Title:
METHOD FOR PRODUCING INORGANIC FINE POWDER
Document Type and Number:
WIPO Patent Application WO/2021/210557
Kind Code:
A1
Abstract:
This method for producing an inorganic fine powder is a method in which a cumulative 50% particle diameter D50 on a volume basis is within a range of 0.01-5.0 μm, the method being characterized by comprising: a sorted powder producing step for obtaining a sorted powder which is sorted by dispersing, in a gas phase, a carboxylic acid-adsorbed inorganic raw material powder, in which a carboxylic acid is adsorbed onto an inorganic raw material powder having D50 of 10 μm or less; and a dry-sorting step for dry-sorting the sorted powder. The present invention can provide a method for producing an inorganic fine powder, with which an inorganic fine powder, having an extremely small number of coarse particles and a cumulative 50% particle diameter D50 on a volume basis within a range of 0.01-5.0 μm, can be produced with high productivity.
Inventors:
KAMAHORI YASUHIRO (JP)
IEDA HIDENORI (JP)
MORIYAMA TAKANORI (JP)
IEDA HIDENORI (JP)
MORIYAMA TAKANORI (JP)
Application Number:
PCT/JP2021/015250
Publication Date:
October 21, 2021
Filing Date:
April 13, 2021
Export Citation:
Assignee:
SHOEI CHEMICAL IND CO (JP)
International Classes:
B03B1/04; B07B7/08; B22F1/00; C01B33/18
Domestic Patent References:
| WO2012169628A1 | 2012-12-13 | |||
| WO2010106716A1 | 2010-09-23 | |||
| WO2012124453A1 | 2012-09-20 | |||
| WO2019146411A1 | 2019-08-01 | |||
| WO2019146412A1 | 2019-08-01 |
Foreign References:
| JP2011100573A | 2011-05-19 | |||
| JP2013512775A | 2013-04-18 | |||
| JP2004225122A | 2004-08-12 |
Attorney, Agent or Firm:
ASAHI, Kazuo et al. (JP)
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