Get good quality wollastonite mineral powder thin section high aspect ratio needle fibrous at low price Wedge India. Wollastonite is a chemically simple mineral composed of calcium and silica with a chemical formula CaSiO3 .
 
It occurs as aggregates of bladed or needle-like crystals with hardness of 4.5 to 5 on Mohs' scale. The uses of wollastonite in applications other than as filler include marine wallboard, paint, plastic, in refractory liners in steel mills and as a partial replacement for short-fibre asbestos in certain applications.
 
Wollastonite is used in many industries, in manufacturing of ceramic, fluxing properties, freedom from volatile constituents, whiteness, and acicular particle shape. Wollastonite decreases shrinkage and gas evolution and increases strength, maintains brightness during firing. In metallurgical applications, wollastonite serves as a flux for welding, a source for calcium oxide, a slag conditioner, and to protect the surface of molten metal during the continuous casting of steel.
 
Applications:
Needle silicon ash powder by the silicon ash storage powder grinding of silicon ash powder processed with high length to diameter ratio (15 - part) with wollastonite has a fibrous, acicular structure, color bright white, natural low iron, sulfur, phosphorus excluding water of crystallization, high melting point, corrosion resistance, ageing resistance, small thermal expansion coefficient, high refractive index, good reinforcement, sealing, heat resistance, abrasion resistance and stability characteristics. Can replace fiber talc, asbestos, glass fiber, etc. Acicular wollastonite powder is widely used in industry and agriculture.
1. Building materials industry
2. Friction materials
3. Plastics industry
4. Ceramic industry
5. Fiberglass industry
6. Insulation, thermal insulation materials, glass products and polymer composites, etc
7. Paint and coatings industry
8. Metallurgical and refractory industries
 
As an additive in paint, it improves the durability of the paint. It improves its resistance to weathering, reduces gloss, reduces pigment consumption.
 
Technical Specifications of Wollastonite:
Iterm(needle-like wollastonite)
WW120
WW200
WW400
WW800
WW1250
SiO2%
49
49
50
50
51
CaO%
46
46
45
45
45
Fe2O3%
0.18
0.18
0.18
0.18
0.16
MgO%
0.8
0.8
0.8
0.8
0.8
Al2O3%
0.12
0.12
0.12
0.12
0.12
Moisture
0.3
0.3
0.3
0.3
0.3
Whiteness
90
90
91
91
92
L/D
22:1
18:1
15:1
12:1
10:1
325 silica %
0.15
0.10
0.06
0.01
0.008
PH value
9
9
9
9
9
loss on ignition(los) %
2.5
2.5
2.5
2.5
2.0