HYDROXYAPATITE AND MANUFACTURING METHOD THEREOF

To provide a high quality hydroxyapatite with extremely low residue of proteins and unfired carbons, etc., and a manufacturing method of a hydroxyapatite capable of mass production of the hydroxyapatite by a simple process.SOLUTION: The manufacturing method of a hydroxyapatite involves a firing step of firing a livestock-derived bone raw material at a temperature of 600°C or over and 900°C or under, and a pulverization step of pulverization of the bone raw material after firing to produce a powder of 50% cumulative volume particle diameter (D) of 0.8 μm or over and 100 μm or under. An embodiment where the livestock-derived bone raw material is a steamed and dried bone powder derived from livestock, a fired bone powder derived from livestock, a bone ash derived from livestock, a raw bone derived from livestock, or processed product of these is desired. An embodiment where the firing is performed under an oxygen-containing atmosphere is desired.SELECTED DRAWING: None 【課題】タンパク質分及び未燃炭素分等の残留が極めて少なく、高品質なヒドロキシアパタイト、及び前記ヒドロキシアパタイトを簡易な工程により大量生産が可能であるヒドロキシアパタイトの製造方法の提供。【解決手段】家畜由来の骨原料を６００℃以上９００℃以下の温度で焼成する焼成工程と、焼成後の前記骨原料を５０％累積体積粒径（Ｄ５０）が０．８μｍ以上１００μｍ以下の粉末となるように粉砕する粉砕工程と、を含むヒドロキシアパタイトの製造方法である。前記家畜由来の骨原料が、家畜由来の蒸製骨粉、家畜由来の焼成骨粉、家畜由来の骨灰、家畜由来の生骨、又はこれらの処理物である態様、前記焼成が酸素含有雰囲気下で行われる態様などが好ましい。【選択図】なし