METHOD OF MANUFACTURING A HYDROXYAPATITE POWDER FOR BLAST AND HYDROXYAPATITE POWDER FOR BLAST

摘要

Provided is a method for preparing a hydroxyapatite powder for blast use, wherein the method comprises: forming a suspension by using a raw material including calcium phosphate and a solvent; and forming an aggregate by drying the suspension. Subsequently, a sintered body is formed by heat treating the suspension at a first temperature, and then the sintered body is pulverized to form a pre-hydroxyapatite powder. Thereafter, the pre-hydroxyapatite powder is heat treated at a second temperature higher than the first temperature to form the hydroxyapatite powder having a Vickers hardness deviation of 30 or less. [Reference numerals] (AA) Start; (BB) End; (S111) Form a mixed solution by mixing a raw material in a solvent; (S113) Add a pH regulator in the mixed solution; (S115) Mix the mixed solution and make the same into slurry; (S117) Remove the solvent by performing a precipitation process for the mixed solution; (S119) Clean fine particles by distilled or deionized water; (S120) Form an aggregate by drying a suspension; (S130) Form a sintered body by heat treating the aggregate at a first temperature; (S140) Form a pre-hydroxyapatite powder by pulverizing the sintered body; (S150) Heat treating the pre-hydroxyapatite powder at a second temperature