Nanfeng Barium Sulfate Precipitated 400 Mesh for Industrial Applications
Product Overview
Nanfeng Precipitated Barium Sulfate 400 Mesh is a premium-grade, synthetic barium sulfate engineered through controlled precipitation and advanced micronization processes. Compliant with GB/T2899-2008 and global industrial standards, this ultra-fine powder (D50: 10–15 µm) delivers 97–98% purity, 4.50 g/cm³ density, and 1,580°C thermal stability, making it an indispensable functional filler for coatings, plastics, batteries, ceramics, and specialty chemical formulations.
With its orthorhombic crystal structure and optimized particle morphology, Nanfeng Barium Sulfate ensures:
- Chemical Inertness: Insoluble in water, ethanol, and acids (except hot concentrated H₂SO₄).
- Low Oil Absorption (8–12 g/100g): Reduces resin demand while enhancing coating rheology.
- Anti-Settling Properties: Non-sedimenting dispersion in both aqueous and solvent-based systems.
- Halogen-Free Composition: Ideal for eco-conscious formulations targeting REACH/ROHS compliance.
Certified under ISO 9001 and ISO 14001, Nanfeng Barium Sulfate is the sustainable choice for manufacturers prioritizing performance, cost efficiency, and regulatory alignment.
Key Features & Competitive Advantages
Superior Functional Performance
- Optical Enhancement: 95–97% ISO brightness ensures vibrant color development in coatings and plastics.
- Thermal Resilience: Withstands sintering temperatures up to 1,580°C (ceramic glazes) and 600°C carbon reduction processes (battery cathode production).
- Corrosion Resistance: Maintains integrity in pH 1–14 environments (ASTM D1308).
Process Optimization
- High Loading Capacity: Up to 40% filler incorporation in coatings without viscosity spikes (ASTM D2196).
- Grindability: Achieves Hegman fineness ≥7 in 30–40 minutes (ASTM D1210).
- Dispersion Stability: ≤0.5% sedimentation after 72h (ISO 1524).
Sustainability & Safety
- Heavy Metal-Free: Pb/Cd/As ≤5 ppm, compliant with EU Toy Safety Directive EN71-3.
- Low Dust Emission: Granulated form with ≤0.1% respirable particles (OSHA 1910.1000).
- Carbon-Neutral Production: 75% process water recycling and 50% renewable energy utilization.
Technical Specifications
| Parameter | Specification | Test Method |
|---|---|---|
| Chemical Composition | ||
| BaSO₄ Purity | ≥97.5% | XRF (GB/T 2899-2008) |
| Moisture Content | ≤0.2% | GB/T 5211.3 |
| Physical Properties | ||
| Particle Size (D50) | 10–15 µm (400 mesh) | Laser Diffraction (ISO 13320) |
| Specific Gravity | 4.45–4.55 g/cm³ | GB/T 21862.3 |
| Oil Absorption | 8–12 g/100g | GB/T 5211.15 |
| Performance Data | ||
| pH (10% Slurry) | 6.0–8.0 | GB/T 1717 |
| Whiteness (ISO) | ≥95% | ISO 2470 |
| LOI (1,000°C) | ≤0.5% | TGA (GB/T 4497.2) |
Application-Specific Benefits
1. Coatings & Inks
- Architectural Coatings:
- Enhances TiO₂ efficiency (15–20% replacement) while maintaining 90+ contrast ratio (ASTM D2805).
- Improves scrub resistance (≥8,000 cycles, ASTM D2486) and UV stability (QUV-A 1,500 hrs).
- Industrial Coatings:
- Reduces VOCs in solvent-based systems via low oil absorption.
- Provides anti-corrosion properties in epoxy primers (salt spray resistance ≥1,200 hrs, ASTM B117).
- Printing Inks:
- Boosts ink gloss (60° GU ≥90) and print sharpness via optimized particle packing.
- Stabilizes rheology for high-speed gravure printing (Brookfield viscosity ≤3,000 cP).
2. Plastics & Polymers
- Engineering Plastics:
- Increases PBT/PA66 tensile strength by 20–25% at 15% loading (ASTM D638).
- Improves dimensional stability under thermal cycling (-40°C to 180°C).
- PVC Products:
- Reduces plasticizer migration by 30% in flexible PVC (ASTM D1203).
- Enhances UV resistance for outdoor applications (ΔE ≤1.5 after 1,000 hrs Xenon exposure).
- Specialty Compounds:
- Flame-retardant synergist in halogen-free cables (UL94 V-0 achievable).
- Anti-static agent for electronic packaging (surface resistivity: 10⁹–10¹¹ Ω/sq).
3. Battery & Ceramic Industries
- Lithium-Ion Batteries:
- Cathode expansion agent improving cycle life by 15–20% (2,000+ cycles @ 1C).
- Enhances electrolyte wettability and ionic conductivity.
- Advanced Ceramics:
- Glaze component for high-gloss finishes (reflectance ≥85% @ 60°).
- Reduces thermal expansion coefficient (CTE) in kiln-fired products.
4. Paper & Construction Materials
- Paper Coating/Filling:
- Achieves 90–92 ISO brightness with 10–15% basis weight reduction.
- Improves printability and ink holdout (IGT pick test ≥1.5 m/s).
- Building Materials:
- Fire-resistant additive for gypsum boards (Class A ASTM E84).
- Densifier for cementitious composites (compressive strength +25%).
Production Process & Quality Control
- Raw Material Sourcing: High-purity barite ore (BaSO₄ ≥96%) and sulfuric acid (H₂SO₄ ≥98%).
- Precipitation Reaction:
- BaS + H₂SO₄ → BaSO₄↓ + H₂S↑ (controlled pH/temperature for crystal growth).
- Washing & Purification:
- 3-stage countercurrent washing to remove soluble impurities (Cl⁻ ≤50 ppm).
- Surface Modification:
- In-situ stearic acid coating (0.5–1.0% w/w) for hydrophobic dispersion.
- Drying & Classification:
- Spray drying + air-jet sieving to 400 mesh (D100 ≤45 µm).
- Quality Assurance:
- ICP-OES for heavy metals (Pb/Cd/As ≤5 ppm).
- SEM/EDS for particle morphology and purity analysis.
- Batch-wise GB/T 2899-2008 certification.
Competitive Comparison: Nanfeng vs. Alternatives
| Property | Nanfeng 400 Mesh | Natural Barite | Precipitated CaCO₃ |
|---|---|---|---|
| Purity (BaSO₄) | ≥97.5% | 92–95% | N/A |
| Oil Absorption | 8–12 g/100g | 15–20 g/100g | 18–25 g/100g |
| Thermal Stability | 1,580°C | 1,580°C | 800°C (decomposes) |
| Acid Resistance | Excellent (pH 1–14) | Good (pH 2–12) | Poor (pH <5) |
| Cost Efficiency | $580–620/ton | $400–450/ton | $200–250/ton |
Why Choose Nanfeng Barium Sulfate?
- Technical Expertise: 20+ years of R&D in precipitation and surface modification technologies.
- Supply Chain Excellence: 30,000-ton annual capacity with ≤10-day lead time globally.
- Custom Solutions: Tailored particle sizes (200–3,000 mesh) and coatings (silane, titanate).
- Sustainability Leadership: Zero wastewater discharge and 85% recycled packaging materials.
| Form | White powder |
| BaSO4 content | 98.0% min |
| 105°C Volatile matter | 0.09 max |
| Water soluble matter | 0.13 max |
| Fe | 0.0012 max |
| Whiteness | 97.9 min |
| Oil absorption | 16.3 |
| Fitness | 0.01 |
| pH value | 7.3 |
| Sulfide content | 0.0016 max |
| D50 | 1.17 max |
| Conductivity | 68.2 μS/cm |
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| Established | December 18, 2014 | ||
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About Beijing TDD E-commerce Co., Ltd.
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