Bone Ash Powder Enhances Translucency and Smooth Surface
📘 Product Overview:
Bone Ash (also called calcium phosphate, primarily tricalcium phosphate Ca₃(PO₄)₂) plays an important and specific role in the ceramics and porcelain industry, especially in the production of bone china and other fine ceramics.
Typical Specifications of Pure Bone Ash
| Item | Specification |
|---|---|
| Ca₃(PO₄)₂ Content | ≥ 95% (can be up to 99%) |
| CaO | ~50% |
| P₂O₅ | ~40–43% |
| Moisture | ≤ 1% |
| Ignition Loss | ≤ 2% |
| Mesh Size | 200–325 mesh (customizable) |
Functions of Bone Ash in Ceramics & Porcelain
1. Key Ingredient in Bone China
Bone ash is a core component of bone china, typically making up 40–50% of the raw material mix, along with kaolin and feldspar.
It imparts high whiteness, translucency, and mechanical strength to the finished porcelain.
2. Improves Workability
It enhances plasticity and workability of ceramic bodies, making the clay easier to shape and mold.
3. Controls Firing Properties
Bone ash lowers the firing temperature compared to traditional hard porcelain.
It contributes to a better vitrification process, meaning the ceramic body becomes glass-like and water-resistant at lower temperatures.
4. Enhances Translucency and Smooth Surface
The phosphates in bone ash help produce a smooth, glossy surface after glazing and firing.
It contributes to the semi-translucent effect of bone china, making it distinct from other types of porcelain.
5. Promotes Crystal Formation
In high-temperature firing, bone ash facilitates the formation of specific crystalline phases (like anorthite), which enhance the strength and appearance of the ceramic.
🌍 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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