Ebonex Bone Ash is produced by calcinating degelatinized bone at approximately 1100°C, followed by cooling and milling into a fine powder with a minimum of 95% passing through a 325-mesh sieve. Originally developed for use in the porcelain industry, particularly in bone china manufacturing, it has since gained prominence in metal casting, especially for refined copper, copper alloys, and aluminum. Its expansion into the aluminum industry has been significant, playing a crucial role in Direct Chill casting of ingots and billets. This is due to its key benefits, including excellent non-wetting properties, chemical inertness, high heat transfer resistance, and its ability to extend the lifespan of refractory materials and equipment.

Ebonex Bone Ash is commonly used as a protective coating on various metal-handling equipment, such as ladles, launders, tundishes, and moulds, as well as on floor areas near mould stations and furnaces. It can be applied in either suspension or powder form. In suspension form, it is mixed with water and applied using a spray gun or dipping method, with Baume level adjustments based on surface temperature ensuring optimal coating. In powder form, it prevents molten metal from coming into contact with refractory surfaces, seals seams and cracks, and facilitates easy cleanup of metal spills.

Known for its high thermal stability, Ebonex Bone Ash withstands temperatures up to 1480°C with minimal weight loss. Its excellent coating properties ensure a smooth, uniform finish with strong adhesion, preventing mould erosion and minimizing brush marks and streaks. It is easy to use, requiring only simple mixing with water, and is compatible with various refractory-based coatings. Its versatility allows for multiple application methods, including spraying, brushing, and dipping. Overall, Ebonex Bone Ash is a highly effective, non-wetting protective coating widely utilized in the metal casting industry due to its durability, ease of use, and superior heat resistance.

Bone Ash

Bone Char

Animal bone charcoal (synonyms: Bone Charcoal, Bone Black, Bone Char) described in many technical dictionaries as the product of the "dry distillation" of animal bones. In more definite terms, however, one might define the material as the product of the carbonization, in an inert atmosphere, of bones of animals.

Historically, bone charcoal has been used for a variety of purposes for several thousand years, but it is in the dry climate of Egypt that the earliest records of the application of bone charcoal are to be found. Egyptian pigments from the tomb of Perneb (2650 BC) have been found to include bone black which can be easily distinguished from other carbon compounds by simple chemical analysis.

However, it was not until 1811 that the decolorizing properties of bone charcoal were fully recognized when a French pharmacist by the name of M. Figuier, made this observation while preparing a shoe-black from honey, vinegar and finely ground animal charcoal. Subsequent to this discovery, bone charcoal became widely used in the sugar refining industry during the 19th century to remove color from raw sugar solution. Indeed, bone charcoal has continued to be used for this purpose over the years in many countries throughout the world. Today, bone charcoal is still the prime adsorbent used in the sugar refining industry.