Title:
METHOD AND APPARATUS FOR PRODUCING FINE PARTICLES
Document Type and Number:
WIPO Patent Application WO2004076050
Kind Code:
A3
Abstract:
The present invention provides a method and apparatus for producing fine particles. According to the production method, a molten material 1 which has been formed by melting a raw material to be formed into fine particles is supplied in the form of droplets 1a or a jet flow to a liquid coolant 3, and a vapor film formed so as to cover the molten material supplied to the liquid coolant 3 is forcedly broken to promote vapor explosion, thereby forming and cooling fine particles for solidification. The production method and apparatus can readily produce fine particles from a raw material having a high melting point, and can relatively readily produce submicron fine particles; such particles are difficult to produce by mean of the previously developed technique. The method and apparatus can produce amorphous fine particles, or polycrystalline fine particles having a target particle size by regulating conditions for fine particle formation and for cooling-solidification.
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Inventors:
FURUYA MASAHIRO (JP)
Application Number:
PCT/JP2004/002501
Publication Date:
December 09, 2004
Filing Date:
March 01, 2004
Export Citation:
Assignee:
CENTRAL RES INST ELECT (JP)
FURUYA MASAHIRO (JP)
FURUYA MASAHIRO (JP)
International Classes:
B01J2/06; B22F9/08; C04B35/626; B01J; (IPC1-7): B22F9/08
Foreign References:
| US3951577A | 1976-04-20 | |||
| EP0131969A2 | 1985-01-23 | |||
| US4298553A | 1981-11-03 | |||
| EP1256633A2 | 2002-11-13 | |||
| US20020064572A1 | 2002-05-30 | |||
| EP1182270A1 | 2002-02-27 | |||
| DE952586C | 1956-11-15 |
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