Bone Ash Powder for Metallurgical Mould Coating
📌 Product Description
Bone Ash Powder is a high-purity, calcined tricalcium phosphate (Ca₃(PO₄)₂), derived from animal bones. It is widely used as a non-stick, heat-resistant coating for molds in metallurgical applications, especially in the casting of non-ferrous metals such as gold, silver, copper, and aluminum.
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 |
Bone ash powder is a vital component in the creation of metallurgical mould coatings. This fine white powder, derived from burned animal bones, is used in the foundry industry to produce high-quality casting products.
Metallurgical mould coatings are applied to mould surfaces to enhance the quality of metal castings. They provide a protective barrier between the molten metal and the mould, preventing defects such as metal penetration, erosion, and metal-mould reactions. Bone ash powder plays a crucial role in this process due to its unique properties.
One of the main benefits of using bone ash powder in metallurgical mould coatings is its high refractoriness. This means that it can withstand high temperatures without melting or degrading, making it ideal for applications in the foundry industry. Additionally, bone ash powder has a low thermal expansion coefficient, which helps ensure dimensional stability during the casting process.
Another advantage of bone ash powder is its ability to improve the surface finish of castings. When added to mould coatings, it helps create a smooth and uniform surface on the final product, reducing the need for secondary finishing processes. This not only saves time and resources but also enhances the overall quality of the casting.
In addition to its technical properties, bone ash powder is also a sustainable and eco-friendly material. It is derived from natural sources and can be safely disposed of without harming the environment. This makes it an attractive option for foundries looking to minimize their environmental impact.
Overall, bone ash powder is a valuable ingredient in the production of metallurgical mould coatings. Its unique properties, including high refractoriness, low thermal expansion, and ability to improve surface finish, make it an essential component for foundries looking to produce high-quality castings efficiently and sustainably. So, next time you see a flawless metal casting, remember that bone ash powder might have played a crucial role in its creation.
🌍 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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