METHOD OF PREPARING SPHERICAL TITANIUM OXIDE POWDER

摘要

PROBLEM TO BE SOLVED: To provide a method of preparing spherical monodisperse titanium dioxide particles which facilitates handling of the powder, has a grain size of 0.3 to 10 microns and has high crystallinity. SOLUTION: Non-oxide raw material is melted by an oxygen-containing plasma and simultaneously the oxidation reaction of the melt is induced. Since the oxidation reaction is an endothermic reaction, temperature rises locally near the melt and the liquid drops of the oxide of 0.3 to 10 micros splash. These liquid drops are solidified, by which the crystalline spherical titanium dioxide powder is obtained.