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

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.