To reduce an Fe content in powder obtained when raw material slurry prepared by dispersing fine particles in a solvent by using a vacuum dryer is dried.
By using the vacuum dryer which is heated from the outside, of which one end of a heating pipe kept under a vacuum pressure is connected to a feed part of the raw material slurry and of which the other end is connected to a powder collecting chamber kept under a vacuum pressure, a method for manufacturing powder is by drying the raw material slurry in which the fine particles of an average particle diameter of 1-10 μm are dispersed in the solvent. The fine particles are amorphous metal oxide particles, organic crosslinked polymer particles or organic inorganic composite particles, and then the feed rate of the raw material slurry to the heating pipe is made to be 18 or less L/hr.
YAMAMOTO YASUHIRO
SHIMIZU SHUJI
ONO YUJI
| JPS5538588B2 | 1980-10-04 | |||
| JPS63315101A | 1988-12-22 | |||
| JPH03288538A | 1991-12-18 | |||
| JPH0416232A | 1992-01-21 |
Tadashi Sugakawa
Hiroaki Ito
Hisahiko Ueki
Yukari Shibata
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