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Wollastonite

Wollastonite is a kind of natural green, low carbon energy saving industrial mineral raw materials, the chemical formula is CaSiO3, mainly produced in acid rock and limestone contact zone, because of its special crystal shape and structure determines its characteristics, widely used in ceramic industry, chemical industry, metallurgy industry, building materials industry, electronics industry, paper industry etc..
Density : 2.75-3.10 g/cm3
Melting poit : 1480 ℃
Mohs hardness : 4.5~5.5
Thermal expansion coefficient : 6.5 x 10 /-6 ℃-1
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Product information:

Item

High Quality Low Price Wollastonite Powder For Ceramic/ Paper Making/ Construction Industry

HS code

2530909100

Application

Widely Applied in Ceramic, Metallurgy, Construction Material, Rubber and Plastic, Paper Making, Welding Material, Paint, Friction Material, Glass Fiber, Ceramic Fiber, Refractory Materials, etc.

Size

325 mesh ≤ 5% residue on sieve

MOQ

1 ton

Sample

Free samples are available

Color

White


Technical data:

PRODUCT CHEMICAL COMPOSITION AND PHYSICAL PROPERTIES

SiO2

49 - 54 %

CaO

42 - 45 %

Al2O3

≤ 0.3 %

Fe2O3

≤ 0.3 %

MgO

0.5 - 1.6 %

LOI

1 - 3 %

Moisture

≤ 1 %


Advantage:

● Lower firing temperature

● Shorten firing cycle

● Improve the strength of body and products

● Reduce hygroscopic expansion

● Reduce defects of body and glaze

● Can replace white pigment

● Adds luster to the glaze

● Improve glaze process and glaze quality

● Good electrical insulation properties


Application:

application of wollastonite

  • Building materials industry

    Wollastonite powder is a common raw material in the building materials industry. It is mainly used to make architectural materials such as gypsum boards, coatings, cement. Wollastonite powder has the characteristics of white, delicate, soft, and can adjust the color and strengthen the hardness and strength of the material in the building materials.

  • Chemical industry

    Wollastonite powder is mainly used in the chemical industry to make silicon -based polymer materials such as silicone rubber and silicone. Wollastonite powder has the characteristics of good heat resistance, corrosion resistance, aging resistance, etc. And can provide good processing performance and use effects for silicon -based polymer materials.

  • Electronic industry

    Wollastonite powder is mainly used in the electronics industry to make electronic materials such as electronic -grade silicon, alumina alumina. Wollastonite powder has the characteristics of high purity and stability, which can ensure the quality and stability of electronic materials.

  • The pharmaceutical industry

    Wollastonite powder can also be used in the pharmaceutical industry to make inorganic accessories and drug carriers. Wollastonite powder has the characteristics of high purity, acid and alkali, strong adsorption, etc., and can provide stable quality and efficacy for pharmaceutical products.


Process progress:

processing of wollastonite

  • Choose raw materials. In the wollastonite mine, must choose ore with good quality and stable chemical composition as raw materials.

  • Gravity processing. Crush raw ore for processing, filtering, etc., and decomposing it into gravel suitable for processing.

  • Grade and shatter. Use the grinding machine to shatter the gravel to make it a small particle.

  • Plime processing. Sievage and filtering through the pieces, control the size and ingredients within a certain range.

  • Drying and dry. Add the powder to the dehydration equipment to remove the water and dry it to achieve a certain degree of drying.

  • Packing and storage. The powder that has been completed is tested, and then packed according to a certain packaging specifications, and is stored in the warehouse.


Packing:

Normally, we choose to pack the wollastonite in ton bags, if customters has other requirements, we can also meet.

packing of wollastonite

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