Patent ID: 7727497
Filing Date: 2010-06-01
Classification: B82Y,C01B,C04B

Abstract:
1. A method for producing particles, comprising: mixing a first substance containing at least either one phosphorus oxide selected from the group consisting of phosphorus suboxide, diphosphorus trioxide, diphosphorus tetroxide, and diphosphorus pentoxide, or triethyl phosphate and a second substance containing calcium in a solvent to react the first substance with the second substance to thereby obtain a slurry in a gelled liquid state; feeding droplets of the slurry containing an amorphous reaction product obtained from a reaction between the first substance and the second substance in a heated atmosphere to bring the amorphous reaction product into a gaseous state; and crystallizing the amorphous reaction product in the gaseous state to obtain particles mainly composed of a calcium phosphate-based compound.