METHOD OF OBTAINING CALCIUM APATITE Russian patent published in 2013 - IPC C01B25/32 C04B35/22 

Abstract RU 2473461 C2

FIELD: chemistry.

SUBSTANCE: invention relates to field of synthesis of materials used for preparation of technical and medical ceramics, as well as ion-exchangers. Method includes dissolving initial components: calcium compounds, metaphosphate, chloride in hot water. After that, obtained suspension is slowly heated to 300°C, with further heating of formed composition to 1050-1100°C. Then, it is kept at this temperature for 3-4 hours and formed fine-dispersed powder is washed with water to pH=8. As metaphosphate sodium hexametaphosphate is used.

EFFECT: method makes it possible to obtain calcium apatites with high output of target product: hydroxylapatite, chlorapatite or carbonate-substituted apatite with pure phase composition in fine-dispersed form.

2 cl, 1 tbl, 5 ex

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RU 2 473 461 C2

Authors

Aloj Al'Bert Semenovich

Makarova Anastasija Vadimovna

Mokin Nikolaj Konstantinovich

Dates

2013-01-27Published

2011-02-08Filed