Wollastonite — CaSiO₃

Description

1. Product Overview

Wollastonite (CaSiO₃) is a naturally occurring calcium inosilicate mineral widely used as a high-performance functional filler and industrial additive. It is engineered for critical applications across ceramics, plastics, paints, metallurgy, and construction materials due to its needle-like crystal structure and exceptional reinforcement properties. The product delivers superior mechanical strength, thermal stability, and dimensional integrity in end-use formulations, making it a strategic material for high-value manufacturing sectors.

In global industrial markets, wollastonite plays an increasingly important role as manufacturers shift toward lightweight, durable, and cost-efficient material systems. Its unique morphology reduces shrinkage, improves abrasion resistance, and enhances product lifespan, offering a clear performance advantage over conventional mineral fillers.

2. Key Specifications & Technical Characteristics

• Chemical Composition: Calcium Silicate (CaSiO₃)
• Typical Purity: 90% – 98% (grade-dependent)
• Physical Form: Fine powder or acicular (needle-shaped) mineral
• Color: White to off-white
• Particle Size: 45–500 microns (customizable upon request)
• Density: ~2.8 – 2.9 g/cm³
• Moisture Content: ≤ 0.5% (standard industrial grade)
• Packaging Options:
  • 25 kg PP woven bags
  • 1 MT jumbo bags (bulk industrial supply)
• Shelf Life: Indefinite under dry, sealed storage conditions

3. Core Industrial Applications

Wollastonite is extensively used across multiple high-value industries:

• Ceramics & Refractories: Enhances thermal shock resistance, reduces firing shrinkage, and improves structural integrity of tiles, sanitary ware, and refractory linings.
• Plastics & Polymers: Acts as a reinforcing filler improving tensile strength, stiffness, and heat resistance in thermoplastics and composites.
• Paints & Coatings: Provides improved durability, corrosion resistance, and surface smoothness while reducing pigment demand.
• Friction Products: Used in brake linings and clutch materials for stable friction performance and wear resistance.
• Construction Materials: Enhances cementitious systems, plasterboards, and specialty mortars with improved durability and crack resistance.

Compared to conventional fillers such as talc or calcium carbonate, wollastonite offers superior reinforcement efficiency due to its unique acicular structure, enabling higher performance at lower loading levels.

4. Competitive Advantages

• Consistent Quality: Strict mineral grading ensures uniform particle morphology and chemical stability across batches.
• Reliable Supply Chain: Scalable sourcing capacity supports continuous industrial production requirements.
• Logistics Efficiency: Optimized bulk packaging for cost-effective global shipping and handling.
• Cost-Performance Advantage: Reduces overall formulation cost by improving material efficiency and lowering additive consumption.
• Sustainability Profile: Naturally occurring mineral with low environmental processing footprint and non-toxic characteristics.
• Technical Support: Full documentation available including COA, MSDS, and application guidance for industrial integration.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20 MT
• Loading Capacity: 20–25 MT per 20-foot container (depending on packaging configuration)
• Supply Form: Bulk bags / palletized bags for export shipment
• Delivery Terms: FOB / CIF available upon request
• Production Capacity: Scalable industrial supply for long-term procurement contracts