METHOD FOR PRODUCTION OF FINE SINGLE-PHASE HYDROXYL-APATITE Russian patent published in 2000 - IPC

Abstract RU 2147290 C1

FIELD: industrial inorganic synthesis. SUBSTANCE: invention relates to preparation of pure calcium phosphate salts and can be used in sorbent and catalyst production. Method of invention involves synthesis of calcium phosphate from aqueous suspension of calcium carbonate or hydroxide and phosphoric acid solution at their molar ratio (0.4-0.7):1 and temperature 20-50 C followed by adding potassium or sodium hydroxide aqueous solution to pH 10-12, separating product, washing, and drying at temperature not exceeding 60 C. EFFECT: improved purity of product. 5 ex

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RU 2 147 290 C1

Authors

Longinova N.M.

Lipochkin S.V.

Kozyreva N.A.

Mikhajlichenko A.I.

Dates

2000-04-10—Published

1999-07-02—Filed