| 摘要 |
PURPOSE:To economically obtain fine particle powder of sodium titanate useful as an ion exchanger or an adsorbent, having narrow particle size distribution, by spray-drying a mixed slurry of a titanium raw material compound and a sodium raw material compound, calcining, immersing the prepared granular product in water and stirring. CONSTITUTION:A mixed slurry of a titanium raw material compound and a sodium raw material compound blended in a molar ratio of TiO2 and Na2O of 3:1 is spray-dried and calcined at 700-1,100 deg.C to form particles comprising fine particles of sodium trititanate. Then the granular product is immersed in water or warm water and separated into single particles. Titanium dioxide and hydrous titanium oxide may be cited as the titanium raw material compound. A compound to produce Na2O in calcining, such as Na2O, NaOH, Na2CO3 or NaHCO3 may be cited as the sodium raw material compound.
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