Kaolin Clay — Al₂Si₂O₅(OH)₄

Description

1. Product Overview

Kaolin Clay (Al₂Si₂O₅(OH)₄) is a naturally occurring hydrous aluminum silicate mineral widely used as a high-performance industrial raw material. It serves as a critical functional filler and coating agent across paper, ceramics, paints, plastics, rubber, and specialty chemical industries. Its fine particle structure, chemical inertness, and brightness-enhancing properties make it a strategic input for improving product quality, opacity, and surface finish. In global supply chains, kaolin is valued for its consistency, versatility, and cost-efficiency, making it an essential mineral for scalable industrial manufacturing.

2. Key Specifications & Technical Characteristics

• Chemical Composition: Al₂Si₂O₅(OH)₄ (Hydrous Aluminum Silicate)
• Purity/Grade: Industrial grades typically 80%–99% kaolinite content (refined and calcined grades available)
• Physical Form: Fine powder, micronized powder, or slurry (application-dependent)
• Color: White to off-white (brightness varies by grade)
• Particle Size: Typically 0.2–10 microns (customized milling available)
• Density: ~2.6 g/cm³ (bulk density varies by processing)
• Moisture Content: ≤1%–2% (dry grade)
• Packaging Options:
  • 25 kg PP/PE laminated bags
  • 1 MT jumbo bags
  • Bulk tanker / containerized shipment (slurry form)
• Shelf Life: Indefinite when stored in dry, sealed conditions

3. Core Industrial Applications

Kaolin Clay is a high-value functional mineral used across multiple industrial verticals:

• Paper Industry: Enhances brightness, opacity, smoothness, and printability in coated paper and board products.
• Ceramics & Refractories: Provides plasticity, thermal stability, and whiteness in porcelain, sanitary ware, and tiles.
• Paints & Coatings: Acts as an extender pigment improving rheology, durability, and surface finish.
• Plastics & Rubber: Reinforces mechanical strength, improves dimensional stability, and reduces production cost.
• Cosmetics & Pharmaceuticals: Used in controlled-grade formulations for absorbency and inert binding properties.

Its superior particle morphology and chemical inertness allow it to outperform many synthetic fillers in cost-performance efficiency and processing stability.

4. Competitive Advantages

• Consistent Quality: Strict grading and beneficiation ensure uniform particle distribution and performance reliability
• Stable Supply Chain: Long-term sourcing capacity with scalable production volumes for industrial demand
• Logistics Efficiency: Export-ready packaging optimized for containerization and bulk handling
• Cost Advantage: High filler efficiency reduces overall formulation costs without compromising performance
• Environmental Compatibility: Naturally abundant, non-toxic mineral with low environmental processing footprint
• Technical Support: Full documentation available including COA, MSDS, and particle analysis reports

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20 MT
• Loading Capacity:
  • 20 ft container: ~20–22 MT (depending on packaging type)
  • 40 ft container: ~26–28 MT (bulk/jumbo optimized loading)
• Supply Format: Ex-works / FOB / CIF available upon request
• Lead Time: Standard export dispatch within 7–14 days depending on volume and specification requirements