Hydroxyapatite crystallization process in a DTM crystallizer of the descending suspension flow in a mixing chamber

• Autorzy: Koralewska J. , Matynia A. , Wierzbowska B. , Piotrowski K.
• Języki publikacji: EN

Abstrakty

EN

Reaction-crystallization processes of hydroxyapatite precipitation from its diluted water solutions in the DTM-type crystallizers were discussed. A liquid jet-pump, working with an assumed minimal power of the feeding stream, was tested. It was concluded that the product crystal agglomerates within the 76-316 žm size range were obtained. It was observed that with the increase of Ca2+ ions concentration in a feeding solution the agglomeration phenomena are more pronounced, while the increase of the temperature and the enlargement of suspension residence time effectively restrain the agglomeration effects.

Słowa kluczowe

EN

hydroxyapatite; reaction-crystallization; DTM crystallizer; liquid jet pump

PL

hydroksyapatyt; krystalizacja; katalizator DTM

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2006
• Tom: Vol. 8, nr 3
• Strony: 25--27
• Opis fizyczny: Bibliogr. 9 poz., rys., tab.

Twórcy

autor

Koralewska J.

autor

Matynia A.

autor

Wierzbowska B.

autor

Piotrowski K.

• Wrocław University of Technology, Institute of Inorganic Technology and Mineral Fertilizers, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław,

Bibliografia

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• (5) Matynia A., Koralewska J., Piotrowski K.: The influence of the process parameters on the hydroxyapatite continuous crystallization kinetics, Pol. J. Chem. Technol., 2005, 7, 1, 44.
• (6) Matynia A.: Crystallizers with a jet pump, Inż. Ap. Chem., 1997, 36, 6, 9 (in Polish).
• (7) Matynia A., Koralewska J., Wierzbowska B., Piotrowski K.: Jet-pump crystallizers in the reaction crystallization processes of sparingly soluble salts, Pol. J. Chem. Technol., 2005, 7, 3, 56.
• (8) Matynia A., Wierzbowska B., Koralewska J., Piotrowski K., Bechtold Z., Ćwiertnia E.: DTM type crystallizer with jet pump in reaction crystallization processes. A novel efficacious approach, Chemistry for Agriculture, 2005, 6, 879.
• (9) Rojkowski Z., Synowiec J.: Krystalizacja i krystalizatory, WNT, Warszawa, 1991