Key Material Ceramics & Porcelain Pure Bone Ash (Bone Powder)
📘 Product Overview:
Bone Ash is a fine white powder produced by calcining animal bones (mainly cattle bones) at high temperatures (typically 1000–1300°C) to remove organic matter, leaving behind a highly purified form of tricalcium phosphate.
Chemical Formula: Mainly Ca₃(PO₄)₂ (Tricalcium Phosphate)
Purity: 95–99% depending on grade
Appearance: Fine, odorless, white powder
Particle Size: Typically 200–325 mesh
How Bone Ash Works (Mechanism)
| Industry | Working Mechanism |
|---|---|
| Ceramics | Reacts with kaolin and feldspar at high temperatures, forms strong crystal bonds |
| Metallurgy | Forms a heat-resistant barrier on mold surfaces, aiding clean metal casting |
| Glass | Alters the glass network structure for better optical properties |
| Fertilizer | Slowly releases phosphorus and calcium to crops |
| Polishing | Micron-sized particles act as gentle abrasives for metal or glass surfaces |
Main Industrial Functions of Bone Ash
1. Ceramics & Porcelain (Bone China)
Key raw material in producing bone china (typically 40–50% of the formulation)
Enhances whiteness, translucency, and mechanical strength
Acts as a flux during firing, lowering melting points and improving vitrification
Promotes formation of anorthite crystals, contributing to durability
2. Metallurgy (Non-Ferrous Casting)
Used to coat molds in precious metal and silver refining (e.g., in brass and aluminum casting)
Acts as a thermal insulator and prevents metal adherence to the mold surface
3. Glass Industry
Acts as a phosphorus source to modify glass properties
Used in optical glass and specialty glasses for enhanced clarity and durability
4. Fertilizer Industry
Sometimes used as a source of calcium and phosphorus in specialized phosphate fertilizers
Especially in slow-release or organic-certified formulations
5. Polishing & Abrasives
Finely ground bone ash is used in metal polishing, giving a smooth and clean finish
🌍 Why Choose Our Bone Ash?
✔️ Sourced from quality animal bone and processed under controlled high-temperature kilns
✔️ Consistent particle size & purity for stable production use
✔️ Technical support for ceramic, metallurgical, and polishing applications
✔️ Export-ready packaging and documentation (COA, MSDS, SGS available)
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