Kaolin clay coating grade

Description

1. Product Overview
Kaolin clay coating grade is a refined hydrous aluminum silicate designed to optimize surface finish, opacity, and printability in high-speed coating lines. Its primary industrial use is as a functional pigment and extender in paper coatings, architectural paints, and ceramic glazes. The key value proposition is superior gloss development and binder demand reduction, leading to lower total formulation cost. Strategically, it replaces less efficient fillers and enables thinner, higher-performance coating layers—critical as industries push for lightweight, sustainable materials.

2. Key Specifications & Technical Characteristics

• Chemical composition: Hydrous aluminum silicate (Al₂Si₂O₅(OH)₄)

• Purity level: ≥92% kaolinite, low free silica (<0.5%)

• Physical characteristics: Fine white powder; brightness (ISO) 86–90%; particle size D50: 0.6–0.8 µm; specific gravity: 2.58 g/cm³; pH (28% slurry): 6.0–7.5

• Packaging options: 1 MT bulk bags, 25 kg multilayer paper bags, or pneumatic tanker delivery

• Shelf life: 24 months in dry, covered storage (unopened packaging)

3. Core Industrial Applications

• Paper & paperboard: Pre-coating and top-coating for LWC, ULWC, and folding boxboard – improves print gloss, ink holdout, and pick resistance at lower coat weights vs. GCC or talc.

• Architectural & industrial paints: Semi-gloss and matt emulsions – enhances hiding power, scrub resistance, and suspension stability, allowing 8–12% TiO₂ extension.

• Ceramic tiles & sanitaryware: Glaze and engobe formulation – increases fired brightness and reduces crazing due to matched thermal expansion.

• Cost advantage: Lower binder demand (up to 15% less styrene-butadiene latex) compared to calcined kaolin or coarser hydrous grades.

4. Competitive Advantages

• Quality consistency: ISO 9001:2025 certified with real-time particle size control; batch-to-batch brightness variation ≤0.5%.

• Supply reliability: Dual-source mining + dedicated processing line for coating grade; 99.3% on-time delivery over 24 months.

• Logistics capability: Port-side warehousing in Rotterdam, Houston, and Shanghai for 48-hour dispatch.

• Price competitiveness: Fixed quarterly pricing + volume rebates above 500 MT/month.

• Sustainability: Zero process wastewater discharge; 30% lower embodied carbon than regional benchmarks.

• Technical support: Full rheology curves, formulation calculators, and on-site trials via a dedicated applications engineering team.

5. Commercial & Supply Information

• Minimum order quantity (MOQ): 20 MT (one bulk bagged container)

• Bulk 20MT loading capacity: 20 MT per 20’ dry container (or 24 MT per 20’ container with densified pellets, upon request)