2-0.35 |
0.02 |
0.5-1.2 |
0.02 |
0.007 |
3-5 |
9-11 |
|
Mesh |
D50( u m) |
Loose Density (g/ml) |
Tapped Density (g/ml) |
Aspect Ratio (L:D) |
Whiteness (%) |
|
200 |
80土1 |
0.35-0.45 |
0.50-0.70 |
11-16:1 |
83-88 |
|
400 |
45土1 |
0.35-0.45 |
0.50-0.70 |
11-16:1 |
83-88 |
|
600 |
22土1 |
0.35-0.45 |
0.50-0.70 |
10-15:1 |
85-89 |
|
800 |
20土1 |
0.30-0.48 |
0.60-0.80 |
10-15:1 |
85-89 |
|
1000 |
15土1 |
0.30-0.48 |
0.60-0.80 |
8-13:1 |
85-90 |
|
1250 |
13土1 |
0.30-0.48 |
0.60-0.80 |
8-13:1 |
85-90 |
Special for building materials: wollastonite can replace asbestos which is harmful to human health due to its non-toxic, odorless and non-radioactive advantages. After special processing, it can still maintain its unique Needle-like structure, which makes the impact resistance of new environmentally friendly building materials such as calcium silicate board, fireproof board, fiber cement board, calcium sulfate board added with wollastonite Needle-like powder. , Bending strength, wear resistance, corrosion resistance, heat insulation and fire resistance are greatly improved. It can also be used in white cement, construction putty, etc.
Special for friction materials: application in friction materials can improve the stability of friction materials, reduce or eliminate cracking, greatly enhance the friction resistance and heat resistance of the finished product, and improve its physical and mechanical properties. And can replace or partially replace other fiber raw materials in friction materials, reduce the production cost of its products, and improve the added value of products. In the production of ceramic bonded abrasives and grinding wheels, it will greatly improve the melting speed and high temperature shock resistance, and can be used in brake pads, linings, clutches, valve plugs, pulleys, etc.
Widely used in: rubber and plastic industry, paper industry, glass fiber, insulating materials and other specialized industries (for details, click on the application field to view)
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