Wollastonite: A Versatile Industrial Mineral for Modern Applications


Wollastonite is a naturally occurring calcium silicate mineral widely used in ceramics, plastics, paints, and construction. Its needle-like structure and high thermal stability make it a preferred choice for industrial applications. This article explores its types, functions, and how to source it reliably from China.


How to Find Reliable Wollastonite from China in 2025


China is a leading supplier of wollastonite, offering competitive pricing and high-quality grades. To find reliable suppliers:

  • Check certifications like ISO 9001 and SGS reports.
  • Verify production capacity and sample quality.
  • Compare pricing and logistics support.

Platforms like Alibaba and Made-in-China list verified suppliers with customer reviews.


What Buyers Should Know Before Buying Wollastonite from China


Before purchasing, consider:

  • Purity levels (typically 90-98%).
  • Particle size and aspect ratio for specific applications.
  • Packaging options (bulk bags or customized).

Negotiate MOQs and shipping terms to optimize costs.


Types of Wollastonite


Wollastonite is classified by:

  • Needle-like (high aspect ratio) – Reinforces plastics and rubber.
  • Powdered (low aspect ratio) – Used in ceramics and paints.
  • Surface-treated – Enhances compatibility with polymers.

Functions and Features of Wollastonite


Key properties include:

  • High brightness (85-92% whiteness).
  • Low moisture absorption.
  • Thermal stability up to 1,100°C.

It improves mechanical strength and reduces shrinkage in composites.


Scenarios of Wollastonite


Common applications:

  • Ceramics – Lowers firing temperatures.
  • Plastics – Replaces fiberglass in automotive parts.
  • Construction – Enhances cement durability.

How to Choose Wollastonite


Select based on:

  • End-use requirements (e.g., aspect ratio for reinforcement).
  • Supplier reliability and testing reports.
  • Cost-effectiveness vs. alternatives like talc or mica.

Wollastonite Q & A


Q: Is wollastonite eco-friendly?
A: Yes, it’s non-toxic and recyclable, making it a sustainable choice.

Q: What’s the price range?
A: Ranges from $200-$600/ton depending on grade and quantity.

Q: Can it replace asbestos?
A: Absolutely, it’s a safer alternative in insulation and friction materials.

Q: How is quality tested?
A: Through X-ray diffraction (XRD) and chemical analysis.

Q: What’s the lead time from China?
A: Typically 2-4 weeks, subject to shipping terms.