WOLLASTONITE PROPERTIES, GRADES & INDUSTRIAL USES
Acicular structure. High performance. Multi-industry use.
Wollastonite is a naturally occurring calcium silicate used as a functional filler and reinforcement in demanding industrial applications.
Wollastonite (CaSiO₃) is valued for its: – Acicular (needle-like) particle shape – High whiteness and brightness – Chemical and thermal stability Unlike typical fillers, wollastonite enhances: – Crack resistance – Mechanical strength – Thermal shock resistance It is used across ceramics, paints & coatings, plastics & polymers, refractories, and friction materials — where dimensional and thermal performance are essential.
INDUSTRIAL APPLICATIONS
Wollastonite is used in diverse sectors due to its unique performance-enhancing characteristics:
→ Ceramics & Sanitaryware – for sintering, whiteness, and crack resistance
→ Paints & Coatings – for matting, anti-corrosion, and film strength
→ Plastics & Polymers – as a reinforcing filler in engineered compounds
→ Construction – for boards, adhesives, and composite systems
→ Metallurgy – as a flux additive in slags and castables
→ Friction Materials – to stabilize brake pads and clutches
KEY PROPERTIES
Property
Chemical Formula
Whiteness
Aspect Ratio
Particle Shape
pH
Thermal Stability
Density
Typical Range
CaSiO₃
84–93%
From 3:1 up to >25:1
Elongated / acicular
~9.0
>1000°C
~2.9 g/cm³
OUR WOLLASTONITE GRADES
We offer three distinct product grades, tailored to specific technical and commercial requirements.
Use the guide below to find the right grade for your application.
TECHNICAL SUPPORT & LOGISTICS
InduMinerals works closely with certified producers to ensure:
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Consistent grade quality and particle control
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Supply of bulk or bagged material globally
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Technical documentation, SDS, and application insights
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Support in ceramic formulation, compound design, or paint systems
YOUR INDUSTRIAL MINERAL PARTNER
InduMinerals OÜ supplies high-purity wollastonite and dolomite for ceramics, coatings, plastics, metallurgy and construction. We offer reliable CIF and FOB delivery with full technical support. A partner of the European Raw Materials Alliance (ERMA), promoting secure mineral supply in Europe.